Peotone Weather
Peotone's 30 year averages


Snowfall Summary

Historical Climate Data

Precipitation Summary

Station: PEOTONE, IL


1981-2010 NCDC Normals

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Prec. (in) 1.81 1.75 2.42 3.77 4.67 4.54 4.45 4.33 3.70 3.63 3.91 2.48 41.46

Precipitation Extremes

Period of Record: 1940-2006


Month

High (in)

Year

Low (in)

Year
1-Day
Max (in)

Date
Jan 5.03 1965 0.09 1986 2.60 01-27-1967
Feb 5.12 1997 0.00 1987 2.30 02-06-1942
Mar 6.72 1944 0.56 1958 2.47 03-25-1954
Apr 11.02 1981 0.69 1971 3.84 04-14-1981
May 12.22 1974 0.92 1950 5.29 05-19-1987
Jun 11.95 1993 0.28 1991 7.92 06-13-1972
Jul 10.84 1996 0.56 1946 9.56 07-13-1957
Aug 10.65 2001 0.34 1996 3.51 08-17-1968
Sep 8.73 1961 0.16 1940 4.10 09-01-1989
Oct 11.27 1941 0.19 1964 3.50 10-10-1954
Nov 10.48 1990 0.65 1999 4.79 11-27-1990
Dec 6.61 1982 0.27 1995 3.89 12-03-1982
             
Annual 59.51 1993 22.43 1963 9.56 07-13-1957
Winter 13.42 1950 1.29 1977 3.89 12-03-1982
Spring 19.75 1974 3.48 1992 5.29 05-19-1987
Summer 24.27 1972 4.79 1991 9.56 07-13-1957
Fall 19.38 1990 2.89 1956 4.79 11-27-1990

* Measurement here at my site: August 23rd 2007 we had 4.61 inches (breaking the above listed record for August single day rain) **The NWS COOP observer had 5.54 inches

* Measurement here at my site: August 2007 we had 18.39 inches (breaking the above listed record for August) **The NWS COOP observer had 16.06 inches

* Measurement here at my site: September 2008 we had 13.07 inches (breaking the above listed record for September) **The NWS COOP observer had 14.33 inches


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 7.5 3.7 1.0 0.3
Feb 6.8 3.4 0.8 0.2
Mar 9.2 6.4 1.7 0.4
Apr 10.5 7.3 2.5 1.0
May 9.0 6.9 3.4 1.3
Jun 9.1 7.2 3.2 1.6
Jul 7.6 5.9 2.8 1.2
Aug 7.6 5.6 2.3 1.1
Sep 7.3 5.6 2.5 1.0
Oct 7.9 5.9 2.3 0.9
Nov 9.2 6.6 2.1 0.9
Dec 8.8 5.4 1.3 0.5
         
Annual 100.7 70.0 25.8 10.4
Winter 23.1 12.6 3.0 1.0
Spring 28.8 20.6 7.6 2.7
Summer 24.3 18.7 8.3 3.9
Fall 24.5 18.1 6.9 2.8


Snowfall Summary

Station: PEOTONE, IL


1981-2010 Averages

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Snow (in) 7.8 7.4 4.0 0.9 0.0 0.0 0.0 0.0 0.0 0.2 1.0 5.6 26.9

Snowfall Extremes

Period of Record: 1940-2006

Month High (in) Year 1-Day Max (in) Date
Jan 39.6 1979 26.0 01-27-1967
Feb 19.4 1994 7.0 02-26-1994
Mar 15.9 1970 12.0 03-26-1970
Apr 13.0 1982 11.0 04-06-1982
May 0.5 1997 0.5 05-01-1997
Jun 0.0 - - -
Jul 0.0 - - -
Aug 0.0 - - -
Sep 0.0 - - -
Oct 6.0 2000 6.0 10-08-2000
Nov 11.5 1951 5.5 11-28-1977
Dec 28.0 2000 12.0 12-08-1950
Season (Jul-Jun) 65.0 1978-1979 26.0 01-27-1967

* Measurement here at my site: February 2nd 2011 we had 15.0 inches of snow.(breaking the above listed record for February single day snow)

* Measurement here at my site: February 2011 we had 22.2 inches of snow. (breaking the above listed record for February snowfall)


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