Historical Climate Data

Precipitation Summary

Station: 119241 WHITE HALL 1 E, IL

1971-2000 NCDC Normals

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Prec. (in) 1.60 1.75 3.28 3.55 4.34 3.56 3.37 2.84 2.96 2.62 3.25 2.57 35.69

Precipitation Extremes

Period of Record: 1887-2006


Month
High (in)
Year
Low (in)
Year 		1-Day
Max (in)
Date
Jan 6.45 2005 0.00 1986 2.32 01-13-1911
Feb 5.48 1908 0.00 1912 1.90 02-14-1909
Mar 7.97 1922 0.05 1910 2.78 03-14-1922
Apr 8.72 1994 0.86 1971 3.98 04-30-1970
May 11.15 1943 0.37 1934 3.68 05-05-1991
Jun 12.35 1945 0.35 1959 4.22 06-09-1945
Jul 12.40 1981 0.04 1934 4.46 07-26-1981
Aug 9.90 1946 0.01 1897 4.80 08-16-1946
Sep 15.77 1926 0.00 1940 5.39 09-04-1926
Oct 12.43 1941 0.20 1964 3.52 10-05-1941
Nov 8.48 1985 0.10 1904 3.63 11-22-1942
Dec 9.51 1982 0.01 1891 5.60 12-03-1982
             
Annual 55.23 1993 19.20 1908 5.60 12-03-1982
Winter 11.13 1983 0.99 1920 5.60 12-03-1982
Spring 19.96 1927 3.36 1930 3.98 04-30-1970
Summer 21.86 1915 3.86 1930 4.80 08-16-1946
Fall 24.64 1926 3.29 1979 5.39 09-04-1926

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 7.0 3.7 0.8 0.3
Feb 6.5 3.8 1.1 0.4
Mar 10.6 6.8 2.3 0.6
Apr 11.0 6.9 2.3 0.9
May 11.0 6.9 2.9 1.1
Jun 8.9 5.8 2.6 0.9
Jul 8.7 5.6 2.1 1.1
Aug 7.9 5.7 2.2 0.6
Sep 7.7 5.1 2.4 0.7
Oct 8.2 5.5 2.0 0.4
Nov 9.7 6.6 2.3 0.7
Dec 8.4 4.7 1.5 0.6
         
Annual 105.8 67.0 24.5 8.2
Winter 21.9 12.2 3.4 1.4
Spring 32.6 20.5 7.5 2.5
Summer 25.5 17.1 6.8 2.6
Fall 25.6 17.1 6.7 1.8

Temperature Summary

Station 119241 WHITE HALL 1 E, IL

1971-2000 NCDC Normals

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High °F 34.3 40.3 51.8 63.5 73.8 82.6 86.7 84.8 78.0 67.2 51.8 39.5 62.9
Low °F 15.7 20.1 30.4 41.5 51.7 61.0 65.0 62.7 53.8 42.5 31.7 21.4 41.5
Mean °F 25.0 30.2 41.1 52.5 62.8 71.8 75.9 73.8 65.9 54.9 41.8 30.5 52.2
HDD 1241 975 741 381 150 12 0 12 72 327 697 1072 5680
CDD 0 0 0 6 80 216 337 283 98 13 0 0 1033

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

Temperature Extremes

Period of Record: 1887-2006


Month 		High
Mean °F
Year 		Low
Mean °F
Year 		1-Day
Max °F
Date 		1-Day
Min °F
Date
Jan 40.5 1933 12.9 1918 77 01-23-1909 -26 01-07-1912
Feb 42.4 1976 19.0 1978 83 02-10-1932 -25 02-13-1905
Mar 55.9 1946 27.9 1960 94 03-22-1907 -13 03-05-1978
Apr 61.7 1981 44.5 1893 93 04-10-1930 11 04-05-1920
May 71.6 1962 57.3 1924 103 05-31-1934 22 05-01-1907
Jun 80.7 1934 67.4 1928 106 06-28-1934 35 06-03-1946
Jul 86.2 1934 72.1 1924 113 07-20-1934 35 07-19-1918
Aug 83.6 1936 67.9 2004 112 08-09-1934 41 08-27-1910
Sep 75.5 1931 60.3 1918 104 09-06-1913 25 09-28-1942
Oct 65.6 1963 46.6 1987 95 10-07-1939 13 10-30-1925
Nov 52.5 1931 35.6 1996 84 11-07-1915 -6 11-30-1929
Dec 41.5 1923 18.0 1989 74 12-15-1948 -20 12-22-1989
                 
