Illinois State Water Survey - University of Illinois at Urbana-Champaign

State Climatologist Office for Illinois

Near Record Wet October in Illinois

Cold, Wet October

The state-wide precipitation for October was 8.90 inches. This is 6.0 inches above normal. Based on preliminary data, this is the second wettest October on record. The wettest October was 1941 with 9.23 inches.

Rainfall was heaviest in southern Illinois with many places reporting 8 to 12 inches for the month. A few standout reports were recording record-setting amounts of 13.98 inches at Jerseyville, 13.63 inches at Mt. Olive, and 13.31 inches at Riverton. Decatur and Bloomington/Normal set their all-time records with 10.09 and 10.18 inches respectively.

While not record setting, the following locations reported an exceptionally wet October. Rockford reported their fifth wettest October on record with 5.94 inches, while Chicago reported their ninth wettest with 6.04 inches. Champaign, Peoria, and Springfield reported their second wettest October on record with 8.79, 7.95, and 11.32 inches, respectively. Carbondale reported its third wettest with 10.01 inches.

October was a gloomy month, especially in northern Illinois. Chicago reported two sunny days, and Rockford only one. Downstate was a little better with eight sunny days reported in Peoria and Champaign, nine in Springfield, and 14 in Carbondale.

Statewide temperatures for October have been 4.8 degrees below normal, making this the seventh coldest October (based on records going back to 1895).

Below are maps of the precipitation as well as tables with the October rainfall rankings and reports of individual stations.

Table 1. Top Ten Wettest Octobers since 1895.
Rank Amount Year
1 9.23 1941
2 8.90 2009
3 6.87 1919
4 6.04 2001
5 5.96 1991
6 5.90 1969
7 5.14 1954
8 5.05 1967
9 5.04 1949
10 4.91 2004
Stations that set or almost set their October rainfall record Illinois Rainfall in October Illinois Rainfall in October, departure from normal Illinois Rainfall in October, percent of normal Illinois Rainfall in October, estimate from radar

Radar-estimated precipitation for October from the NWS. Note the large areas of red, which means at least 5 inches of rain. The heaviest amounts of over 10 inches were in southeastern Illinois, especially around St. Louis.


                     State: Illinois   Climate Division: 1
                         From 10/01/2009 To 10/31/2009

Station                                    Percent                      Percent
 ID                          Precipitation  Avail  <--- Temperature ----> Avail
Number Name                      Obs   Dev  Data   High   Low  Mean   Dev  Data
-------------------------------------------------------------------------------
110072 ALEDO                     5.55  2.70   87   55.0  39.0  47.0  -6.6   87
110146 AMBOY                     5.94  3.12   97     na    na    na    na   00
110211 APPLE_RIVER_CANYON_ST_PK  6.56  3.85   48     na    na    na    na   00
112745 ELIZABETH                 7.73  4.99  100   54.6  37.7  46.2  -4.5  100
113262 FREEPORT_WASTE_WTR_PL     5.98  3.24  100   54.6  38.2  46.4  -4.3  100
113312 GALENA                    6.11  3.42   58     na    na    na    na   00
114710 KEWANEE_1_E               6.07  3.19  100   55.2  38.9  47.0  -5.8  100
115751 MOLINE_WSO_AP             5.89  3.06  100   56.4  40.8  48.6  -4.2  100
115901 MOUNT_CARROLL             7.23  4.38   97   55.9  39.1  47.5  -3.5   97
116490 OREGON_3_SW               5.72  2.92   52     na    na    na    na   00
116661 PAW_PAW_2_NW              4.90  2.11  100   54.2  37.5  45.9  -6.0  100
117354 ROCHELLE                  5.89  3.12  100   54.6  38.8  46.7  -4.6  100
117382 ROCKFORD_AIRPORT          5.88  3.17  100   54.6  39.8  47.2  -3.7  100
117470 ROSCOE_2_SE               6.42  3.77  100     na    na    na    na   00
118254 STEWARD_3S                6.02  3.24  100     na    na    na    na   00


                     State: Illinois   Climate Division: 2
                         From 10/01/2009 To 10/31/2009

