Precipitation Summary
Station: 118147 SPARTA 1 W, IL
1971-2000 NCDC Normals
Element | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Prec. (in) | 2.43 | 2.53 | 4.06 | 4.10 | 4.51 | 3.75 | 4.19 | 3.31 | 3.08 | 3.26 | 4.21 | 3.31 | 42.74 |
Precipitation Extremes
Period of Record: 1893-2006
Month | High (in) | Year | Low (in) | Year | 1-Day Max (in) |
Date |
---|---|---|---|---|---|---|
Jan | 11.89 | 1916 | 0.14 | 1986 | 4.12 | 01-30-1916 |
Feb | 5.68 | 1950 | 0.22 | 1947 | 3.22 | 02-13-1946 |
Mar | 12.87 | 1945 | 0.03 | 1910 | 5.20 | 03-25-1904 |
Apr | 11.32 | 1994 | 0.53 | 1915 | 5.02 | 04-29-1996 |
May | 12.13 | 1990 | 0.50 | 1914 | 3.80 | 05-07-1956 |
Jun | 10.81 | 1915 | 0.07 | 1991 | 4.53 | 06-11-1938 |
Jul | 13.33 | 1958 | 0.11 | 1918 | 4.11 | 07-28-1979 |
Aug | 13.22 | 1923 | 0.07 | 1909 | 6.29 | 08-05-1923 |
Sep | 8.24 | 1926 | 0.20 | 1985 | 3.13 | 09-18-1988 |
Oct | 15.07 | 1919 | 0.00 | 1992 | 5.00 | 10-12-1893 |
Nov | 11.45 | 1985 | 0.19 | 1949 | 4.16 | 11-19-1985 |
Dec | 10.57 | 1982 | 0.15 | 1955 | 5.35 | 12-21-1967 |
Annual | 62.59 | 1949 | 23.32 | 1953 | 6.29 | 08-05-1923 |
Winter | 19.54 | 1950 | 3.01 | 1931 | 5.35 | 12-21-1967 |
Spring | 24.72 | 1945 | 4.54 | 1930 | 5.20 | 03-25-1904 |
Summer | 24.71 | 1915 | 2.36 | 1930 | 6.29 | 08-05-1923 |
Fall | 20.37 | 1919 | 2.76 | 1953 | 5.00 | 10-12-1893 |
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 | 7.4 | 4.5 | 1.7 | 0.5 |
Feb | 6.7 | 4.7 | 1.9 | 0.5 |
Mar | 10.9 | 7.2 | 3.0 | 1.1 |
Apr | 10.1 | 6.9 | 2.9 | 1.0 |
May | 10.2 | 7.0 | 2.8 | 1.2 |
Jun | 9.2 | 6.5 | 2.6 | 1.3 |
Jul | 8.1 | 5.9 | 2.6 | 1.2 |
Aug | 7.4 | 5.3 | 2.3 | 0.9 |
Sep | 7.2 | 4.5 | 1.8 | 0.9 |
Oct | 7.7 | 5.3 | 2.4 | 1.0 |
Nov | 8.8 | 6.4 | 2.9 | 1.5 |
Dec | 8.2 | 5.7 | 2.4 | 0.8 |
Annual | 102.0 | 70.1 | 29.5 | 12.0 |
Winter | 22.3 | 14.9 | 6.0 | 1.8 |
Spring | 31.3 | 21.1 | 8.8 | 3.4 |
Summer | 24.7 | 17.7 | 7.5 | 3.4 |
Fall | 23.8 | 16.2 | 7.2 | 3.3 |
Temperature Summary
Station 118147 SPARTA 1 W, IL
1971-2000 NCDC Normals
Element | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
High °F | 37.8 | 44.2 | 54.8 | 65.5 | 75.3 | 84.1 | 88.3 | 86.9 | 79.6 | 69.2 | 54.4 | 42.4 | 65.2 |
Low °F | 20.3 | 24.5 | 33.2 | 43.1 | 52.7 | 62.3 | 66.7 | 64.4 | 55.9 | 44.7 | 34.9 | 25.3 | 44.0 |
Mean °F | 29.1 | 34.4 | 44.0 | 54.3 | 64.0 | 73.2 | 77.5 | 75.7 | 67.8 | 57.0 | 44.7 | 33.9 | 54.6 |
