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 October 2019. For more information, please see Climatological Rankings.


Illinois

Precipitation Rankings, May 2017

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
May 2017
1-Month
5.17"
(131.32mm)
4.08"
(103.63mm)
1.09"
(27.69mm)
93rd Driest Driest since: 2016 1934
33rd Wettest Wettest since: 2015 1995
Ties: 1961
Apr–May 2017
2-Month
12.05"
(306.07mm)
7.80"
(198.12mm)
4.25"
(107.95mm)
115th Driest Driest since: 2016 1934
11th Wettest Wettest since: 2013 1927
Mar–May 2017
3-Month
15.61"
(396.49mm)
10.89"
(276.61mm)
4.72"
(119.88mm)
114th Driest Driest since: 2016 1934
12th Wettest Wettest since: 2013 1927
Feb–May 2017
4-Month
16.34"
(415.04mm)
12.75"
(323.85mm)
3.59"
(91.19mm)
106th Driest Driest since: 2016 1934
20th Wettest Wettest since: 2013 2019
Ties: 1938
Jan–May 2017
5-Month
18.47"
(469.14mm)
14.87"
(377.70mm)
3.60"
(91.44mm)
102nd Driest Driest since: 2016 1934
24th Wettest Wettest since: 2013 2019
Dec 2016–May 2017
6-Month
19.87"
(504.70mm)
17.20"
(436.88mm)
2.67"
(67.82mm)
95th Driest Driest since: 2016 1934
30th Wettest Wettest since: 2013 2019
Nov 2016–May 2017
7-Month
22.46"
(570.48mm)
19.95"
(506.73mm)
2.51"
(63.75mm)
92nd Driest Driest since: 2015 1934
33rd Wettest Wettest since: 2016 2019
Oct 2016–May 2017
8-Month
24.84"
(630.94mm)
22.74"
(577.60mm)
2.10"
(53.34mm)
86th Driest Driest since: 2015 1934
39th Wettest Wettest since: 2016 2019
Sep 2016–May 2017
9-Month
28.26"
(717.80mm)
26.24"
(666.50mm)
2.02"
(51.30mm)
86th Driest Driest since: 2015 1934
39th Wettest Wettest since: 2016 1927
Ties: 1975
Aug 2016–May 2017
10-Month
35.03"
(889.76mm)
29.74"
(755.40mm)
5.29"
(134.36mm)
104th Driest Driest since: 2016 1934
21st Wettest Wettest since: 2013 1927
Jul 2016–May 2017
11-Month
41.93"
(1,065.02mm)
33.37"
(847.60mm)
8.56"
(217.42mm)
118th Driest Driest since: 2016 1934
7th Wettest Wettest since: 2009 1927
Jun 2016–May 2017
12-Month
45.06"
(1,144.52mm)
37.43"
(950.72mm)
7.63"
(193.80mm)
110th Driest Driest since: 2015 1934
15th Wettest Wettest since: 2016 1927
Dec 2015–May 2017
18-Month
64.89"
(1,648.21mm)
54.62"
(1,387.35mm)
10.27"
(260.86mm)
112th Driest Driest since: 2016 1902
12th Wettest Wettest since: 2010 2009
Jun 2015–May 2017
24-Month
92.94"
(2,360.68mm)
74.85"
(1,901.19mm)
18.09"
(459.49mm)
121st Driest Driest since: 2016 1941
3rd Wettest Wettest since: 2010 1974
Jun 2014–May 2017
36-Month
134.47"
(3,415.54mm)
112.24"
(2,850.90mm)
22.23"
(564.64mm)
118th Driest Driest since: 2016 1902
5th Wettest Wettest since: 2011 2011
Jun 2013–May 2017
48-Month
168.23"
(4,273.04mm)
149.63"
(3,800.60mm)
18.60"
(472.44mm)
107th Driest Driest since: 2016 1956
15th Wettest Wettest since: 2013 2011
Jun 2012–May 2017
60-Month
209.86"
(5,330.44mm)
187.07"
(4,751.58mm)
22.79"
(578.86mm)
113th Driest Driest since: 2016 1934
8th Wettest Wettest since: 2013 2011

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2019, retrieved on November 22, 2019 from https://www.ncdc.noaa.gov/cag/