Historical Climate Data

Precipitation Summary

Station: 116819 PIPER CITY, IL

1971-2000 NCDC Normals

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Prec. (in) 1.91 1.80 2.77 3.35 4.04 3.83 4.22 3.81 2.91 2.58 3.08 2.53 36.83

Precipitation Extremes

Period of Record: 1940-2006


Month
High (in)
Year
Low (in)
Year 		1-Day
Max (in)
Date
Jan 8.51 2005 0.05 1986 2.82 01-13-2005
Feb 6.39 1990 0.02 1994 2.55 02-14-1990
Mar 4.91 1998 0.15 1986 2.11 03-27-1985
Apr 7.83 1944 0.60 1971 2.83 04-17-2006
May 9.83 1996 1.15 2005 5.74 05-31-1945
Jun 9.25 1993 0.06 1988 3.13 06-03-1980
Jul 9.27 2003 1.13 1991 5.81 07-08-1951
Aug 9.05 1977 0.04 1986 4.50 08-31-1989
Sep 7.92 1972 0.04 1979 3.04 09-14-1972
Oct 8.09 2001 0.51 1971 2.43 10-16-1993
Nov 8.52 1985 0.42 1999 2.05 11-18-2003
Dec 6.17 1971 0.13 1976 3.72 12-29-1990
             
Annual 55.76 1993 24.00 1988 5.81 07-08-1951
Winter 14.76 2005 1.90 1970 3.72 12-29-1990
Spring 18.78 1970 3.13 1986 5.74 05-31-1945
Summer 21.09 1993 3.13 1988 5.81 07-08-1951
Fall 16.06 1993 2.79 1979 3.04 09-14-1972

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 9.3 5.2 1.1 0.3
Feb 7.8 3.8 0.9 0.3
Mar 10.4 5.8 1.9 0.7
Apr 11.9 7.2 2.0 0.6
May 12.2 7.7 2.9 1.1
Jun 10.7 7.4 2.7 0.9
Jul 9.2 6.2 2.7 1.4
Aug 9.5 5.8 2.4 1.2
Sep 8.1 5.3 1.9 0.8
Oct 9.4 5.3 1.8 0.5
Nov 9.9 6.2 2.2 0.8
Dec 9.7 5.5 1.7 0.4
         
Annual 118.3 71.3 24.1 9.0
Winter 26.9 14.4 3.7 1.1
Spring 34.4 20.7 6.8 2.4
Summer 29.4 19.4 7.8 3.4
Fall 27.4 16.8 5.8 2.1

Temperature Summary

Station 116819 PIPER CITY, IL

1971-2000 NCDC Normals

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High °F 31.1 36.9 49.3 62.2 74.2 83.5 86.1 84.0 78.1 65.5 49.2 36.2 61.4
Low °F 13.2 17.9 28.1 37.6 48.8 58.9 62.4 59.5 51.2 40.5 30.3 19.5 39.0
Mean °F 22.2 27.4 38.7 49.9 61.5 71.2 74.3 71.8 64.7 53.0 39.8 27.9 50.2
HDD 1330 1053 814 457 190 19 6 22 85 382 758 1152 6268
CDD 0 0 0 4 81 204 293 231 73 9 0 0 895

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

Temperature Extremes

Period of Record: 1968-2006


Month 		High
Mean °F
Year 		Low
Mean °F
Year 		1-Day
Max °F
Date 		1-Day
Min °F
Date
Jan 37.0 2006 8.3 1977 66 01-31-1989 -25 01-20-1985
Feb 38.2 1998 14.7 1979 74 02-26-2000 -20 02-03-1996
Mar 46.4 1973 30.3 1984 86 03-31-1981 -4 03-05-1978
Apr 57.5 1977 44.9 1982 93 04-26-1986 7 04-07-1982
May 70.1 1977 56.2 1997 97 05-29-1991 25 05-03-1971
Jun 76.5 1971 66.5 1982 106 06-25-1988 37 06-11-1972
Jul 78.9 1983 70.7 1971 105 07-15-1988 42 07-05-1972
Aug 78.3 1995 66.2 1992 108 08-16-1988 37 08-27-1986
Sep 71.3 1978 60.5 1993 98 09-01-1984 26 09-23-1995
Oct 61.2 1971 46.4 1988 90 10-01-1971 17 10-24-1981
Nov 49.1 2001 33.0 1976 80 11-03-1987 0 11-26-1977
Dec 37.5 1982 14.7 2000 70 12-02-1982 -23 12-24-1983
                 
