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, July 1939

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
July 1939
1-Month
3.20"
(81.28mm)
3.86"
(98.04mm)
-0.66"
(-16.76mm)
45th Driest Driest since: 1937 1936
81st Wettest Wettest since: 1938 1993
Ties: 1996
Jun–Jul 1939
2-Month
8.12"
(206.25mm)
8.49"
(215.65mm)
-0.37"
(-9.40mm)
56th Driest Driest since: 1937 1936
70th Wettest Wettest since: 1938 1993
May–Jul 1939
3-Month
10.16"
(258.06mm)
12.53"
(318.26mm)
-2.37"
(-60.20mm)
23rd Driest Driest since: 1936 1988
103rd Wettest Wettest since: 1938 1993
Ties: 1980
Apr–Jul 1939
4-Month
12.16"
(308.86mm)
15.48"
(393.19mm)
-3.32"
(-84.33mm)
16th Driest Driest since: 1936 1936
110th Wettest Wettest since: 1938 1993
Mar–Jul 1939
5-Month
13.79"
(350.27mm)
17.43"
(442.72mm)
-3.64"
(-92.45mm)
18th Driest Driest since: 1936 1936
108th Wettest Wettest since: 1938 1993
Feb–Jul 1939
6-Month
15.56"
(395.22mm)
18.45"
(468.63mm)
-2.89"
(-73.41mm)
23rd Driest Driest since: 1936 1988
103rd Wettest Wettest since: 1938 1993
Jan–Jul 1939
7-Month
16.42"
(417.07mm)
19.43"
(493.52mm)
-3.01"
(-76.45mm)
20th Driest Driest since: 1936 1988
106th Wettest Wettest since: 1938 1993
Dec 1938–Jul 1939
8-Month
17.11"
(434.59mm)
20.53"
(521.46mm)
-3.42"
(-86.87mm)
17th Driest Driest since: 1936 1988
108th Wettest Wettest since: 1938 1993
Nov 1938–Jul 1939
9-Month
19.81"
(503.17mm)
22.27"
(565.66mm)
-2.46"
(-62.49mm)
30th Driest Driest since: 1936 1934
95th Wettest Wettest since: 1938 1993
Oct 1938–Jul 1939
10-Month
20.66"
(524.76mm)
24.58"
(624.33mm)
-3.92"
(-99.57mm)
17th Driest Driest since: 1936 1934
108th Wettest Wettest since: 1938 1993
Sep 1938–Jul 1939
11-Month
26.61"
(675.89mm)
28.28"
(718.31mm)
-1.67"
(-42.42mm)
43rd Driest Driest since: 1936 1988
82nd Wettest Wettest since: 1938 1993
Aug 1938–Jul 1939
12-Month
30.11"
(764.79mm)
32.14"
(816.36mm)
-2.03"
(-51.57mm)
40th Driest Driest since: 1936 1956
85th Wettest Wettest since: 1938 2008
Feb 1938–Jul 1939
18-Month
51.64"
(1,311.66mm)
50.60"
(1,285.24mm)
1.04"
(26.42mm)
67th Driest Driest since: 1938 1911
58th Wettest Wettest since: 1932 2008
Aug 1937–Jul 1939
24-Month
61.93"
(1,573.02mm)
64.31"
(1,633.47mm)
-2.38"
(-60.45mm)
43rd Driest Driest since: 1937 1934
81st Wettest Wettest since: 1938 2008
Aug 1936–Jul 1939
36-Month
94.49"
(2,400.05mm)
96.40"
(2,448.56mm)
-1.91"
(-48.51mm)
48th Driest Driest since: 1938 1956
75th Wettest Wettest since: 1929 2010
Aug 1935–Jul 1939
48-Month
117.90"
(2,994.66mm)
128.38"
(3,260.85mm)
-10.48"
(-266.19mm)
14th Driest Driest since: 1937 1957
108th Wettest Wettest since: 1938 2010
Aug 1934–Jul 1939
60-Month
153.14"
(3,889.76mm)
160.37"
(4,073.40mm)
-7.23"
(-183.64mm)
26th Driest Driest since: 1938 1957
95th Wettest Wettest since: 1933 2011

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2019, retrieved on October 16, 2019 from https://www.ncdc.noaa.gov/cag/