Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of December 2019. For more information, please see Climatological Rankings.


Illinois

Precipitation Rankings, July 2009

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Wettest/Driest
Since
Record
July 2009
1-Month
4.59"
(116.59mm)
3.64"
(92.46mm)
0.95"
(24.13mm)
93rd Driest Driest since: 2007 1930
33rd Wettest Wettest since: 2008 1958
Jun–Jul 2009
2-Month
9.71"
(246.63mm)
7.72"
(196.09mm)
1.99"
(50.54mm)
100th Driest Driest since: 2007 1936
26th Wettest Wettest since: 2008 2015
Ties: 1986
May–Jul 2009
3-Month
15.36"
(390.14mm)
11.80"
(299.72mm)
3.56"
(90.42mm)
105th Driest Driest since: 2007 1936
21st Wettest Wettest since: 2008 2015
Apr–Jul 2009
4-Month
21.52"
(546.61mm)
15.52"
(394.21mm)
6.00"
(152.40mm)
118th Driest Driest since: 2008 1988
8th Wettest Wettest since: 1993 1957
Mar–Jul 2009
5-Month
25.57"
(649.48mm)
18.61"
(472.69mm)
6.96"
(176.79mm)
120th Driest Driest since: 2007 1936
6th Wettest Wettest since: 2008 1973
Ties: 1927
Feb–Jul 2009
6-Month
28.00"
(711.20mm)
20.47"
(519.94mm)
7.53"
(191.26mm)
120th Driest Driest since: 2007 1936
6th Wettest Wettest since: 2008 2008
Jan–Jul 2009
7-Month
29.01"
(736.85mm)
22.60"
(574.04mm)
6.41"
(162.81mm)
113th Driest Driest since: 2007 1936
13th Wettest Wettest since: 2008 2008
Ties: 1929
Dec 2008–Jul 2009
8-Month
33.26"
(844.80mm)
24.92"
(632.97mm)
8.34"
(211.83mm)
119th Driest Driest since: 2007 1936
6th Wettest Wettest since: 2008 2008
Nov 2008–Jul 2009
9-Month
34.75"
(882.65mm)
27.67"
(702.82mm)
7.08"
(179.83mm)
113th Driest Driest since: 2007 1934
12th Wettest Wettest since: 2008 1993
Oct 2008–Jul 2009
10-Month
37.17"
(944.12mm)
30.46"
(773.68mm)
6.71"
(170.44mm)
112th Driest Driest since: 2007 1934
13th Wettest Wettest since: 2008 2010
Sep 2008–Jul 2009
11-Month
44.79"
(1,137.67mm)
33.96"
(862.58mm)
10.83"
(275.09mm)
120th Driest Driest since: 2008 1934
5th Wettest Wettest since: 1993 1927
Aug 2008–Jul 2009
12-Month
46.72"
(1,186.69mm)
37.46"
(951.48mm)
9.26"
(235.21mm)
116th Driest Driest since: 2007 1934
9th Wettest Wettest since: 2008 1927
Feb 2008–Jul 2009
18-Month
76.75"
(1,949.45mm)
57.89"
(1,470.41mm)
18.86"
(479.04mm)
123rd Driest Driest since: 2008 1931
2nd Wettest Wettest to Date 2010
Aug 2007–Jul 2009
24-Month
94.22"
(2,393.19mm)
74.90"
(1,902.46mm)
19.32"
(490.73mm)
121st Driest Driest since: 2008 1954
3rd Wettest Wettest since: 1974 2010
Aug 2006–Jul 2009
36-Month
133.87"
(3,400.30mm)
112.32"
(2,852.93mm)
21.55"
(547.37mm)
118th Driest Driest since: 2008 1965
5th Wettest Wettest since: 1975 2010
Aug 2005–Jul 2009
48-Month
169.75"
(4,311.65mm)
149.69"
(3,802.13mm)
20.06"
(509.52mm)
112th Driest Driest since: 2008 1956
10th Wettest Wettest since: 1976 2011
Aug 2004–Jul 2009
60-Month
205.10"
(5,209.54mm)
187.12"
(4,752.85mm)
17.98"
(456.69mm)
105th Driest Driest since: 2008 1934
16th Wettest Wettest since: 1996 2011

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published January 2020, retrieved on January 20, 2020 from https://www.ncdc.noaa.gov/cag/