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 September 2019. For more information, please see Climatological Rankings.


Iowa

Precipitation Rankings, May 1970

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 1970
1-Month
4.95"
(125.73mm)
4.05"
(102.87mm)
0.90"
(22.86mm)
92nd Driest Driest since: 1969 1934
34th Wettest Wettest since: 1962 2013
Apr–May 1970
2-Month
7.26"
(184.40mm)
6.99"
(177.55mm)
0.27"
(6.85mm)
65th Driest Driest since: 1969 1934
61st Wettest Wettest since: 1965 2013
Mar–May 1970
3-Month
9.46"
(240.28mm)
8.95"
(227.33mm)
0.51"
(12.95mm)
74th Driest Driest since: 1969 1934
52nd Wettest Wettest since: 1965 2013
Ties: 1972
Feb–May 1970
4-Month
9.63"
(244.60mm)
9.96"
(252.98mm)
-0.33"
(-8.38mm)
50th Driest Driest since: 1969 1934
76th Wettest Wettest since: 1965 2013
Jan–May 1970
5-Month
9.90"
(251.46mm)
10.94"
(277.88mm)
-1.04"
(-26.42mm)
40th Driest Driest since: 1968 1934
86th Wettest Wettest since: 1969 2013
Dec 1969–May 1970
6-Month
11.36"
(288.54mm)
12.04"
(305.82mm)
-0.68"
(-17.28mm)
45th Driest Driest since: 1968 1934
80th Wettest Wettest since: 1969 2013
Nov 1969–May 1970
7-Month
11.63"
(295.40mm)
13.78"
(350.01mm)
-2.15"
(-54.61mm)
27th Driest Driest since: 1968 1934
98th Wettest Wettest since: 1969 2013
Oct 1969–May 1970
8-Month
15.24"
(387.10mm)
16.10"
(408.94mm)
-0.86"
(-21.84mm)
48th Driest Driest since: 1968 1934
77th Wettest Wettest since: 1969 2019
Sep 1969–May 1970
9-Month
17.58"
(446.53mm)
19.79"
(502.67mm)
-2.21"
(-56.14mm)
35th Driest Driest since: 1968 1934
90th Wettest Wettest since: 1969 2019
Aug 1969–May 1970
10-Month
20.20"
(513.08mm)
23.65"
(600.71mm)
-3.45"
(-87.63mm)
22nd Driest Driest since: 1968 1934
103rd Wettest Wettest since: 1969 2019
Jul 1969–May 1970
11-Month
26.46"
(672.08mm)
27.54"
(699.52mm)
-1.08"
(-27.44mm)
53rd Driest Driest since: 1968 1934
72nd Wettest Wettest since: 1969 2019
Jun 1969–May 1970
12-Month
33.65"
(854.71mm)
32.14"
(816.36mm)
1.51"
(38.35mm)
76th Driest Driest since: 1968 1934
49th Wettest Wettest since: 1969 2019
Dec 1968–May 1970
18-Month
46.75"
(1,187.45mm)
44.20"
(1,122.68mm)
2.55"
(64.77mm)
77th Driest Driest since: 1969 1934
47th Wettest Wettest since: 1966 2019
Jun 1968–May 1970
24-Month
68.68"
(1,744.47mm)
64.29"
(1,632.97mm)
4.39"
(111.50mm)
89th Driest Driest since: 1969 1957
35th Wettest Wettest since: 1966 2011
Ties: 1962
Jun 1967–May 1970
36-Month
98.21"
(2,494.53mm)
96.33"
(2,446.78mm)
1.88"
(47.75mm)
71st Driest Driest since: 1969 1958
52nd Wettest Wettest since: 1962 2011
Jun 1966–May 1970
48-Month
123.62"
(3,139.95mm)
128.31"
(3,259.07mm)
-4.69"
(-119.12mm)
34th Driest Driest since: 1967 1957
88th Wettest Wettest since: 1969 2011
Jun 1965–May 1970
60-Month
158.34"
(4,021.84mm)
160.32"
(4,072.13mm)
-1.98"
(-50.29mm)
49th Driest Driest since: 1968 1958
72nd Wettest Wettest since: 1969 2019

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2019, retrieved on October 15, 2019 from https://www.ncdc.noaa.gov/cag/