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 |
Copyright 2007 Illinois State Water Survey
Last Modified: September 11, 2007