Historical Climate Data

Precipitation Summary

Station: 117952 SIDELL 5NW, IL

1971-2000 NCDC Normals

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Prec. (in) 2.08 1.97 2.89 3.68 4.32 3.48 4.66 3.73 2.84 2.82 3.45 2.84 38.76

Precipitation Extremes

Period of Record: 1913-2006


Month
High (in)
Year
Low (in)
Year 		1-Day
Max (in)
Date
Jan 9.22 1950 0.06 1986 3.23 01-04-1950
Feb 6.05 1985 0.15 1947 2.66 02-21-1951
Mar 6.35 1998 0.66 2001 2.16 03-13-1917
Apr 8.42 1994 0.48 1976 4.30 04-06-1965
May 10.76 1996 0.72 1987 3.56 05-25-1994
Jun 9.24 1958 0.21 1988 3.95 06-11-1958
Jul 10.47 1992 0.76 1916 4.03 07-19-1982
Aug 7.16 1985 0.72 1953 2.70 08-13-1999
Sep 9.08 1950 0.05 1979 3.90 09-08-1972
Oct 8.00 2001 0.34 1964 3.75 10-22-1983
Nov 9.96 1985 0.56 1917 2.72 11-16-1955
Dec 7.83 1990 0.05 1958 2.43 12-08-1966
             
Annual 51.72 1993 23.95 1976 4.30 04-06-1965
Winter 18.88 1950 1.97 1963 3.23 01-04-1950
Spring 20.43 1998 4.52 2001 4.30 04-06-1965
Summer 18.37 1958 4.94 1959 4.03 07-19-1982
Fall 16.13 1993 3.31 1953 3.90 09-08-1972

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 9.2 5.2 1.3 0.3
Feb 8.4 4.5 1.1 0.4
Mar 10.4 6.9 2.0 0.4
Apr 11.6 8.0 2.5 0.7
May 10.5 7.9 3.0 1.1
Jun 9.6 6.7 2.2 0.7
Jul 9.0 6.5 3.2 1.4
Aug 8.6 6.1 2.5 1.0
Sep 7.6 5.3 1.8 0.7
Oct 8.1 5.1 2.1 0.7
Nov 9.6 6.3 2.4 0.8
Dec 10.0 6.3 1.8 0.5
         
Annual 112.7 75.0 25.9 8.7
Winter 27.6 16.1 4.2 1.2
Spring 32.4 22.8 7.5 2.2
Summer 27.2 19.3 8.0 3.1
Fall 25.3 16.7 6.3 2.2

Temperature Summary

There are insufficient temperature data to produce the temperature summary.

Snowfall Summary

Station: 117952 SIDELL 5NW, IL

1971-2000 Averages

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Snow (in) 8.0 4.0 2.6 0.4 0.0 0.0 0.0 0.0 0.0 0.0 1.2 5.4 21.6

Snowfall Extremes

Period of Record: 1913-2006

Month High (in) Year 1-Day Max (in) Date
Jan 21.5 1999 10.0 01-02-1999
Feb 18.9 2003 8.0 02-24-1986
Mar 22.5 1951 7.0 03-11-1948
Apr 6.3 1970 6.3 04-02-1970
May 0.0 - - -
Jun 0.0 - - -
Jul 0.0 - - -
Aug 0.0 - - -
Sep 0.0 - - -
Oct 0.0 - - -
Nov 12.7 1951 5.4 11-06-1951
Dec 25.0 1973 11.0 12-20-1973
Season (Jul-Jun) 48.5 1950-1951 11.0 12-20-1973

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 2.5 1.5 0.9 0.1
Feb 2.5 1.5 0.9 0.1
Mar 1.4 0.8 0.7 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 0.8 0.5 0.3 0.0
Dec 2.9 1.9 1.1 0.3
Annual 11.0 7.7 4.6 0.7

Growing Season Summary

There are insufficient temperature data to produce the growing season summary.

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