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 1977

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 1977
1-Month
2.77"
(70.36mm)
4.05"
(102.87mm)
-1.28"
(-32.51mm)
25th Driest Driest since: 1968 1934
101st Wettest Wettest since: 1976 2013
Apr–May 1977
2-Month
5.30"
(134.62mm)
6.99"
(177.55mm)
-1.69"
(-42.93mm)
25th Driest Driest since: 1971 1934
101st Wettest Wettest since: 1976 2013
Mar–May 1977
3-Month
9.20"
(233.68mm)
8.95"
(227.33mm)
0.25"
(6.35mm)
68th Driest Driest since: 1971 1934
58th Wettest Wettest since: 1976 2013
Feb–May 1977
4-Month
9.71"
(246.63mm)
9.96"
(252.98mm)
-0.25"
(-6.35mm)
54th Driest Driest since: 1971 1934
72nd Wettest Wettest since: 1976 2013
Jan–May 1977
5-Month
10.21"
(259.33mm)
10.94"
(277.88mm)
-0.73"
(-18.55mm)
46th Driest Driest since: 1971 1934
80th Wettest Wettest since: 1976 2013
Dec 1976–May 1977
6-Month
10.52"
(267.21mm)
12.04"
(305.82mm)
-1.52"
(-38.61mm)
32nd Driest Driest since: 1971 1934
93rd Wettest Wettest since: 1976 2013
Nov 1976–May 1977
7-Month
10.62"
(269.75mm)
13.78"
(350.01mm)
-3.16"
(-80.26mm)
19th Driest Driest since: 1968 1934
106th Wettest Wettest since: 1976 2013
Oct 1976–May 1977
8-Month
12.15"
(308.61mm)
16.10"
(408.94mm)
-3.95"
(-100.33mm)
12th Driest Driest since: 1956 1934
113th Wettest Wettest since: 1976 2019
Sep 1976–May 1977
9-Month
13.62"
(345.95mm)
19.79"
(502.67mm)
-6.17"
(-156.72mm)
7th Driest Driest since: 1956 1934
118th Wettest Wettest since: 1976 2019
Aug 1976–May 1977
10-Month
15.10"
(383.54mm)
23.65"
(600.71mm)
-8.55"
(-217.17mm)
3rd Driest Driest since: 1956 1934
122nd Wettest Wettest since: 1976 2019
Jul 1976–May 1977
11-Month
17.65"
(448.31mm)
27.54"
(699.52mm)
-9.89"
(-251.21mm)
2nd Driest Driest since: 1934 1934
123rd Wettest Wettest since: 1976 2019
Jun 1976–May 1977
12-Month
20.90"
(530.86mm)
32.14"
(816.36mm)
-11.24"
(-285.50mm)
3rd Driest Driest since: 1956 1934
122nd Wettest Wettest since: 1976 2019
Dec 1975–May 1977
18-Month
34.57"
(878.08mm)
44.20"
(1,122.68mm)
-9.63"
(-244.60mm)
7th Driest Driest since: 1956 1934
117th Wettest Wettest since: 1976 2019
Jun 1975–May 1977
24-Month
51.95"
(1,319.53mm)
64.29"
(1,632.97mm)
-12.34"
(-313.44mm)
6th Driest Driest since: 1957 1957
118th Wettest Wettest since: 1976 2011
Jun 1974–May 1977
36-Month
82.66"
(2,099.56mm)
96.33"
(2,446.78mm)
-13.67"
(-347.22mm)
6th Driest Driest since: 1958 1958
117th Wettest Wettest since: 1976 2011
Jun 1973–May 1977
48-Month
121.08"
(3,075.43mm)
128.31"
(3,259.07mm)
-7.23"
(-183.64mm)
25th Driest Driest since: 1959 1957
97th Wettest Wettest since: 1976 2011
Jun 1972–May 1977
60-Month
165.19"
(4,195.83mm)
160.32"
(4,072.13mm)
4.87"
(123.70mm)
77th Driest Driest since: 1972 1958
44th Wettest Wettest since: 1976 2019

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2019, retrieved on November 13, 2019 from https://www.ncdc.noaa.gov/cag/