Station                                    Percent                      Percent
 ID                          Precipitation  Avail  <--- Temperature ----> Avail
Number Name                      Obs   Dev  Data   High   Low  Mean   Dev  Data
-------------------------------------------------------------------------------
110442 BARRINGTON_3SW            6.21  3.49   97   53.5  40.2  46.8  -4.9   97
110583 BELVIDERE                 6.62  3.91  100     na    na    na    na   00
111420 CHANNAHON_DRESDEN_ISLAND  7.19  4.27  100   57.0  41.0  49.0  -3.7  100
111497 CHICAGO_BOTANICAL_GARDEN  7.42  4.64  100   56.9  40.7  48.8  -3.2  100
111549 CHICAGO_OHARE_AP          5.96  3.19  100   55.2  42.5  48.9  -3.3  100
111577 CHICAGO_MIDWAY_AP_3SW     7.69  4.81  100   56.1  42.5  49.3  -3.2  100
112223 DE_KALB                   6.32  3.54   94   54.6  39.7  47.1  -4.4   94
112510 EARLVILLE_3_S             6.95  4.10  100     na    na    na    na   00
112709 ELBURN                    5.39  2.60  100     na    na    na    na   00
112736 ELGIN                     5.85  3.11  100   55.4  39.1  47.3  -4.5  100
113392 GENOA_2_SW                6.02  3.27   90     na    na    na    na   00
113490 GLEN_ELLYN_4_S            7.12  4.33  100     na    na    na    na   00
113902 HARVARD                   6.43  3.76  100     na    na    na    na   00
114530 JOLIET_BRANDON_RD_DAM     7.20  4.30   94   55.9  41.0  48.4  -4.2   94
114816 LA_GRANGE                 8.55  5.71  100     na    na    na    na   00
114890 LANSING                   8.77  5.80   90     na    na    na    na   00
115313 MANHATTAN_4_SW            8.01  5.06  100     na    na    na    na   00
115326 MARENGO                   6.71  4.01  100   54.7  38.5  46.6  -4.4  100
115372 MARSEILLES_LOCK           6.88  3.98  100   55.7  40.7  48.2  -4.6  100
115493 MCHENRY_WG_STRATTON_L&D   6.76  4.08  100   54.3  37.6  45.9  -5.4  100
115562 MENDOTA__2_SE             6.47  3.61  100     na    na    na    na   00
115763 MONEE_RESERVOIR           8.94  5.98   87     na    na    na    na   00
115825 MORRIS_1_NW               7.73  4.81  100   56.6  41.3  49.0  -3.8  100
115961 MUNDELEIN_4_WSW           6.10  3.41  100   54.2  39.2  46.7  -4.8  100
116065 NEWARK_2_SSE              7.02  4.15  100     na    na    na    na   00
116281 OAK_BROOK_2W              7.58  4.78  100     na    na    na    na   00
116526 OTTAWA_5SW                6.73  3.84  100   56.0  41.6  48.8  -3.9  100
116616 PARK_FOREST               8.88  5.93  100   56.3  41.4  48.9  -3.9  100
116753 PERU                      6.43  3.55   97   56.2  40.4  48.3  -4.4   97
116849 PLAINFIELD_3_NE           7.26  4.41   97     na    na    na    na   00
116855 PLANO                     6.34  3.50  100     na    na    na    na   00
117457 ROMEOVILLE_WFO            8.32  5.45  100   55.8  41.8  48.8  -3.8  100
117586 ST_CHARLES_7_NW           6.01  3.25  100     na    na    na    na   00
117833 SHABBONA_3S               6.67  3.85   94     na    na    na    na   00
118192 SPRING_GROVE              6.97  4.32  100     na    na    na    na   00
119221 WHEATON_3_SE              7.43  4.63  100   53.8  38.1  46.0  -6.4  100
119480 WOODSTOCK_5_NW            6.56  3.88  100     na    na    na    na   00
119827 YORKVILLE_3_SW            7.07  4.22  100     na    na    na    na   00

                     State: Illinois   Climate Division: 3
                         From 10/01/2009 To 10/31/2009

