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


Iowa

Precipitation Rankings, May 2020

View Period (Months):All1234567891011121824364860
Download: xml csv json
  • Record Driest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Wettest/Driest
Since
Record
May 2020
1-Month
4.51"
(114.55mm)
4.05"
(102.87mm)
0.46"
(11.68mm)
77th Driest Driest since: 2016 1934
50th Wettest Wettest since: 2019 2013
Apr–May 2020
2-Month
6.15"
(156.21mm)
6.99"
(177.55mm)
-0.84"
(-21.34mm)
46th Driest Driest since: 2000 1934
81st Wettest Wettest since: 2019 2013
Mar–May 2020
3-Month
9.05"
(229.87mm)
8.95"
(227.33mm)
0.10"
(2.54mm)
64th Driest Driest since: 2018 1934
63rd Wettest Wettest since: 2019 2013
Feb–May 2020
4-Month
9.48"
(240.79mm)
9.96"
(252.98mm)
-0.48"
(-12.19mm)
48th Driest Driest since: 2000 1934
79th Wettest Wettest since: 2019 2013
Jan–May 2020
5-Month
10.85"
(275.59mm)
10.94"
(277.88mm)
-0.09"
(-2.29mm)
58th Driest Driest since: 2015 1934
69th Wettest Wettest since: 2019 2013
Ties: 1953
Dec 2019–May 2020
6-Month
12.13"
(308.10mm)
12.04"
(305.82mm)
0.09"
(2.28mm)
64th Driest Driest since: 2018 1934
62nd Wettest Wettest since: 2019 2013
Nov 2019–May 2020
7-Month
13.62"
(345.95mm)
13.78"
(350.01mm)
-0.16"
(-4.06mm)
56th Driest Driest since: 2018 1934
70th Wettest Wettest since: 2019 2013
Oct 2019–May 2020
8-Month
18.40"
(467.36mm)
16.10"
(408.94mm)
2.30"
(58.42mm)
87th Driest Driest since: 2018 1934
39th Wettest Wettest since: 2019 2019
Sep 2019–May 2020
9-Month
24.61"
(625.09mm)
19.79"
(502.67mm)
4.82"
(122.42mm)
106th Driest Driest since: 2018 1934
20th Wettest Wettest since: 2019 2019
Aug 2019–May 2020
10-Month
28.14"
(714.76mm)
23.65"
(600.71mm)
4.49"
(114.05mm)
102nd Driest Driest since: 2018 1934
24th Wettest Wettest since: 2019 2019
Jul 2019–May 2020
11-Month
31.52"
(800.61mm)
27.54"
(699.52mm)
3.98"
(101.09mm)
99th Driest Driest since: 2018 1934
27th Wettest Wettest since: 2019 2019
Jun 2019–May 2020
12-Month
35.43"
(899.92mm)
32.14"
(816.36mm)
3.29"
(83.56mm)
89th Driest Driest since: 2018 1934
37th Wettest Wettest since: 2019 2019
Dec 2018–May 2020
18-Month
54.58"
(1,386.33mm)
44.20"
(1,122.68mm)
10.38"
(263.65mm)
111th Driest Driest since: 2018 1934
14th Wettest Wettest since: 2019 2019
Jun 2018–May 2020
24-Month
86.48"
(2,196.59mm)
64.29"
(1,632.97mm)
22.19"
(563.62mm)
124th Driest Driest since: 2019 1957
1st Wettest Wettest to Date 2020
Jun 2017–May 2020
36-Month
116.20"
(2,951.48mm)
96.33"
(2,446.78mm)
19.87"
(504.70mm)
117th Driest Driest since: 2018 1958
7th Wettest Wettest since: 2019 2011
Jun 2016–May 2020
48-Month
156.72"
(3,980.69mm)
128.31"
(3,259.07mm)
28.41"
(721.62mm)
119th Driest Driest since: 2018 1957
4th Wettest Wettest since: 2019 2011
Jun 2015–May 2020
60-Month
199.93"
(5,078.22mm)
160.32"
(4,072.13mm)
39.61"
(1,006.09mm)
119th Driest Driest since: 2018 1958
3rd Wettest Wettest since: 2019 2019

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published August 2020, retrieved on August 6, 2020 from https://www.ncdc.noaa.gov/cag/