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.


Iowa

Precipitation Rankings, May 1909

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 1909
1-Month
4.37"
(111.00mm)
4.05"
(102.87mm)
0.32"
(8.13mm)
75th Driest Driest since: 1907 1934
51st Wettest Wettest since: 1908 2013
Apr–May 1909
2-Month
8.86"
(225.04mm)
6.99"
(177.55mm)
1.87"
(47.49mm)
93rd Driest Driest since: 1907 1934
33rd Wettest Wettest since: 1908 2013
Mar–May 1909
3-Month
10.37"
(263.40mm)
8.95"
(227.33mm)
1.42"
(36.07mm)
89th Driest Driest since: 1907 1934
37th Wettest Wettest since: 1908 2013
Feb–May 1909
4-Month
11.93"
(303.02mm)
9.96"
(252.98mm)
1.97"
(50.04mm)
91st Driest Driest since: 1907 1934
35th Wettest Wettest since: 1908 2013
Jan–May 1909
5-Month
13.60"
(345.44mm)
10.94"
(277.88mm)
2.66"
(67.56mm)
96th Driest Driest since: 1907 1934
30th Wettest Wettest since: 1908 2013
Dec 1908–May 1909
6-Month
14.18"
(360.17mm)
12.04"
(305.82mm)
2.14"
(54.35mm)
90th Driest Driest since: 1907 1934
35th Wettest Wettest since: 1908 2013
Nov 1908–May 1909
7-Month
15.72"
(399.29mm)
13.78"
(350.01mm)
1.94"
(49.28mm)
89th Driest Driest since: 1907 1934
36th Wettest Wettest since: 1908 2013
Oct 1908–May 1909
8-Month
19.06"
(484.12mm)
16.10"
(408.94mm)
2.96"
(75.18mm)
96th Driest Driest since: 1908 1934
29th Wettest Wettest since: 1903 2019
Sep 1908–May 1909
9-Month
20.31"
(515.87mm)
19.79"
(502.67mm)
0.52"
(13.20mm)
67th Driest Driest since: 1907 1934
58th Wettest Wettest since: 1908 2019
Aug 1908–May 1909
10-Month
25.06"
(636.52mm)
23.65"
(600.71mm)
1.41"
(35.81mm)
77th Driest Driest since: 1908 1934
48th Wettest Wettest since: 1906 2019
Jul 1908–May 1909
11-Month
28.72"
(729.49mm)
27.54"
(699.52mm)
1.18"
(29.97mm)
72nd Driest Driest since: 1907 1934
53rd Wettest Wettest since: 1908 2019
Jun 1908–May 1909
12-Month
34.21"
(868.93mm)
32.14"
(816.36mm)
2.07"
(52.57mm)
78th Driest Driest since: 1907 1934
47th Wettest Wettest since: 1908 2019
Dec 1907–May 1909
18-Month
49.32"
(1,252.73mm)
44.20"
(1,122.68mm)
5.12"
(130.05mm)
98th Driest Driest since: 1908 1934
26th Wettest Wettest since: 1903 2019
Jun 1907–May 1909
24-Month
71.45"
(1,814.83mm)
64.29"
(1,632.97mm)
7.16"
(181.86mm)
100th Driest Driest since: 1908 1957
24th Wettest Wettest since: 1904 2011
Jun 1906–May 1909
36-Month
100.46"
(2,551.68mm)
96.33"
(2,446.78mm)
4.13"
(104.90mm)
82nd Driest Driest since: 1908 1958
41st Wettest Wettest since: 1905 2011
Jun 1905–May 1909
48-Month
133.95"
(3,402.33mm)
128.31"
(3,259.07mm)
5.64"
(143.26mm)
83rd Driest Driest since: 1908 1957
39th Wettest Wettest since: 1906 2011
Jun 1904–May 1909
60-Month
164.63"
(4,181.60mm)
160.32"
(4,072.13mm)
4.31"
(109.47mm)
74th Driest Driest since: 1908 1958
47th Wettest Wettest since: 1907 2019

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2019, retrieved on November 19, 2019 from https://www.ncdc.noaa.gov/cag/