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 August 2020. For more information, please see Climatological Rankings.


Illinois

Precipitation Rankings, July 2020

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
(1895-2020)
Wettest/Driest
Since
Record
July 2020
1-Month
5.36"
(136.14mm)
3.64"
(92.46mm)
1.72"
(43.68mm)
110th Driest Driest since: 2019 1930
17th Wettest Wettest since: 2016 1958
Jun–Jul 2020
2-Month
8.92"
(226.57mm)
7.72"
(196.09mm)
1.20"
(30.48mm)
92nd Driest Driest since: 2019 1936
35th Wettest Wettest since: 2018 2015
May–Jul 2020
3-Month
14.18"
(360.17mm)
11.80"
(299.72mm)
2.38"
(60.45mm)
93rd Driest Driest since: 2018 1936
34th Wettest Wettest since: 2019 2015
Ties: 1982
Apr–Jul 2020
4-Month
18.50"
(469.90mm)
15.52"
(394.21mm)
2.98"
(75.69mm)
94th Driest Driest since: 2018 1988
33rd Wettest Wettest since: 2019 1957
Ties: 2014
Mar–Jul 2020
5-Month
22.48"
(570.99mm)
18.61"
(472.69mm)
3.87"
(98.30mm)
103rd Driest Driest since: 2018 1936
24th Wettest Wettest since: 2019 1973
Feb–Jul 2020
6-Month
24.49"
(622.05mm)
20.47"
(519.94mm)
4.02"
(102.11mm)
102nd Driest Driest since: 2017 1936
25th Wettest Wettest since: 2019 2008
Jan–Jul 2020
7-Month
28.86"
(733.04mm)
22.60"
(574.04mm)
6.26"
(159.00mm)
112th Driest Driest since: 2018 1936
15th Wettest Wettest since: 2019 2008
Dec 2019–Jul 2020
8-Month
30.74"
(780.80mm)
24.92"
(632.97mm)
5.82"
(147.83mm)
109th Driest Driest since: 2018 1936
17th Wettest Wettest since: 2019 2008
Nov 2019–Jul 2020
9-Month
33.14"
(841.76mm)
27.67"
(702.82mm)
5.47"
(138.94mm)
104th Driest Driest since: 2018 1934
22nd Wettest Wettest since: 2019 1993
Oct 2019–Jul 2020
10-Month
38.15"
(969.01mm)
30.46"
(773.68mm)
7.69"
(195.33mm)
115th Driest Driest since: 2018 1934
11th Wettest Wettest since: 2019 2010
Sep 2019–Jul 2020
11-Month
43.15"
(1,096.01mm)
33.96"
(862.58mm)
9.19"
(233.43mm)
117th Driest Driest since: 2018 1934
9th Wettest Wettest since: 2019 1927
Aug 2019–Jul 2020
12-Month
47.20"
(1,198.88mm)
37.46"
(951.48mm)
9.74"
(247.40mm)
118th Driest Driest since: 2018 1934
8th Wettest Wettest since: 2019 1927
Feb 2019–Jul 2020
18-Month
75.42"
(1,915.67mm)
57.89"
(1,470.41mm)
17.53"
(445.26mm)
122nd Driest Driest since: 2018 1931
4th Wettest Wettest since: 2019 2010
Aug 2018–Jul 2020
24-Month
98.48"
(2,501.39mm)
74.90"
(1,902.46mm)
23.58"
(598.93mm)
124th Driest Driest since: 2019 1954
1st Wettest Wettest to Date 2020
Aug 2017–Jul 2020
36-Month
135.85"
(3,450.59mm)
112.32"
(2,852.93mm)
23.53"
(597.66mm)
120th Driest Driest since: 2019 1965
4th Wettest Wettest since: 2011 2010
Aug 2016–Jul 2020
48-Month
178.88"
(4,543.55mm)
149.69"
(3,802.13mm)
29.19"
(741.42mm)
120th Driest Driest since: 2019 1956
3rd Wettest Wettest since: 2011 2011
Aug 2015–Jul 2020
60-Month
222.14"
(5,642.36mm)
187.12"
(4,752.85mm)
35.02"
(889.51mm)
120th Driest Driest since: 2019 1934
2nd Wettest Wettest since: 2011 2011

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published September 2020, retrieved on September 24, 2020 from https://www.ncdc.noaa.gov/cag/