Historical Climate Data

Precipitation Summary

Station: 116610 PARIS WATERWORKS, IL

1971-2000 NCDC Normals

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Prec. (in) 2.23 2.23 3.27 3.96 4.31 4.24 4.43 4.42 2.94 2.78 3.68 3.10 41.59

Precipitation Extremes

Period of Record: 1893-2006


Month
High (in)
Year
Low (in)
Year 		1-Day
Max (in)
Date
Jan 9.74 1950 0.00 1920 3.00 01-18-1949
Feb 5.60 1951 0.03 1947 2.73 02-27-1997
Mar 9.62 1922 0.23 1910 4.60 03-14-1922
Apr 9.93 1922 0.32 1971 3.80 04-14-1922
May 13.50 1943 0.74 1987 4.20 05-02-1935
Jun 17.65 1957 0.36 1936 10.20 06-28-1957
Jul 10.89 1958 0.56 1974 3.98 07-28-1979
Aug 8.24 1993 0.38 1893 3.46 08-17-1993
Sep 11.43 1911 0.14 1979 6.75 09-15-1931
Oct 10.05 2001 0.20 1908 3.95 10-11-1949
Nov 10.46 1985 0.13 1917 3.70 11-14-1993
Dec 9.09 1967 0.00 1903 3.40 12-21-1967
             
Annual 61.59 1957 23.10 1904 10.20 06-28-1957
Winter 18.58 1950 1.29 1920 3.40 12-21-1967
Spring 22.23 1974 4.50 1932 4.60 03-14-1922
Summer 24.88 1957 4.77 1936 10.20 06-28-1957
Fall 20.79 1993 3.05 1953 6.75 09-15-1931

Precipitation Threshold Climatology

Derived from 1971-2000 Averages:

*Annual/seasonal totals may differ from the sum of the monthly totals due to rounding.


Month 		# Days
Total ≥ 0.01" 		# Days
Total ≥ 0.10" 		# Days
Total ≥ 0.50" 		# Days
Total ≥ 1.00"
Jan 10.4 5.7 1.1 0.2
Feb 9.1 5.0 1.2 0.5
Mar 11.0 7.4 2.6 0.4
Apr 11.9 7.8 2.8 1.0
May 10.7 7.9 3.1 0.9
Jun 9.7 7.2 2.7 1.2
Jul 8.9 6.5 3.0 1.3
Aug 8.2 5.9 3.0 1.4
Sep 7.5 5.1 2.0 0.8
Oct 8.5 5.2 2.0 0.7
Nov 9.7 6.6 2.3 0.8
Dec 11.0 6.2 2.0 0.6
         
Annual 116.6 76.4 28.0 9.8
Winter 30.6 16.9 4.4 1.3
Spring 33.6 23.1 8.5 2.3
Summer 26.8 19.5 8.8 3.9
Fall 25.7 17.0 6.3 2.3

Temperature Summary

Station 116610 PARIS WATERWORKS, IL

1971-2000 NCDC Normals

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High °F 33.6 39.4 51.0 62.9 73.7 82.8 85.9 83.9 77.9 66.0 51.3 38.7 62.3
Low °F 16.4 20.5 30.9 41.3 51.5 61.3 64.7 62.5 54.5 43.4 32.8 22.5 41.9
Mean °F 25.0 30.0 41.0 52.1 62.6 72.1 75.3 73.2 66.2 54.7 42.1 30.6 52.1
HDD 1241 981 746 393 165 13 0 11 71 336 689 1066 5712
CDD 0 0 0 5 90 225 320 265 106 18 0 0 1029

HDD - heating degree days (base 65F); CDD - cooling degree days (base 65F)

Temperature Extremes

Period of Record: 1893-2006


Month 		High
Mean °F
Year 		Low
Mean °F
Year 		1-Day
Max °F
Date 		1-Day
Min °F
Date
Jan 38.2 1933 10.3 1977 71 01-25-1950 -23 01-18-1930
Feb 41.0 1954 17.4 1978 75 02-26-2000 -21 02-13-1905
Mar 55.1 1946 25.8 1960 88 03-22-1907 -8 03-06-1960
Apr 59.1 1925 42.7 1907 92 04-11-1930 17 04-07-1982
May 72.7 1896 56.8 1924 99 05-10-1896 27 05-14-1895
Jun 79.1 1934 65.7 1928 106 06-25-1954 33 06-06-1894
Jul 83.1 1936 72.3 1947 109 07-14-1936 45 07-10-1895
Aug 81.6 1947 67.9 1927 107 08-03-1897 39 08-31-1915
Sep 73.8 1933 57.6 1918 105 09-05-1954 24 09-30-1899
Oct 64.4 1963 46.4 1925 93 10-08-1939 15 10-29-1925
Nov 51.8 1931 33.9 1951 83 11-01-1933 -6 11-25-1950
Dec 42.2 1923 18.5 2000 73 12-02-1982 -22 12-22-1989
                 
Annual 58.7 1893 47.2 1907 109 07-14-1936 -23 01-18-1930
Winter 39.3 1932 20.7 1978 75 02-26-1900 -23 01-18-1930
Spring 58.9 1977 47.1 1960 99 05-10-1996 -8 03-06-1960
Summer 79.2 1936 69.6 1927 109 07-14-1936 33 06-06-1994
Fall 61.0 1931 49.0 1976 105 09-05-1954 -6 11-25-1950

Temperature Threshold Climatology

Derived from 1971-2000 Averages:

*Annual/seasonal values may differ from the sum of the monthly values due to rounding.