Annual 54.1 1998 48.5 1996 108 08-16-1988 -25 01-20-1985
Winter 32.9 2002 17.9 1978 74 02-26-1900 -25 01-20-1985
Spring 57.3 1977 45.7 1984 97 05-29-1991 -4 03-05-1978
Summer 76.5 1983 68.1 1992 108 08-16-1988 37 06-11-1972
Fall 57.3 1971 48.4 1976 98 09-01-1984 0 11-26-1977

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 15.5 29.4 6.1
Feb 0.0 9.8 24.9 3.2
Mar 0.0 2.6 21.3 0.1
Apr 0.2 0.1 8.0 0.0
May 2.5 0.0 0.6 0.0
Jun 7.5 0.0 0.0 0.0
Jul 9.4 0.0 0.0 0.0
Aug 5.6 0.0 0.0 0.0
Sep 2.6 0.0 0.4 0.0
Oct 0.1 0.0 5.6 0.0
Nov 0.0 1.6 17.9 0.0
Dec 0.0 10.0 27.6 2.6
         
Annual 28.1 39.7 135.2 12.1
Winter 0.0 35.3 81.8 11.9
Spring 2.7 2.7 29.9 0.1
Summer 22.5 0.0 0.0 0.0
Fall 2.7 1.6 23.5 0.0

Snowfall Summary

Station: 116819 PIPER CITY, IL

1971-2000 Averages

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Snow (in) 9.6 6.2 3.2 1.1 0.0 0.0 0.0 0.0 0.0 0.2 2.0 6.5 28.8

Snowfall Extremes

Period of Record: 1940-2006

Month High (in) Year 1-Day Max (in) Date
Jan 26.6 1979 10.0 01-09-1987
Feb 17.4 1986 9.0 02-28-1984
Mar 13.0 1998 7.0 03-09-1999
Apr 10.7 1982 7.0 04-06-1982
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 7.3 1980 5.8 11-27-1975
Dec 22.9 2000 6.7 12-20-1973
Season (Jul-Jun) 68.4 1981-1982 10.0 01-09-1987

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 4.1 2.2 1.1 0.2
Feb 4.1 2.2 1.1 0.2
Mar 2.5 1.0 0.5 0.1
Apr 0.6 0.3 0.2 0.1
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 0.2 0.1 0.0 0.0
Nov 1.5 0.7 0.4 0.1
Dec 4.5 2.3 1.3 0.2
Annual 19.6 10.1 5.5 1.0

Growing Season Summary

Station: 116819 PIPER CITY, 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 8 24 122 338 691 953 1076 999 759 432 130 24 5556
45 2 7 67 218 538 803 921 844 610 294 71 11 4388
50 0 2 32 125 390 653 767 689 463 180 33 5 3342
55 0 0 13 63 256 503 612 534 323 97 13 1 2419
60 0 0 4 27 148 357 458 380 200 43 3 0 1625
50** 5 15 82 215 433 629 726 669 490 269 75 14 3625

**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 4/27 4/05 4/16 5/10 5/17 10/11 9/23 9/24 10/24 11/03
30 4/21 3/27 4/06 5/07 5/08 10/15 9/23 9/25 11/02 11/16
28 4/11 3/23 3/26 5/05 5/08 10/24 9/22 10/07 11/17 11/30
24 4/06 3/14 3/17 4/17 4/29 11/04 10/13 10/20 11/24 11/30
20 3/23 2/17 3/12 4/10 4/19 11/15 10/13 11/03 12/04 12/12
16 3/13 2/13 2/24 4/05 4/09 11/26 11/02 11/11 12/11 12/22

Length of Growing Season (Days)

Derived from 1971-2000 Averages

Temp °F Median Shortest 10% 90% Longest
32 165 136 140 186 200
30 177 138 153 201 221
28 195 148 172 220 228
24 214 189 196 239 255
20 234 207 215 268 275
16 258 218 231 284 286

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