Station                                    Percent                      Percent
 ID                          Precipitation  Avail  <--- Temperature ----> Avail
Number Name                      Obs   Dev  Data   High   Low  Mean   Dev  Data
-------------------------------------------------------------------------------
110140 ALTONA                    7.82  4.91  100   55.4  38.7  47.0  -6.1  100
110330 AUGUSTA                   8.15  5.08   48     na    na    na    na   00
110598 BENTLEY                   7.12  4.05  100   58.1  39.7  48.9  -5.9  100
112125 DAHINDA_1_NE              6.54  3.61  100     na    na    na    na   00
113320 GALESBURG                 6.31  3.38  100   55.1  39.2  47.1  -6.4  100
114780 KNOXVILLE                 5.70  2.77   94   55.6  40.0  47.8  -5.7   97
115038 LEWISTOWN                 8.72  5.76   87     na    na    na    na   00
115334 MARIETTA                  7.54  4.56  100     na    na    na    na   00
115772 MONMOUTH_4NW              4.64  1.71   94   55.5  38.4  47.0  -6.8   94
116670 PAYSON                    8.55  5.43   52     na    na    na    na   00
116970 PRAIRIE_CITY_2S           6.67  3.70  100   58.8  41.2  50.0  -4.1  100
117072 QUINCY_REGIONAL_AP        6.76  3.63  100   56.6  42.2  49.4  -6.0  100
117077 QUINCY_DAM_21             7.84  4.69   94     na    na    na    na   00
117551 RUSHVILLE                 8.83  5.80   97   57.4  41.0  49.2  -5.8  100
118204 ST_DAVID                  9.87  6.92  100     na    na    na    na   00

                     State: Illinois   Climate Division: 4
                         From 10/01/2009 To 10/31/2009

Station                                    Percent                      Percent
 ID                          Precipitation  Avail  <--- Temperature ----> Avail
Number Name                      Obs   Dev  Data   High   Low  Mean   Dev  Data
-------------------------------------------------------------------------------
110305 ATHENS_2_N                9.77  6.80   97     na    na    na    na   00
110306 ATHENS_2SW                7.74  4.78   94   57.0  41.6  49.3  -5.8   94
110761 BLOOMINGTON_WATERWORKS   10.38  7.47   97     na    na    na    na   00
110764 BLOOMINGTON_5W           10.32  7.40  100   55.5  40.9  48.2  -5.9  100
110868 BRADFORD_3SSE             6.07  3.17  100     na    na    na    na   00
111083 BUFFALO                  10.28  7.31  100     na    na    na    na   00
111236 CAMP_GROVE_2_SW           5.86  2.95  100     na    na    na    na   00
111475 CHENOA                    9.93  7.05  100   56.8  42.3  49.5  -4.0  100
111627 CHILLICOTHE               6.30  3.40   84     na    na    na    na   00
111743 CLINTON_1_SSW            10.48  7.50   94     na    na    na    na   00
111836 CONGERVILLE_2_NW          8.21  5.31  100   58.3  40.5  49.4  -4.4  100
112193 DECATUR                  10.09  7.09  100   59.5  42.4  51.0  -4.3  100
112854 EUREKA                    8.34  5.45   97     na    na    na    na   00
112993 FARMER_CITY              10.19  7.24  100     na    na    na    na   00
113940 HAVANA_4_NNE              9.66  6.71   97     na    na    na    na   00
115079 LINCOLN                  10.94  7.97  100   57.5  41.4  49.5  -5.3  100
115272 MACKINAW_1N               7.53  4.62   97     na    na    na    na   00
115413 MASON_CITY                8.57  5.62  100   57.0  41.1  49.1  -5.6  100
115712 MINONK                    7.33  4.45  100   57.2  40.3  48.7  -4.7  100
115876 MORTON                    8.92  6.01  100     na    na    na    na   00
115927 MOUNT_PULASKI             9.25  6.26  100     na    na    na    na   00
116200 NORMAL_4NE               10.18  7.28  100   56.8  40.1  48.4  -5.6  100
116703 PEORIA_AIRPORT_3SW        8.41  5.49  100     na    na    na    na   00
116711 PEORIA_GTR_PEORIA_RGNL_A  7.89  4.97  100   56.3  42.4  49.4  -4.3  100
116760 PETERSBURG_3_SSW          6.60  3.64  100     na    na    na    na   00
116765 PETERSBURG_2SW            8.73  5.77   42     na    na    na    na   00
117004 PRINCEVILLE_2W            6.30  3.38   97   56.4  39.6  48.0  -5.3   97
117329 ROANOKE                   7.44  4.55  100     na    na    na    na   00
117590 SAYBROOK_2N               9.10  6.19  100   56.7  40.3  48.5  -5.5  100
118222 STANFORD_2S               9.84  6.91  100     na    na    na    na   00

