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 August 2020. For more information, please see Climatological Rankings.


Iowa

Precipitation Rankings, May 2015

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Top 1/3
  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Wettest/Driest
Since
Record
May 2015
1-Month
5.06"
(128.52mm)
4.05"
(102.87mm)
1.01"
(25.65mm)
96th Driest Driest since: 2014 1934
31st Wettest Wettest since: 2013 2013
Apr–May 2015
2-Month
8.43"
(214.12mm)
6.99"
(177.55mm)
1.44"
(36.57mm)
90th Driest Driest since: 2014 1934
37th Wettest Wettest since: 2013 2013
Mar–May 2015
3-Month
8.99"
(228.35mm)
8.95"
(227.33mm)
0.04"
(1.02mm)
61st Driest Driest since: 2014 1934
66th Wettest Wettest since: 2013 2013
Ties: 1962
Feb–May 2015
4-Month
10.10"
(256.54mm)
9.96"
(252.98mm)
0.14"
(3.56mm)
68th Driest Driest since: 2014 1934
59th Wettest Wettest since: 2013 2013
Jan–May 2015
5-Month
10.62"
(269.75mm)
10.94"
(277.88mm)
-0.32"
(-8.13mm)
54th Driest Driest since: 2014 1934
73rd Wettest Wettest since: 2013 2013
Ties: 1997
Dec 2014–May 2015
6-Month
11.72"
(297.69mm)
12.04"
(305.82mm)
-0.32"
(-8.13mm)
55th Driest Driest since: 2014 1934
71st Wettest Wettest since: 2013 2013
Nov 2014–May 2015
7-Month
12.48"
(316.99mm)
13.78"
(350.01mm)
-1.30"
(-33.02mm)
39th Driest Driest since: 2003 1934
87th Wettest Wettest since: 2014 2013
Oct 2014–May 2015
8-Month
15.65"
(397.51mm)
16.10"
(408.94mm)
-0.45"
(-11.43mm)
52nd Driest Driest since: 2014 1934
74th Wettest Wettest since: 2013 2019
Ties: 1916
Sep 2014–May 2015
9-Month
20.00"
(508.00mm)
19.79"
(502.67mm)
0.21"
(5.33mm)
64th Driest Driest since: 2014 1934
62nd Wettest Wettest since: 2013 2019
Aug 2014–May 2015
10-Month
25.92"
(658.37mm)
23.65"
(600.71mm)
2.27"
(57.66mm)
87th Driest Driest since: 2014 1934
39th Wettest Wettest since: 2013 2019
Jul 2014–May 2015
11-Month
29.22"
(742.19mm)
27.54"
(699.52mm)
1.68"
(42.67mm)
77th Driest Driest since: 2014 1934
49th Wettest Wettest since: 2013 2019
Jun 2014–May 2015
12-Month
38.88"
(987.55mm)
32.14"
(816.36mm)
6.74"
(171.19mm)
111th Driest Driest since: 2014 1934
15th Wettest Wettest since: 2011 2019
Dec 2013–May 2015
18-Month
49.93"
(1,268.22mm)
44.20"
(1,122.68mm)
5.73"
(145.54mm)
100th Driest Driest since: 2014 1934
25th Wettest Wettest since: 2011 2019
Jun 2013–May 2015
24-Month
64.36"
(1,634.74mm)
64.29"
(1,632.97mm)
0.07"
(1.77mm)
60th Driest Driest since: 2014 1957
65th Wettest Wettest since: 2012 2020
Jun 2012–May 2015
36-Month
97.79"
(2,483.87mm)
96.33"
(2,446.78mm)
1.46"
(37.09mm)
67th Driest Driest since: 2014 1958
57th Wettest Wettest since: 2013 2011
Jun 2011–May 2015
48-Month
128.55"
(3,265.17mm)
128.31"
(3,259.07mm)
0.24"
(6.10mm)
60th Driest Driest since: 2006 1957
63rd Wettest Wettest since: 2014 2011
Jun 2010–May 2015
60-Month
173.37"
(4,403.60mm)
160.32"
(4,072.13mm)
13.05"
(331.47mm)
96th Driest Driest since: 2007 1958
26th Wettest Wettest since: 2014 2019

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published September 2020, retrieved on September 29, 2020 from https://www.ncdc.noaa.gov/cag/