Annual 61.4 1902 46.3 1903 113 07-20-1934 -26 01-07-1912
Winter 39.7 1932 22.5 1978 83 02-10-1932 -26 01-07-1912
Spring 59.6 1977 48.1 1984 103 05-31-1934 -13 03-05-1978
Summer 82.1 1934 69.9 2004 113 07-20-1934 35 06-03-1946
Fall 62.9 1931 50.9 1993 104 09-06-1913 -6 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 12.6 28.4 3.8
Feb 0.0 7.2 23.2 2.5
Mar 0.0 1.8 17.3 0.1
Apr 0.0 0.0 4.6 0.0
May 0.5 0.0 0.1 0.0
Jun 6.2 0.0 0.0 0.0
Jul 11.5 0.0 0.0 0.0
Aug 7.9 0.0 0.0 0.0
Sep 3.1 0.0 0.0 0.0
Oct 0.1 0.0 4.2 0.0
Nov 0.0 1.2 15.3 0.0
Dec 0.0 7.8 25.8 1.9
         
Annual 29.2 30.5 118.4 8.2
Winter 0.0 27.6 77.5 8.1
Spring 0.5 1.8 22.0 0.1
Summer 25.7 0.0 0.0 0.0
Fall 3.2 1.2 19.5 0.0

Snowfall Summary

Station: 119241 WHITE HALL 1 E, IL

1971-2000 Averages

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Snow (in) 5.5 3.3 2.2 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.8 3.7 16.0

Snowfall Extremes

Period of Record: 1887-2006

Month High (in) Year 1-Day Max (in) Date
Jan 18.0 1997 10.5 01-02-1999
Feb 17.0 1993 13.0 02-24-1965
Mar 24.0 1960 14.0 03-19-1906
Apr 6.2 1920 5.0 04-14-1980
May 0.0 - - -
Jun 0.0 - - -
Jul 0.0 - - -
Aug 0.0 - - -
Sep 0.0 - - -
Oct 1.0 1916 1.0 10-29-1925
Nov 13.5 1932 10.0 11-15-1932
Dec 14.5 2000 7.5 12-24-1915
Season (Jul-Jun) 39.0 1959-1960 14.0 03-19-1906

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 1.7 1.1 0.6 0.2
Feb 1.7 1.1 0.6 0.2
Mar 1.0 0.7 0.5 0.1
Apr 0.2 0.2 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 0.3 0.3 0.1 0.1
Dec 2.0 1.6 0.8 0.1
Annual 6.7 5.0 3.0 0.8

Growing Season Summary

Station: 119241 WHITE HALL 1 E, 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 15 50 175 414 731 979 1133 1069 811 497 178 38 6059
45 4 22 101 285 577 829 978 914 661 355 103 17 4821
50 1 8 54 176 425 679 823 760 514 231 53 7 3710
55 0 2 26 96 283 529 669 605 371 132 23 2 2722
60 0 0 9 46 163 382 514 450 241 62 7 0 1866
50** 11 35 113 249 455 658 775 727 525 308 106 24 3967

**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 4/10 3/28 4/04 4/26 5/05 10/16 10/02 10/04 10/30 11/05
30 4/09 3/25 3/28 4/21 5/05 10/24 10/03 10/10 11/05 11/07
28 4/06 3/15 3/21 4/17 5/05 11/02 10/02 10/20 11/14 11/20
24 3/24 3/07 3/11 4/09 4/12 11/09 10/07 10/22 11/30 12/02
20 3/13 2/07 2/25 3/25 3/28 11/19 10/11 11/06 12/08 12/15
16 3/06 1/15 2/05 3/20 3/25 12/02 11/02 11/08 12/20 1/03

Length of Growing Season (Days)

Derived from 1971-2000 Averages

Temp °F Median Shortest 10% 90% Longest
32 185 160 170 204 215
30 198 166 179 212 227
28 210 171 190 228 243
24 227 187 210 257 263
20 251 213 235 279 296
16 273 237 248 301 319

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