Historical Climate Data

Precipitation Summary

Station: 110356 AVON 5 NE, IL

1971-2000 NCDC Normals

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Prec. (in) 1.35 1.44 2.73 3.56 4.05 4.23 4.37 3.49 3.54 2.87 2.74 2.00 36.37

Precipitation Extremes

Period of Record: 1950-2006


Month
High (in)
Year
Low (in)
Year 		1-Day
Max (in)
Date
Jan 7.51 1965 0.12 1956 2.23 01-02-1965
Feb 5.33 1997 0.16 1987 3.32 02-21-1997
Mar 7.56 1985 0.14 1958 4.75 03-25-1954
Apr 7.94 1954 0.85 1962 2.80 04-06-1954
May 10.18 1996 0.67 1964 3.44 05-19-1959
Jun 9.65 1973 0.03 1963 4.49 06-20-1964
Jul 12.69 1982 0.45 1988 4.78 07-24-1967
Aug 9.20 1980 0.43 1953 5.50 08-23-2002
Sep 14.16 1961 0.00 1979 5.72 09-24-1961
Oct 10.19 1986 0.08 1964 7.38 10-03-1986
Nov 10.10 1985 0.13 1976 2.43 11-30-2006
Dec 6.70 1982 0.27 1962 2.82 12-03-1982
             
Annual 54.41 1973 21.59 1989 7.38 10-03-1986
Winter 9.70 1955 1.15 1970 3.32 02-21-1997
Spring 17.55 1973 4.01 1971 4.75 03-25-1954
Summer 25.32 1993 4.34 1988 5.50 08-23-2002
Fall 20.16 1961 2.72 1956 7.38 10-03-1986

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 5.8 3.7 0.8 0.2
Feb 4.8 3.1 0.7 0.3
Mar 7.2 5.5 2.1 0.5
Apr 8.9 6.6 2.5 0.8
May 9.8 7.4 3.0 1.0
Jun 8.3 6.7 2.8 1.4
Jul 7.9 6.3 3.0 1.2
Aug 8.0 5.9 2.3 1.0
Sep 6.8 5.5 2.5 1.0
Oct 7.0 5.0 2.0 0.6
Nov 7.1 5.4 2.0 0.6
Dec 6.2 4.3 1.1 0.4
         
Annual 88.0 65.7 25.0 9.2
Winter 16.8 11.1 2.6 0.9
Spring 25.9 19.5 7.6 2.4
Summer 24.2 18.9 8.1 3.6
Fall 20.9 15.9 6.5 2.3

Temperature Summary

There are insufficient temperature data to produce the temperature summary.

Snowfall Summary

Station: 110356 AVON 5 NE, IL

1971-2000 Averages

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Snow (in) 8.7 5.5 3.0 1.1 0.0 0.0 0.0 0.0 0.0 0.0 1.8 6.8 26.9

Snowfall Extremes

Period of Record: 1950-2006

Month High (in) Year 1-Day Max (in) Date
Jan 29.5 1979 12.0 01-14-1979
Feb 14.1 1960 6.0 02-24-1975
Mar 18.8 1965 8.0 03-09-1999
Apr 10.5 1997 10.5 04-11-1997
May 0.0 - - -
Jun 0.0 - - -
Jul 0.0 - - -
Aug 0.0 - - -
Sep 0.0 - - -
Oct 2.0 1967 2.0 10-27-1967
Nov 11.6 1974 7.0 11-27-1975
Dec 24.0 1977 12.0 12-19-1973
Season (Jul-Jun) 54.3 1977-1978 12.0 12-19-1973

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 2.7 2.1 1.3 0.1
Feb 2.7 2.1 1.3 0.1
Mar 1.4 1.1 0.7 0.1
Apr 0.4 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 0.0 0.0 0.0 0.0
Nov 0.9 0.7 0.4 0.1
Dec 2.7 2.4 1.5 0.3
Annual 11.5 9.8 5.9 0.9

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