Month 		# Days
High ≥ 90°F 		# Days
High ≤ 32°F 		# Days
Low ≤ 32°F 		# Days
Low ≤ 0°F
Jan 0.0 13.6 27.2 4.0
Feb 0.0 7.9 21.7 2.2
Mar 0.0 1.7 16.0 0.1
Apr 0.0 0.0 4.8 0.0
May 0.9 0.0 0.2 0.0
Jun 5.5 0.0 0.0 0.0
Jul 9.2 0.0 0.0 0.0
Aug 6.1 0.0 0.0 0.0
Sep 2.4 0.0 0.0 0.0
Oct 0.0 0.0 3.1 0.0
Nov 0.0 1.2 13.7 0.0
Dec 0.0 7.8 24.7 1.6
         
Annual 24.1 32.3 112.3 7.9
Winter 0.0 29.2 73.6 7.7
Spring 0.9 1.7 21.3 0.1
Summer 20.8 0.0 0.0 0.0
Fall 2.4 1.2 17.0 0.0

Snowfall Summary

Station: 116610 PARIS WATERWORKS, IL

1971-2000 Averages

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Snow (in) 10.4 6.3 3.7 0.2 0.0 0.0 0.0 0.0 0.0 0.1 1.3 6.5 28.5

Snowfall Extremes

Period of Record: 1893-2006

Month High (in) Year 1-Day Max (in) Date
Jan 31.5 1979 17.0 01-31-1982
Feb 21.0 1908 12.0 02-17-1910
Mar 23.0 1978 9.0 03-08-1978
Apr 4.0 1940 4.0 04-11-1940
May 0.0 - - -
Jun 0.0 - - -
Jul 0.0 - - -
Aug 0.0 - - -
Sep 0.0 - - -
Oct 4.0 1989 3.0 10-19-1989
Nov 11.5 1980 8.0 11-27-1980
Dec 37.5 1973 14.0 12-19-1973
Season (Jul-Jun) 71.5 1977-1978 17.0 01-31-1982

Snowfall Threshold Climatology

Derived from 1971-2000 Averages

*Annual values may differ from the sum of the monthly values due to rounding.


Month 		# Days
Total ≥ 0.1" 		# Days
Total ≥ 1.0" 		# Days
Total ≥ 2.0" 		# Days
Total ≥ 5.0"
Jan 3.5 2.1 1.2 0.3
Feb 3.5 2.1 1.2 0.3
Mar 1.8 1.2 0.7 0.2
Apr 0.3 0.1 0.0 0.0
May 0.0 0.0 0.0 0.0
Jun 0.0 0.0 0.0 0.0
Jul 0.0 0.0 0.0 0.0
Aug 0.0 0.0 0.0 0.0
Sep 0.0 0.0 0.0 0.0
Oct 0.1 0.1 0.0 0.0
Nov 0.8 0.5 0.3 0.1
Dec 3.2 2.0 1.2 0.3
Annual 14.8 9.4 5.5 1.6

Growing Season Summary

Station: 116610 PARIS WATERWORKS, IL

Growing Degree Day Averages

Derived from 1971-2000 Data

Base Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
40 20 48 176 410 746 988 1125 1060 820 495 183 43 6054
45 7 20 103 280 591 838 970 905 670 351 108 20 4815
50 2 7 56 173 439 688 815 750 522 227 56 8 3706
55 0 1 26 94 297 538 660 595 379 130 24 3 2721
60 0 0 9 43 176 391 505 440 248 61 7 0 1863
50** 10 27 103 242 467 669 778 728 533 294 98 21 3932

**Modified Growing Degree Days: Base 50, Ceiling 86.

Growing Season Summary

Derived from 1971-2000 Averages

Date of Last Spring Occurrence Date of First Fall Occurrence
Temp °F Median Early 90% 10% Late Median Early 90% 10% Late
32 4/15 3/25 4/03 5/04 5/12 10/18 9/19 10/03 11/03 11/13
30 4/10 3/20 3/28 4/22 5/03 10/23 10/02 10/08 11/12 11/22
28 4/08 3/14 3/22 4/19 5/03 11/03 10/03 10/10 11/17 11/28
24 3/25 3/07 3/15 4/10 4/11 11/11 10/20 10/28 11/26 12/04
20 3/16 2/22 3/01 4/05 4/09 11/22 11/02 11/07 12/08 12/22
16 3/05 1/30 2/11 3/20 3/27 12/04 11/02 11/10 12/22 1/02

Length of Growing Season (Days)

Derived from 1971-2000 Averages

Temp °F Median Shortest 10% 90% Longest
32 184 150 164 210 215
30 199 163 180 222 229
28 206 177 186 231 255
24 226 207 211 251 261
20 252 213 231 268 284
16 275 237 254 308 311

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Copyright 2007 Illinois State Water Survey
Jim Angel, State Climatologist, jimangel@illinois.edu
Last Modified: September 11, 2007