HDD | 1113 | 859 | 651 | 330 | 128 | 7 | 0 | 6 | 56 | 270 | 610 | 967 | 4997 |
CDD | 0 | 0 | 0 | 10 | 97 | 253 | 387 | 336 | 138 | 21 | 0 | 0 | 1242 |
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 | 43.5 | 1933 | 17.6 | 1977 | 77 | 01-19-1907 | -20 | 01-13-1912 |
Feb | 45.8 | 1954 | 22.1 | 1899 | 82 | 02-10-1932 | -23 | 02-12-1899 |
Mar | 57.5 | 1946 | 32.2 | 1960 | 90 | 03-23-1910 | -6 | 03-05-1960 |
Apr | 64.3 | 1954 | 47.9 | 1907 | 94 | 04-11-1930 | 20 | 04-21-1904 |
May | 74.3 | 1962 | 59.2 | 1997 | 99 | 05-30-1934 | 28 | 05-01-1903 |
Jun | 82.7 | 1952 | 68.0 | 1903 | 107 | 06-29-1931 | 40 | 06-16-1917 |
Jul | 86.2 | 1934 | 73.5 | 1996 | 114 | 07-24-1934 | 48 | 07-04-1968 |
Aug | 85.4 | 1936 | 69.7 | 2004 | 112 | 08-09-1930 | 41 | 08-15-1994 |
Sep | 78.3 | 1933 | 62.3 | 1918 | 105 | 09-05-1899 | 22 | 09-30-1899 |
Oct | 68.3 | 1963 | 51.5 | 1925 | 96 | 10-02-1953 | 20 | 10-30-1895 |
Nov | 56.4 | 1909 | 37.3 | 1996 | 85 | 11-04-1924 | -4 | 11-30-1929 |
Dec | 46.1 | 1923 | 21.2 | 2000 | 76 | 12-03-1970 | -17 | 12-20-1901 |
Annual | 61.2 | 1975 | 52.4 | 2003 | 114 | 07-24-1934 | -23 | 02-12-1999 |
Winter | 44.1 | 1932 | 26.3 | 1978 | 82 | 02-10-1932 | -23 | 02-12-1999 |
Spring | 62.0 | 1977 | 51.3 | 1996 | 99 | 05-30-1934 | -6 | 03-05-1960 |
Summer | 83.0 | 1936 | 71.2 | 2004 | 114 | 07-24-1934 | 40 | 06-16-1917 |
Fall | 65.2 | 1931 | 52.6 | 1996 | 105 | 09-05-1999 | -4 | 11-30-1929 |
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 | 9.7 | 25.7 | 1.6 |
Feb | 0.0 | 4.6 | 18.8 | 0.5 |
Mar | 0.0 | 0.7 | 13.0 | 0.1 |
Apr | 0.2 | 0.0 | 3.3 | 0.0 |
May | 1.7 | 0.0 | 0.1 | 0.0 |
Jun | 8.9 | 0.0 | 0.0 | 0.0 |
Jul | 16.3 | 0.0 | 0.0 | 0.0 |
Aug | 11.9 | 0.0 | 0.0 | 0.0 |
Sep | 4.5 | 0.0 | 0.1 | 0.0 |
Oct | 0.1 | 0.0 | 2.7 | 0.0 |
Nov | 0.0 | 0.5 | 11.6 | 0.0 |
Dec | 0.0 | 4.9 | 21.9 | 0.8 |
Annual | 43.5 | 20.3 | 97.0 | 2.9 |
Winter | 0.0 | 19.2 | 66.3 | 2.9 |
Spring | 1.9 | 0.7 | 16.4 | 0.1 |
Summer | 37.2 | 0.0 | 0.0 | 0.0 |
Fall | 4.5 | 0.5 | 14.7 | 0.0 |
Snowfall Summary
Station: 118147 SPARTA 1 W, IL
1971-2000 Averages
Element | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Snow (in) | 5.1 | 3.2 | 1.8 | 0.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.0 | 3.1 | 14.7 |
Snowfall Extremes
Period of Record: 1893-2006
Month | High (in) | Year | 1-Day Max (in) | Date |
