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 2021. For more information, please see Climatological Rankings.


Iowa

Precipitation Rankings, January 1940

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
January 1940
1-Month
0.81"
(20.57mm)
0.98"
(24.89mm)
-0.17"
(-4.32mm)
54th Driest Driest since: 1931 1981
74th Wettest Wettest since: 1939 1949
Ties: 1913, 1923
Dec 1939–Jan 1940
2-Month
1.41"
(35.81mm)
2.08"
(52.83mm)
-0.67"
(-17.02mm)
24th Driest Driest since: 1931 2003
103rd Wettest Wettest since: 1939 2016
Ties: 2018
Nov 1939–Jan 1940
3-Month
1.90"
(48.26mm)
3.82"
(97.03mm)
-1.92"
(-48.77mm)
12th Driest Driest since: 1918 2003
115th Wettest Wettest since: 1939 1932
Oct 1939–Jan 1940
4-Month
3.38"
(85.85mm)
6.13"
(155.70mm)
-2.75"
(-69.85mm)
9th Driest Driest since: 1924 1911
118th Wettest Wettest since: 1939 1932
Sep 1939–Jan 1940
5-Month
4.22"
(107.19mm)
9.83"
(249.68mm)
-5.61"
(-142.49mm)
2nd Driest Driest to Date 1977
125th Wettest Wettest since: 1939 1932
Aug 1939–Jan 1940
6-Month
8.89"
(225.81mm)
13.69"
(347.73mm)
-4.80"
(-121.92mm)
10th Driest Driest since: 1918 1977
117th Wettest Wettest since: 1939 2019
Jul 1939–Jan 1940
7-Month
12.09"
(307.09mm)
17.57"
(446.28mm)
-5.48"
(-139.19mm)
10th Driest Driest since: 1931 1977
117th Wettest Wettest since: 1939 2019
Jun 1939–Jan 1940
8-Month
17.01"
(432.05mm)
22.18"
(563.37mm)
-5.17"
(-131.32mm)
13th Driest Driest since: 1938 1977
114th Wettest Wettest since: 1939 2019
May 1939–Jan 1940
9-Month
19.05"
(483.87mm)
26.22"
(665.99mm)
-7.17"
(-182.12mm)
8th Driest Driest since: 1911 1977
119th Wettest Wettest since: 1939 1994
Apr 1939–Jan 1940
10-Month
21.05"
(534.67mm)
29.17"
(740.92mm)
-8.12"
(-206.25mm)
6th Driest Driest since: 1911 1911
121st Wettest Wettest since: 1939 1994
Mar 1939–Jan 1940
11-Month
22.68"
(576.07mm)
31.14"
(790.96mm)
-8.46"
(-214.89mm)
5th Driest Driest since: 1911 1911
122nd Wettest Wettest since: 1939 1994
Feb 1939–Jan 1940
12-Month
24.45"
(621.03mm)
32.15"
(816.61mm)
-7.70"
(-195.58mm)
7th Driest Driest since: 1934 1911
120th Wettest Wettest since: 1939 1994
Aug 1938–Jan 1940
18-Month
39.00"
(990.60mm)
45.86"
(1,164.84mm)
-6.86"
(-174.24mm)
18th Driest Driest since: 1935 1957
108th Wettest Wettest since: 1939 2020
Feb 1938–Jan 1940
24-Month
60.53"
(1,537.46mm)
64.28"
(1,632.71mm)
-3.75"
(-95.25mm)
38th Driest Driest since: 1938 1990
88th Wettest Wettest since: 1939 2020
Feb 1937–Jan 1940
36-Month
86.89"
(2,207.01mm)
96.29"
(2,445.77mm)
-9.40"
(-238.76mm)
16th Driest Driest since: 1938 1958
109th Wettest Wettest since: 1939 2011
Feb 1936–Jan 1940
48-Month
113.01"
(2,870.45mm)
128.27"
(3,258.06mm)
-15.26"
(-387.61mm)
7th Driest Driest since: 1938 1959
117th Wettest Wettest since: 1939 2011
Feb 1935–Jan 1940
60-Month
146.07"
(3,710.18mm)
160.30"
(4,071.62mm)
-14.23"
(-361.44mm)
12th Driest Driest since: 1938 1957
111th Wettest Wettest since: 1939 2011

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2021, retrieved on November 28, 2021 from https://www.ncdc.noaa.gov/cag/