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


Iowa

Precipitation Rankings, April 2018

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Wettest/Driest
Since
Record
April 2018
1-Month
1.54"
(39.12mm)
2.94"
(74.68mm)
-1.40"
(-35.56mm)
14th Driest Driest since: 1980 1926
113th Wettest Wettest since: 2017 2013
Mar–Apr 2018
2-Month
3.82"
(97.03mm)
4.90"
(124.46mm)
-1.08"
(-27.43mm)
31st Driest Driest since: 2000 1910
96th Wettest Wettest since: 2017 1991
Feb–Apr 2018
3-Month
5.36"
(136.14mm)
5.92"
(150.37mm)
-0.56"
(-14.23mm)
42nd Driest Driest since: 2015 1910
85th Wettest Wettest since: 2017 1951
Jan–Apr 2018
4-Month
6.38"
(162.05mm)
6.89"
(175.01mm)
-0.51"
(-12.96mm)
50th Driest Driest since: 2015 1934
77th Wettest Wettest since: 2017 1951
Dec 2017–Apr 2018
5-Month
6.77"
(171.96mm)
7.99"
(202.95mm)
-1.22"
(-30.99mm)
30th Driest Driest since: 2015 1956
96th Wettest Wettest since: 2017 1973
Nov 2017–Apr 2018
6-Month
7.18"
(182.37mm)
9.74"
(247.40mm)
-2.56"
(-65.03mm)
14th Driest Driest since: 2003 1956
112th Wettest Wettest since: 2017 2016
Oct 2017–Apr 2018
7-Month
12.44"
(315.98mm)
12.05"
(306.07mm)
0.39"
(9.91mm)
70th Driest Driest since: 2015 1934
56th Wettest Wettest since: 2017 1973
Sep 2017–Apr 2018
8-Month
14.75"
(374.65mm)
15.75"
(400.05mm)
-1.00"
(-25.40mm)
51st Driest Driest since: 2014 1956
75th Wettest Wettest since: 2017 2019
Aug 2017–Apr 2018
9-Month
18.58"
(471.93mm)
19.61"
(498.09mm)
-1.03"
(-26.16mm)
50th Driest Driest since: 2014 1956
76th Wettest Wettest since: 2017 2019
Jul 2017–Apr 2018
10-Month
21.52"
(546.61mm)
23.49"
(596.65mm)
-1.97"
(-50.04mm)
38th Driest Driest since: 2014 1956
88th Wettest Wettest since: 2017 2019
Jun 2017–Apr 2018
11-Month
25.02"
(635.51mm)
28.09"
(713.49mm)
-3.07"
(-77.98mm)
30th Driest Driest since: 2014 1956
96th Wettest Wettest since: 2017 2019
May 2017–Apr 2018
12-Month
29.82"
(757.43mm)
32.14"
(816.36mm)
-2.32"
(-58.93mm)
43rd Driest Driest since: 2013 1956
83rd Wettest Wettest since: 2017 2019
Nov 2016–Apr 2018
18-Month
41.65"
(1,057.91mm)
41.90"
(1,064.26mm)
-0.25"
(-6.35mm)
57th Driest Driest since: 2013 1956
68th Wettest Wettest since: 2017 1994
May 2016–Apr 2018
24-Month
69.90"
(1,775.46mm)
64.29"
(1,632.97mm)
5.61"
(142.49mm)
93rd Driest Driest since: 2015 1957
32nd Wettest Wettest since: 2017 2020
May 2015–Apr 2018
36-Month
113.81"
(2,890.77mm)
96.34"
(2,447.04mm)
17.47"
(443.73mm)
112th Driest Driest since: 2016 1958
12th Wettest Wettest since: 2017 2011
May 2014–Apr 2018
48-Month
150.67"
(3,827.02mm)
128.30"
(3,258.82mm)
22.37"
(568.20mm)
115th Driest Driest since: 2016 1957
8th Wettest Wettest since: 2017 2011
May 2013–Apr 2018
60-Month
181.76"
(4,616.70mm)
160.29"
(4,071.37mm)
21.47"
(545.33mm)
111th Driest Driest since: 2017 1958
11th Wettest Wettest since: 2013 2020

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published July 2020, retrieved on August 5, 2020 from https://www.ncdc.noaa.gov/cag/