Historical Climate Data

Precipitation Summary

Station: 118756 UTICA STARVED ROCK DAM, IL


1971-2000 NCDC Normals

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Prec. (in) 1.66 1.66 2.85 3.61 4.26 3.91 3.74 3.77 3.59 2.59 3.03 2.34 37.01

Precipitation Extremes

Period of Record: 1943-2005


Month

High (in)

Year

Low (in)

Year
1-Day
Max (in)

Date
Jan 5.27 1965 0.16 1981 1.95 01-01-1985
Feb 5.36 1997 0.04 1987 2.88 02-21-1997
Mar 6.48 1948 0.08 1958 3.80 03-25-1954
Apr 8.36 1950 0.65 1946 2.32 04-27-1943
May 9.18 1970 0.62 1992 3.42 05-12-1966
Jun 11.60 1970 0.20 1988 3.73 06-02-1970
Jul 12.78 1958 0.16 1945 6.97 07-14-1958
Aug 10.19 1965 0.42 1996 4.85 08-15-1981
Sep 14.59 1961 0.58 1990 4.02 09-12-1961
Oct 8.16 1991 0.00 1964 2.70 10-11-1969
Nov 9.60 1985 0.25 1976 2.44 11-28-1990
Dec 6.34 1982 0.25 1995 3.15 12-03-1982
             
Annual 55.73 1970 21.34 1956 6.97 07-14-1958
Winter 9.92 1950 1.48 1977 3.15 12-03-1982
Spring 19.01 1991 4.16 1992 3.80 03-25-1954
Summer 22.47 1958 4.17 1991 6.97 07-14-1958
Fall 20.92 1961 2.27 1956 4.02 09-12-1961


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 10.6 4.2 0.9 0.1
Feb 8.5 4.0 0.9 0.2
Mar 11.3 6.5 1.7 0.5
Apr 11.7 7.0 2.4 0.9
May 11.4 7.3 2.9 1.1
Jun 10.1 6.4 2.8 1.1
Jul 9.7 5.9 2.5 1.0
Aug 9.2 5.9 2.5 1.1
Sep 8.4 5.3 2.1 1.2
Oct 9.1 5.0 1.9 0.6
Nov 10.8 6.0 1.9 0.7
Dec 11.3 5.1 1.3 0.5
         
Annual 122.0 68.5 23.8 9.1
Winter 30.3 13.3 3.1 0.9
Spring 34.4 20.7 7.0 2.4
Summer 28.9 18.2 7.8 3.2
Fall 28.3 16.2 5.9 2.5

Temperature Summary

There are insufficient temperature data to produce the temperature summary.


Snowfall Summary

Station: 118756 UTICA STARVED ROCK DAM, IL


1971-2000 Averages

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Snow (in) 8.1 5.2 2.4 0.6 0.0 0.0 0.0 0.0 0.0 0.0 0.8 4.6 21.7

Snowfall Extremes

Period of Record: 1943-2005

Month High (in) Year 1-Day Max (in) Date
Jan 38.3 1979 17.0 01-27-1967
Feb 15.6 1989 6.0 02-15-2003
Mar 11.5 1991 7.0 03-20-1967
Apr 9.0 1982 7.0 04-06-1982
May 0.0 - - -
Jun 0.0 - - -
Jul 0.0 - - -
Aug 0.0 - - -
Sep 0.0 - - -
Oct 3.0 1967 3.0 10-27-1967
Nov 11.0 1951 9.0 11-07-1951
Dec 20.0 1951 7.0 12-15-1951
Season (Jul-Jun) 70.9 1978-1979 17.0 01-27-1967

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 3.6 2.2 1.2 0.1
Feb 3.6 2.2 1.2 0.1
Mar 1.5 0.8 0.4 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 0.6 0.3 0.2 0.0
Dec 3.0 1.8 1.2 0.2
Annual 13.2 7.5 4.7 0.8

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