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


Iowa

Precipitation Rankings, April 1978

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Wettest/Driest
Since
Record
April 1978
1-Month
4.64"
(117.86mm)
2.94"
(74.68mm)
1.70"
(43.18mm)
111th Driest Driest since: 1977 1926
15th Wettest Wettest since: 1964 2013
Mar–Apr 1978
2-Month
5.35"
(135.89mm)
4.90"
(124.46mm)
0.45"
(11.43mm)
77th Driest Driest since: 1974 1910
49th Wettest Wettest since: 1977 1991
Feb–Apr 1978
3-Month
6.13"
(155.70mm)
5.92"
(150.37mm)
0.21"
(5.33mm)
71st Driest Driest since: 1974 1910
55th Wettest Wettest since: 1977 1951
Jan–Apr 1978
4-Month
6.72"
(170.69mm)
6.89"
(175.01mm)
-0.17"
(-4.32mm)
54th Driest Driest since: 1972 1934
72nd Wettest Wettest since: 1977 1951
Ties: 1985
Dec 1977–Apr 1978
5-Month
7.78"
(197.61mm)
7.99"
(202.95mm)
-0.21"
(-5.34mm)
53rd Driest Driest since: 1977 1956
72nd Wettest Wettest since: 1976 1973
Nov 1977–Apr 1978
6-Month
9.43"
(239.52mm)
9.74"
(247.40mm)
-0.31"
(-7.88mm)
55th Driest Driest since: 1977 1956
70th Wettest Wettest since: 1976 2016
Oct 1977–Apr 1978
7-Month
13.55"
(344.17mm)
12.05"
(306.07mm)
1.50"
(38.10mm)
83rd Driest Driest since: 1977 1934
42nd Wettest Wettest since: 1976 1973
Sep 1977–Apr 1978
8-Month
18.24"
(463.30mm)
15.75"
(400.05mm)
2.49"
(63.25mm)
91st Driest Driest since: 1977 1956
34th Wettest Wettest since: 1974 2019
Aug 1977–Apr 1978
9-Month
26.44"
(671.58mm)
19.61"
(498.09mm)
6.83"
(173.49mm)
118th Driest Driest since: 1977 1956
7th Wettest Wettest since: 1973 2019
Jul 1977–Apr 1978
10-Month
30.43"
(772.92mm)
23.49"
(596.65mm)
6.94"
(176.27mm)
115th Driest Driest since: 1977 1956
10th Wettest Wettest since: 1973 2019
Jun 1977–Apr 1978
11-Month
33.10"
(840.74mm)
28.09"
(713.49mm)
5.01"
(127.25mm)
107th Driest Driest since: 1977 1956
18th Wettest Wettest since: 1973 2019
May 1977–Apr 1978
12-Month
35.87"
(911.10mm)
32.14"
(816.36mm)
3.73"
(94.74mm)
93rd Driest Driest since: 1977 1956
32nd Wettest Wettest since: 1974 2019
Nov 1976–Apr 1978
18-Month
43.72"
(1,110.49mm)
41.90"
(1,064.26mm)
1.82"
(46.23mm)
76th Driest Driest since: 1977 1956
48th Wettest Wettest since: 1975 1994
May 1976–Apr 1978
24-Month
57.20"
(1,452.88mm)
64.29"
(1,632.97mm)
-7.09"
(-180.09mm)
19th Driest Driest since: 1977 1957
105th Wettest Wettest since: 1976 2017
May 1975–Apr 1978
36-Month
88.35"
(2,244.09mm)
96.34"
(2,447.04mm)
-7.99"
(-202.95mm)
17th Driest Driest since: 1977 1958
106th Wettest Wettest since: 1976 2011
May 1974–Apr 1978
48-Month
122.03"
(3,099.56mm)
128.30"
(3,258.82mm)
-6.27"
(-159.26mm)
26th Driest Driest since: 1959 1957
96th Wettest Wettest since: 1977 2011
May 1973–Apr 1978
60-Month
160.22"
(4,069.59mm)
160.29"
(4,071.37mm)
-0.07"
(-1.78mm)
60th Driest Driest since: 1972 1958
61st Wettest Wettest since: 1977 2011

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published February 2020, retrieved on February 26, 2020 from https://www.ncdc.noaa.gov/cag/