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.


Iowa

Precipitation Rankings, January 1939

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
January 1939
1-Month
0.86"
(21.84mm)
0.98"
(24.89mm)
-0.12"
(-3.05mm)
61st Driest Driest since: 1934 1981
65th Wettest Wettest since: 1938 1949
Ties: 1895, 1914
Dec 1938–Jan 1939
2-Month
1.55"
(39.37mm)
2.08"
(52.83mm)
-0.53"
(-13.46mm)
34th Driest Driest since: 1931 2003
91st Wettest Wettest since: 1938 2016
Nov 1938–Jan 1939
3-Month
4.25"
(107.95mm)
3.82"
(97.03mm)
0.43"
(10.92mm)
78th Driest Driest since: 1938 2003
47th Wettest Wettest since: 1937 1932
Oct 1938–Jan 1939
4-Month
5.10"
(129.54mm)
6.13"
(155.70mm)
-1.03"
(-26.16mm)
41st Driest Driest since: 1938 1911
84th Wettest Wettest since: 1937 1932
Sep 1938–Jan 1939
5-Month
11.05"
(280.67mm)
9.83"
(249.68mm)
1.22"
(30.99mm)
82nd Driest Driest since: 1938 1977
43rd Wettest Wettest since: 1937 1932
Ties: 1949
Aug 1938–Jan 1939
6-Month
14.55"
(369.57mm)
13.69"
(347.73mm)
0.86"
(21.84mm)
74th Driest Driest since: 1938 1977
51st Wettest Wettest since: 1937 2019
Jul 1938–Jan 1939
7-Month
19.12"
(485.65mm)
17.57"
(446.28mm)
1.55"
(39.37mm)
87th Driest Driest since: 1938 1977
38th Wettest Wettest since: 1935 2019
Ties: 2015
Jun 1938–Jan 1939
8-Month
23.69"
(601.73mm)
22.18"
(563.37mm)
1.51"
(38.36mm)
79th Driest Driest since: 1938 1977
46th Wettest Wettest since: 1936 2019
May 1938–Jan 1939
9-Month
29.18"
(741.17mm)
26.22"
(665.99mm)
2.96"
(75.18mm)
90th Driest Driest since: 1938 1977
35th Wettest Wettest since: 1932 1994
Apr 1938–Jan 1939
10-Month
32.80"
(833.12mm)
29.17"
(740.92mm)
3.63"
(92.20mm)
92nd Driest Driest since: 1938 1911
33rd Wettest Wettest since: 1932 1994
Mar 1938–Jan 1939
11-Month
35.13"
(892.30mm)
31.14"
(790.96mm)
3.99"
(101.34mm)
93rd Driest Driest since: 1938 1911
32nd Wettest Wettest since: 1932 1994
Feb 1938–Jan 1939
12-Month
36.08"
(916.43mm)
32.15"
(816.61mm)
3.93"
(99.82mm)
91st Driest Driest since: 1938 1911
34th Wettest Wettest since: 1929 1994
Aug 1937–Jan 1939
18-Month
46.37"
(1,177.80mm)
45.86"
(1,164.84mm)
0.51"
(12.96mm)
65th Driest Driest since: 1938 1957
59th Wettest Wettest since: 1936 1994
Feb 1937–Jan 1939
24-Month
62.44"
(1,585.98mm)
64.28"
(1,632.71mm)
-1.84"
(-46.73mm)
50th Driest Driest since: 1938 1990
74th Wettest Wettest since: 1933 2009
Feb 1936–Jan 1939
36-Month
88.56"
(2,249.42mm)
96.29"
(2,445.77mm)
-7.73"
(-196.35mm)
17th Driest Driest since: 1938 1958
106th Wettest Wettest since: 1934 2011
Feb 1935–Jan 1939
48-Month
121.62"
(3,089.15mm)
128.27"
(3,258.06mm)
-6.65"
(-168.91mm)
27th Driest Driest since: 1938 1959
95th Wettest Wettest since: 1932 2011
Ties: 1978
Feb 1934–Jan 1939
60-Month
148.64"
(3,775.46mm)
160.30"
(4,071.62mm)
-11.66"
(-296.16mm)
14th Driest Driest since: 1938 1957
107th Wettest Wettest since: 1936 2011

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published January 2020, retrieved on January 28, 2020 from https://www.ncdc.noaa.gov/cag/