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, May 1940

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
May 1940
1-Month
3.39"
(86.11mm)
4.08"
(103.63mm)
-0.69"
(-17.52mm)
44th Driest Driest since: 1939 1934
82nd Wettest Wettest since: 1938 1995
Apr–May 1940
2-Month
7.34"
(186.44mm)
7.80"
(198.12mm)
-0.46"
(-11.68mm)
53rd Driest Driest since: 1939 1934
73rd Wettest Wettest since: 1938 1927
Mar–May 1940
3-Month
9.30"
(236.22mm)
10.89"
(276.61mm)
-1.59"
(-40.39mm)
35th Driest Driest since: 1937 1934
91st Wettest Wettest since: 1939 1927
Feb–May 1940
4-Month
10.85"
(275.59mm)
12.75"
(323.85mm)
-1.90"
(-48.26mm)
30th Driest Driest since: 1937 1934
96th Wettest Wettest since: 1939 2019
Jan–May 1940
5-Month
12.28"
(311.91mm)
14.87"
(377.70mm)
-2.59"
(-65.79mm)
22nd Driest Driest since: 1936 1934
104th Wettest Wettest since: 1939 2019
Dec 1939–May 1940
6-Month
13.39"
(340.11mm)
17.20"
(436.88mm)
-3.81"
(-96.77mm)
14th Driest Driest since: 1936 1934
111th Wettest Wettest since: 1939 2019
Ties: 1926
Nov 1939–May 1940
7-Month
14.72"
(373.89mm)
19.95"
(506.73mm)
-5.23"
(-132.84mm)
10th Driest Driest since: 1934 1934
115th Wettest Wettest since: 1939 2019
Oct 1939–May 1940
8-Month
16.90"
(429.26mm)
22.74"
(577.60mm)
-5.84"
(-148.34mm)
7th Driest Driest since: 1934 1934
118th Wettest Wettest since: 1939 2019
Sep 1939–May 1940
9-Month
17.62"
(447.55mm)
26.24"
(666.50mm)
-8.62"
(-218.95mm)
3rd Driest Driest since: 1934 1934
122nd Wettest Wettest since: 1939 1927
Aug 1939–May 1940
10-Month
22.42"
(569.47mm)
29.74"
(755.40mm)
-7.32"
(-185.93mm)
6th Driest Driest since: 1934 1934
119th Wettest Wettest since: 1939 1927
Jul 1939–May 1940
11-Month
25.95"
(659.13mm)
33.37"
(847.60mm)
-7.42"
(-188.47mm)
8th Driest Driest since: 1934 1934
117th Wettest Wettest since: 1939 1927
Jun 1939–May 1940
12-Month
31.13"
(790.70mm)
37.43"
(950.72mm)
-6.30"
(-160.02mm)
14th Driest Driest since: 1934 1934
111th Wettest Wettest since: 1939 1927
Dec 1938–May 1940
18-Month
49.75"
(1,263.65mm)
54.62"
(1,387.35mm)
-4.87"
(-123.70mm)
28th Driest Driest since: 1937 1902
96th Wettest Wettest since: 1939 2009
Jun 1938–May 1940
24-Month
69.79"
(1,772.67mm)
74.85"
(1,901.19mm)
-5.06"
(-128.52mm)
27th Driest Driest since: 1937 1941
97th Wettest Wettest since: 1939 1974
Jun 1937–May 1940
36-Month
108.85"
(2,764.79mm)
112.24"
(2,850.90mm)
-3.39"
(-86.11mm)
36th Driest Driest since: 1938 1902
87th Wettest Wettest since: 1939 2011
Jun 1936–May 1940
48-Month
145.89"
(3,705.61mm)
149.63"
(3,800.60mm)
-3.74"
(-94.99mm)
41st Driest Driest since: 1937 1956
81st Wettest Wettest since: 1939 2011
Jun 1935–May 1940
60-Month
177.88"
(4,518.15mm)
187.07"
(4,751.58mm)
-9.19"
(-233.43mm)
23rd Driest Driest since: 1938 1934
98th Wettest Wettest since: 1939 2011

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published January 2020, retrieved on January 25, 2020 from https://www.ncdc.noaa.gov/cag/