                     State: Illinois   Climate Division: 5
                         From 10/01/2009 To 10/31/2009

Station                                    Percent                      Percent
 ID                          Precipitation  Avail  <--- Temperature ----> Avail
Number Name                      Obs   Dev  Data   High   Low  Mean   Dev  Data
-------------------------------------------------------------------------------
110803 BOURBONNAIS_3NW           9.01  6.07  100     na    na    na    na   00
111447 CHATSWORTH                8.14  5.25  100     na    na    na    na   00
111655 CISCO                    10.18  7.19  100     na    na    na    na   00
112140 DANVILLE                  7.75  4.84  100   58.7  42.7  50.7  -3.4  100
112145 DANVILLE_SEWAGE_PLANT     7.08  4.17  100   60.1  44.6  52.4  -1.8  100
112500 DWIGHT                    7.33  4.42   90   56.1  40.1  48.1  -5.0   90
112923 FAIRBURY__WWTP            8.34  5.45   61     na    na    na    na   00
113061 FISHER                    8.95  6.02  100   58.0  40.5  49.3  -4.9  100
113774 HAMMOND                   9.66  6.67   58     na    na    na    na   00
114198 HOOPESTON_1_NE            7.08  4.19  100   58.1  42.9  50.5  -3.1  100
115646 MILFORD_5_NW              7.38  4.50  100     na    na    na    na   00
116344 OGDEN                     7.58  4.65  100   57.2  42.9  50.0  -4.4  100
116663 PAXTON_2_WSW              7.24  4.33   90   56.9  38.2  47.6  -6.3   84
116769 PHILO                     7.79  4.83  100     na    na    na    na   00
116910 PONTIAC                   8.22  5.33  100   57.9  42.5  50.2  -3.1  100
117150 RANTOUL                   8.40  5.48  100   59.7  41.9  50.8  -3.3  100
117952 SIDELL_5NW                7.35  4.41  100   58.9  40.6  49.8  -4.8  100
118194 ST_ANNE                   7.76  4.83   97     na    na    na    na   00
118353 STREATOR_3_SE             6.92  4.03  100     na    na    na    na   00
118632 TOULON_2_SSE              6.30  3.38  100     na    na    na    na   00
118740 URBANA                    8.79  5.84  100   58.0  41.5  49.8  -4.8  100
118745 URBANA_S_AGRONOMY_FARM    8.69  5.74  100   58.4  44.5  51.5  -3.1  100
119021 WATSEKA_2_NW              7.69  4.79   94   57.5  40.2  48.8  -4.4   94

                     State: Illinois   Climate Division: 6
                         From 10/01/2009 To 10/31/2009

