Historical Climate Data

Precipitation Summary

Station: 115917 MOUNT OLIVE 1 E, IL

1971-2000 NCDC Normals

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Prec. (in) 2.07 2.16 3.54 3.88 4.11 3.53 3.49 3.42 3.18 2.69 3.75 2.91 38.73

Precipitation Extremes

Period of Record: 1940-2006


Month
High (in)
Year
Low (in)
Year 		1-Day
Max (in)
Date
Jan 8.82 1950 0.08 1986 2.62 01-03-1950
Feb 6.03 1951 0.15 1947 2.16 02-07-1999
Mar 9.15 1945 0.35 2001 2.88 03-28-1977
Apr 10.17 1994 0.58 1988 4.87 04-22-1944
May 12.50 1943 0.80 1972 3.86 05-17-1943
Jun 12.75 1957 0.72 1959 3.65 06-14-1957
Jul 8.55 1958 0.50 1947 3.08 07-26-1973
Aug 9.97 1946 0.00 1971 3.55 08-28-1974
Sep 9.63 1993 0.00 1979 5.10 09-17-1969
Oct 7.14 1949 0.30 1952 3.28 10-24-1976
Nov 10.75 1985 0.33 1949 3.60 11-01-1946
Dec 8.19 1967 0.20 1955 3.27 12-08-1966
             
Annual 51.37 1973 26.33 1980 5.10 09-17-1969
Winter 18.29 1950 2.44 1970 3.27 12-08-1966
Spring 21.12 2002 5.23 2005 4.87 04-22-1944
Summer 20.42 2000 4.04 1984 3.65 06-14-1957
Fall 17.21 1993 3.30 1995 5.10 09-17-1969

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 5.6 4.9 1.3 0.3
Feb 5.6 4.7 1.4 0.4
Mar 7.6 6.9 2.6 0.7
Apr 7.4 6.7 3.0 0.8
May 7.1 6.9 3.2 1.1
Jun 6.2 5.9 2.7 1.0
Jul 5.9 5.6 2.7 1.1
Aug 6.0 5.6 2.5 1.0
Sep 4.8 4.6 2.2 1.0
Oct 5.1 4.9 1.9 0.6
Nov 6.7 6.4 2.9 1.0
Dec 5.2 4.8 2.0 0.9
         
Annual 73.4 68.0 28.4 10.0
Winter 16.4 14.4 4.7 1.6
Spring 22.2 20.5 8.9 2.6
Summer 18.2 17.1 7.8 3.1
Fall 16.7 15.9 7.1 2.7

Temperature Summary

There are insufficient temperature data to produce the temperature summary.

Snowfall Summary

Station: 115917 MOUNT OLIVE 1 E, IL

1971-2000 Averages

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Snow (in) 6.4 3.9 3.6 0.9 0.0 0.0 0.0 0.0 0.0 0.1 1.4 4.5 20.8

Snowfall Extremes

Period of Record: 1940-2006

Month High (in) Year 1-Day Max (in) Date
Jan 19.0 1979 11.0 01-31-1982
Feb 14.0 1993 6.5 02-16-1993
Mar 27.0 1978 10.0 03-08-1978
Apr 12.0 1971 12.0 04-06-1971
May 0.0 - - -
Jun 0.0 - - -
Jul 0.0 - - -
Aug 0.0 - - -
Sep 0.0 - - -
Oct 2.0 1993 2.0 10-31-1993
Nov 12.5 1951 12.5 11-06-1951
Dec 20.0 1973 10.0 12-31-1973
Season (Jul-Jun) 63.0 1977-1978 12.5 11-06-1951

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 1.9 1.7 1.0 0.2
Feb 1.9 1.7 1.0 0.2
Mar 1.3 1.3 0.9 0.2
Apr 0.2 0.2 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 0.6 0.5 0.4 0.1
Dec 1.8 1.7 1.1 0.2
Annual 8.6 8.2 5.1 1.0

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