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, December 2009

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Wettest/Driest
Since
Record
December 2009
1-Month
3.98"
(101.09mm)
2.33"
(59.18mm)
1.65"
(41.91mm)
114th Driest Driest since: 2007 1976
12th Wettest Wettest since: 2008 1982
Nov–Dec 2009
2-Month
6.46"
(164.08mm)
5.09"
(129.29mm)
1.37"
(34.79mm)
94th Driest Driest since: 2008 1976
32nd Wettest Wettest since: 2006 2015
Oct–Dec 2009
3-Month
14.95"
(379.73mm)
7.88"
(200.15mm)
7.07"
(179.58mm)
124th Driest Driest since: 2008 1904
2nd Wettest Wettest since: 1985 1985
Sep–Dec 2009
4-Month
17.23"
(437.64mm)
11.37"
(288.80mm)
5.86"
(148.84mm)
122nd Driest Driest since: 2008 1939
4th Wettest Wettest since: 1984 1926
Aug–Dec 2009
5-Month
21.95"
(557.53mm)
14.87"
(377.70mm)
7.08"
(179.83mm)
123rd Driest Driest since: 2008 1953
3rd Wettest Wettest since: 1985 1926
Jul–Dec 2009
6-Month
26.54"
(674.12mm)
18.51"
(470.15mm)
8.03"
(203.97mm)
123rd Driest Driest since: 2008 1953
3rd Wettest Wettest since: 1993 1993
Jun–Dec 2009
7-Month
31.66"
(804.16mm)
22.59"
(573.79mm)
9.07"
(230.37mm)
123rd Driest Driest since: 2008 1953
3rd Wettest Wettest since: 1993 2015
May–Dec 2009
8-Month
37.31"
(947.67mm)
26.68"
(677.67mm)
10.63"
(270.00mm)
122nd Driest Driest since: 2008 1953
4th Wettest Wettest since: 1993 2015
Apr–Dec 2009
9-Month
43.47"
(1,104.14mm)
30.39"
(771.91mm)
13.08"
(332.23mm)
124th Driest Driest since: 2008 1901
2nd Wettest Wettest to Date 2015
Mar–Dec 2009
10-Month
47.52"
(1,207.01mm)
33.48"
(850.39mm)
14.04"
(356.62mm)
125th Driest Driest since: 2008 1930
1st Wettest Wettest to Date 2009
Feb–Dec 2009
11-Month
49.95"
(1,268.73mm)
35.34"
(897.64mm)
14.61"
(371.09mm)
125th Driest Driest since: 2008 1930
1st Wettest Wettest to Date 2009
Jan–Dec 2009
12-Month
50.96"
(1,294.38mm)
37.47"
(951.74mm)
13.49"
(342.64mm)
124th Driest Driest since: 2008 1901
2nd Wettest Wettest since: 1993 1993
Jul 2008–Dec 2009
18-Month
74.58"
(1,894.33mm)
55.97"
(1,421.64mm)
18.61"
(472.69mm)
122nd Driest Driest since: 2008 1953
3rd Wettest Wettest since: 1993 1927
Jan 2008–Dec 2009
24-Month
101.13"
(2,568.70mm)
74.89"
(1,902.21mm)
26.24"
(666.49mm)
124th Driest Driest since: 2008 1964
1st Wettest Wettest to Date 2009
Jan 2007–Dec 2009
36-Month
137.82"
(3,500.63mm)
112.28"
(2,851.91mm)
25.54"
(648.72mm)
122nd Driest Driest since: 2008 1964
2nd Wettest Wettest to Date 2010
Jan 2006–Dec 2009
48-Month
178.46"
(4,532.88mm)
149.70"
(3,802.38mm)
28.76"
(730.50mm)
120th Driest Driest since: 2008 1956
3rd Wettest Wettest to Date 2011
Jan 2005–Dec 2009
60-Month
209.89"
(5,331.21mm)
187.12"
(4,752.85mm)
22.77"
(578.36mm)
112th Driest Driest since: 2008 1956
10th Wettest Wettest since: 1986 2011

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published January 2020, retrieved on January 26, 2020 from https://www.ncdc.noaa.gov/cag/