Station                                    Percent                      Percent
 ID                          Precipitation  Avail  <--- Temperature ----> Avail
Number Name                      Obs   Dev  Data   High   Low  Mean   Dev  Data
-------------------------------------------------------------------------------
110137 ALTON_MELVIN_PRICE_L&D    9.46  6.52  100   62.4  45.8  54.1  -2.8  100
110492 BEARDSTOWN                9.98  6.96  100     na    na    na    na   00
111280 CARLINVILLE              10.26  7.41   97   58.4  41.3  49.8  -6.2   97
112679 EDWARDSVILLE_2_W         12.46  9.54   94     na    na    na    na   00
113666 GREENFIELD               10.71  7.86   77     na    na    na    na   00
114089 HIGHLAND                 11.86  8.89  100     na    na    na    na   00
114442 JACKSONVILLE_2E          10.14  7.20   87   60.6  41.0  50.8  -4.7   87
114447 JACKSONVILLE_2           11.64  8.71  100   58.9  41.8  50.3  -5.1  100
114489 JERSEYVILLE_2_SW         13.98 11.06   97   59.4  41.7  50.6  -5.7   97
114739 KINCAID                  10.78  7.84  100     na    na    na    na   00
114833 LAKE_SPRINGFIELD          9.25  6.31  100     na    na    na    na   00
115113 LOAMI_3_SSW              11.30  8.41   55     na    na    na    na   00
115841 MORRISONVILLE            10.30  7.39  100   60.2  42.5  51.3  -4.5  100
115917 MOUNT_OLIVE_1_E          13.63 10.72  100     na    na    na    na   00
116185 NOKOMIS                   9.30  6.37   81     na    na    na    na   00
116738 PERRY_6_NW                7.86  4.81   84   58.7  41.7  50.2  -5.2   84
116837 PITTSFIELD_NO_2           7.01  4.00   81   58.0  40.6  49.3  -6.3   81
117318 RIVERTON_4NNE            13.31 10.34   52     na    na    na    na   00
117896 SHERMAN_1ESE             11.12  8.16   97     na    na    na    na   00
118179 SPRINGFIELD_CAPITAL_AP   11.28  8.33  100   59.5  43.3  51.4  -3.9  100
118186 SPRINGFIELD_#2           10.97  8.02  100   58.5  42.8  50.7  -4.6  100
118491 TAYLORVILLE_2SW           8.24  5.30   94     na    na    na    na   00
118860 VIRDEN                    9.30  6.42   42     na    na    na    na   00
118870 VIRGINIA                 10.23  7.26  100     na    na    na    na   00
119241 WHITE_HALL_1_E           10.92  8.02  100   58.4  41.1  49.8  -6.0  100
119331 WINCHESTER                6.23  3.28   74   60.5  40.6  50.6  -5.0   77

                     State: Illinois   Climate Division: 7
                         From 10/01/2009 To 10/31/2009

Station                                    Percent                      Percent
 ID                          Precipitation  Avail  <--- Temperature ----> Avail
Number Name                      Obs   Dev  Data   High   Low  Mean   Dev  Data
-------------------------------------------------------------------------------
110500 BEECHER_CITY              9.72  6.71  100     na    na    na    na   00
111329 CASEY                     7.43  4.36   94     na    na    na    na   00
111436 CHARLESTON                7.38  4.35  100   60.6  42.9  51.8  -3.8  100
111691 CLAREMONT_6N              8.73  5.62  100     na    na    na    na   00
111700 CLAY_CITY_6_SSE           8.86  5.76  100     na    na    na    na   00
112685 EFFINGHAM_SE             11.05  8.01   97     na    na    na    na   00
112687 EFFINGHAM                10.99  7.96  100   60.9  41.9  51.4  -4.7  100
113106 FLORA                     8.12  5.02   97   61.4  41.9  51.7  -5.1   97
113109 FLORA_5_NW                9.50  6.42  100   61.8  43.3  52.5  -4.1   90
114078 HIDALGO_3SW               8.96  5.89  100   62.0  43.4  52.7  -3.3  100
114317 HUTSONVILLE_POWER_PLANT   8.74  5.65  100   62.4  42.9  52.6  -3.1  100
114400 IUKA_12_SW               10.58  7.52  100   60.9  42.2  51.5  -5.3  100
114957 LAWRENCEVILLE             7.65  4.53  100   62.3  43.5  52.9  -3.5  100
115209 LOUISVILLE                7.16  4.08   87     na    na    na    na   00
115219 LOVINGTON                 9.78  6.79  100     na    na    na    na   00
115430 MATTOON                   7.67  4.65  100     na    na    na    na   00
115950 MOWEAQUA_2S               9.10  6.12  100     na    na    na    na   00
116025 NEOGA_4NW                 7.59  4.58  100   61.6  41.0  51.3  -4.5  100
116134 NEWMAN_3W                 8.39  5.41   97     na    na    na    na   00
116157 NEWTON                    8.40  5.32  100   61.1  42.7  51.9  -4.4  100
116446 OLNEY_2S                  8.80  5.68  100   61.4  42.7  52.0  -4.7  100
116558 PALESTINE__2W             7.78  4.68  100   61.2  43.9  52.6  -3.4  100
116579 PANA_3_E                 10.11  7.14  100   60.6  43.2  51.9  -3.9   97
116610 PARIS_WATERWORKS          6.03  3.03  100   58.9  41.9  50.4  -4.6  100
117126 RAMSEY                   12.01  9.03  100   60.7  42.0  51.3  -4.7  100
117345 ROBINSON                  8.13  5.03  100   60.6  41.7  51.2  -4.9  100
117603 STE_MARIE                 8.37  5.27   58     na    na    na    na   00
117636 SALEM                     9.91  6.84  100   61.0  43.1  52.0  -4.7  100
117876 SHELBYVILLE_DAM           7.97  4.98   97   59.8  42.8  51.3  -4.4   97
118389 SULLIVAN_3_S              9.04  6.04  100   58.9  41.7  50.3  -5.1  100
118684 TUSCOLA                   7.45  4.46  100   59.0  42.3  50.7  -4.4  100
118781 VANDALIA                  8.21  5.20   97   60.1  42.1  51.1  -5.2   97
119354 WINDSOR                   3.84  0.84   55     na    na    na    na   00

