Historical Climate Data

Precipitation Summary

Station: 110598 BENTLEY, IL

1971-2000 NCDC Normals

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Prec. (in) 1.22 1.54 2.87 3.46 4.58 3.63 4.13 3.61 3.72 2.82 2.77 2.05 36.40

Precipitation Extremes

Period of Record: 1948-2006


Month
High (in)
Year
Low (in)
Year 		1-Day
Max (in)
Date
Jan 6.79 1965 0.03 1981 2.50 01-01-1965
Feb 5.39 1997 0.08 1967 3.59 02-21-1997
Mar 7.48 1973 0.42 1956 3.70 03-25-1954
Apr 7.22 1954 0.69 1985 2.97 04-22-1961
May 11.52 1996 0.64 1992 3.13 05-17-1995
Jun 11.61 1960 0.58 1991 4.32 06-14-1990
Jul 13.74 1992 0.46 1977 4.23 07-21-1996
Aug 10.67 1977 0.34 1992 5.32 08-23-2001
Sep 13.46 1970 0.18 1956 3.82 09-28-1999
Oct 8.41 1969 0.10 1964 2.62 10-05-1954
Nov 8.22 1985 0.25 1999 2.00 11-01-1977
Dec 6.50 1982 0.07 1976 2.90 12-02-1982
             
Annual 55.41 1973 16.95 1964 5.32 08-23-2001
Winter 8.45 1965 1.44 1977 3.59 02-21-1997
Spring 19.80 1995 4.09 1956 3.70 03-25-1954
Summer 22.74 1993 4.09 1991 5.32 08-23-2001
Fall 18.46 1961 1.74 1956 3.82 09-28-1999

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 3.3 0.6 0.2
Feb 6.6 3.5 0.8 0.3
Mar 9.7 6.0 1.8 0.7
Apr 10.4 6.4 2.7 0.7
May 11.9 7.8 2.9 1.3
Jun 9.7 5.9 2.6 0.9
Jul 9.0 5.9 2.6 1.3
Aug 8.7 5.5 2.4 1.2
Sep 8.2 5.5 2.7 1.1
Oct 8.5 5.2 1.8 0.6
Nov 8.9 5.6 2.0 0.7
Dec 7.6 4.3 1.3 0.5
         
Annual 106.2 64.9 24.2 9.5
Winter 21.2 11.1 2.7 1.0
Spring 32.0 20.1 7.4 2.7
Summer 27.4 17.3 7.5 3.4
Fall 25.6 16.3 6.6 2.4

Temperature Summary

There are insufficient temperature data to produce the temperature summary.

Snowfall Summary

Station: 110598 BENTLEY, IL

1971-2000 Averages

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Snow (in) 6.4 4.9 3.2 0.8 0.0 0.0 0.0 0.0 0.0 0.1 2.1 5.2 22.7

Snowfall Extremes

Period of Record: 1948-2006

Month High (in) Year 1-Day Max (in) Date
Jan 15.9 1997 10.0 01-19-1995
Feb 19.0 1986 6.5 02-25-1993
Mar 19.0 1960 11.0 03-09-1998
Apr 7.0 1982 6.0 04-14-1980
May 0.0 - - -
Jun 0.0 - - -
Jul 0.0 - - -
Aug 0.0 - - -
Sep 0.0 - - -
Oct 1.0 1997 1.0 10-27-1997
Nov 11.9 1974 6.0 11-25-2004
Dec 18.3 2000 8.5 12-15-1987
Season (Jul-Jun) 44.0 1974-1975 11.0 03-09-1998

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 3.4 2.0 0.9 0.1
Feb 3.4 2.0 0.9 0.1
Mar 1.6 1.0 0.7 0.1
Apr 0.4 0.2 0.2 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 0.1 0.0 0.0 0.0
Nov 1.2 0.8 0.5 0.0
Dec 3.5 2.0 1.0 0.1
Annual 14.9 8.6 4.5 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