---|---|---|---|---|
Jan | 21.2 | 1979 | 11.0 | 01-31-1982 |
Feb | 19.5 | 1910 | 12.0 | 02-15-1908 |
Mar | 25.4 | 1912 | 9.4 | 03-27-1947 |
Apr | 10.0 | 1971 | 8.0 | 04-20-1904 |
May | 1.0 | 1929 | 1.0 | 05-02-1929 |
Jun | 0.0 | – | – | – |
Jul | 0.0 | – | – | – |
Aug | 0.0 | – | – | – |
Sep | 0.0 | – | – | – |
Oct | 3.5 | 1925 | 2.5 | 10-28-1925 |
Nov | 8.7 | 1980 | 8.0 | 11-26-1975 |
Dec | 16.5 | 1973 | 8.0 | 12-25-2002 |
Season (Jul-Jun) | 60.7 | 1911-1912 | 12.0 | 02-15-1908 |
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 | 2.4 | 1.1 | 0.6 | 0.1 |
Feb | 2.4 | 1.1 | 0.6 | 0.1 |
Mar | 1.3 | 0.5 | 0.4 | 0.1 |
Apr | 0.3 | 0.1 | 0.1 | 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 | 0.0 | 0.0 | 0.0 | 0.0 |
Nov | 0.4 | 0.3 | 0.2 | 0.1 |
Dec | 2.1 | 1.1 | 0.5 | 0.2 |
Annual | 10.0 | 4.7 | 2.6 | 0.7 |
Growing Season Summary
Station: 118147 SPARTA 1 W, 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 | 40 | 97 | 260 | 500 | 802 | 1048 | 1193 | 1137 | 882 | 578 | 241 | 72 | 6830 |
45 | 16 | 50 | 163 | 363 | 647 | 898 | 1039 | 983 | 732 | 428 | 150 | 35 | 5488 |
50 | 5 | 21 | 91 | 240 | 493 | 748 | 884 | 828 | 583 | 291 | 84 | 15 | 4274 |
55 | 1 | 7 | 44 | 142 | 345 | 598 | 730 | 673 | 437 | 178 | 39 | 5 | 3191 |
60 | 0 | 1 | 17 | 72 | 214 | 449 | 575 | 519 | 300 | 91 | 15 | 1 | 2248 |
50** | 23 | 61 | 159 | 308 | 515 | 714 | 814 | 775 | 582 | 362 | 137 | 38 | 4476 |
**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 | 4/11 | 3/22 | 3/26 | 4/26 | 5/04 | 10/20 | 9/23 | 10/03 | 11/05 | 11/12 |
30 | 4/06 | 3/07 | 3/22 | 4/16 | 5/04 | 11/01 | 10/08 | 10/16 | 11/14 | 11/28 |
28 | 4/05 | 3/06 | 3/16 | 4/12 | 4/19 | 11/06 | 10/09 | 10/21 | 11/17 | 12/04 |
24 | 3/18 | 3/02 | 3/09 | 4/11 | 4/18 | 11/14 | 10/24 | 10/31 | 12/05 | 12/09 |
20 | 3/10 | 2/07 | 2/14 | 3/25 | 3/27 | 11/22 | 11/02 | 11/09 | 12/20 | 3/01 |
16 | 2/16 | 1/11 | 1/31 | 3/12 | 3/25 | 12/12 | 11/03 | 11/19 | 12/24 | 1/04 |
Length of Growing Season (Days)
Derived from 1971-2000 Averages
Temp °F | Median | Shortest | 10% | 90% | Longest |
---|---|---|---|---|---|
32 | 191 | 167 | 170 | 212 | 215 |
30 | 207 | 168 | 191 | 230 | 255 |
28 | 215 | 190 | 197 | 238 | 261 |
24 | 239 | 202 | 213 | 261 | 269 |
20 | 261 | 228 | 241 | 288 | 342 |
16 | 291 | 237 | 267 | 326 | 344 |
Copyright 2007 Illinois State Water Survey
Last Modified: September 11, 2007