                     State: Illinois   Climate Division: 8
                         From 10/01/2009 To 10/31/2009

Station                                    Percent                      Percent
 ID                          Precipitation  Avail  <--- Temperature ----> Avail
Number Name                      Obs   Dev  Data   High   Low  Mean   Dev  Data
-------------------------------------------------------------------------------
110050 ALBERS_1_W                9.46  6.46  100     na    na    na    na   00
110510 BELLEVILLE_SIU_RESEARCH   7.79  4.80   87   64.4  44.3  54.3  -2.8   87
111166 CAIRO_3_N                 9.93  6.52   97   64.8  45.9  55.4  -3.4   97
111265 CARBONDALE_SEWAGE_PLANT  10.01  6.86  100   63.9  43.5  53.7  -4.0  100
111290 CARLYLE_RESERVOIR         8.83  5.81  100   60.6  42.5  51.6  -5.3  100
111386 CENTRALIA                10.80  7.75   94     na    na    na    na   00
111491 CHESTER                  10.60  7.49   87     na    na    na    na   00
113580 GRAND_CHAIN_DAM_53       10.31  6.96   94   63.5  46.9  55.2  -3.5   94
114629 KASKASKIA_RIV_NAV_LOCK   11.17  8.08  100   63.1  43.5  53.3  -4.0  100
115983 MURPHYSBORO_2_SW         11.25  8.10   90     na    na    na    na   00
116011 NASHVILLE_4_NE           11.86  8.82  100   61.0  43.3  52.1  -4.9  100
116072 NEW_ATHENS               10.25  7.23   97     na    na    na    na   00
116973 PRAIRIE_DUROCHER         10.68  7.59   61     na    na    na    na   00
117157 RED_BUD_5_SE             11.84  8.79   45     na    na    na    na   00
118248 STEELEVILLE               8.45  5.37   26     na    na    na    na   00
119002 WATERLOO                 12.19  9.15  100   61.0  41.3  51.2  -6.0   97

                     State: Illinois   Climate Division: 9
                         From 10/01/2009 To 10/31/2009

Station                                    Percent                      Percent
 ID                          Precipitation  Avail  <--- Temperature ----> Avail
Number Name                      Obs   Dev  Data   High   Low  Mean   Dev  Data
-------------------------------------------------------------------------------
110993 BROOKPORT_DAM_52          9.39  6.06   90   63.6  45.8  54.7  -4.2   90
112931 FAIRFIELD_RADIO_WFIW      8.22  5.16  100   61.6  43.4  52.5  -4.6  100
113612 GRAYVILLE                 8.65  5.62  100   63.4  44.0  53.7  -3.6  100
115943 MT_VERNON_3_NE            9.63  6.57   97   60.9  46.7  53.8  -3.2   97
116874 PLUMFIELD                 9.54  6.45   45     na    na    na    na   00
118020 SMITHLAND_LOCK_&_DAM     10.04  6.76  100   62.5  45.0  53.8  -5.0  100
118932 WALTONVILLE               9.57  6.51   42     na    na    na    na   00

Normals used for the deviations are from a grid and should only be considered
as an approximation for a particular station

		
		

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