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, July 1940

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 1940
1-Month
4.57"
(116.08mm)
3.86"
(98.04mm)
0.71"
(18.04mm)
94th Driest Driest since: 1939 1936
32nd Wettest Wettest since: 1938 1993
Ties: 1938
Jun–Jul 1940
2-Month
8.24"
(209.30mm)
8.49"
(215.65mm)
-0.25"
(-6.35mm)
63rd Driest Driest since: 1939 1936
63rd Wettest Wettest since: 1938 1993
May–Jul 1940
3-Month
10.26"
(260.60mm)
12.53"
(318.26mm)
-2.27"
(-57.66mm)
28th Driest Driest since: 1939 1988
98th Wettest Wettest since: 1938 1993
Apr–Jul 1940
4-Month
13.41"
(340.61mm)
15.48"
(393.19mm)
-2.07"
(-52.58mm)
30th Driest Driest since: 1939 1936
96th Wettest Wettest since: 1938 1993
Mar–Jul 1940
5-Month
15.11"
(383.79mm)
17.43"
(442.72mm)
-2.32"
(-58.93mm)
27th Driest Driest since: 1939 1936
99th Wettest Wettest since: 1938 1993
Feb–Jul 1940
6-Month
16.22"
(411.99mm)
18.45"
(468.63mm)
-2.23"
(-56.64mm)
28th Driest Driest since: 1939 1988
98th Wettest Wettest since: 1938 1993
Jan–Jul 1940
7-Month
17.03"
(432.56mm)
19.43"
(493.52mm)
-2.40"
(-60.96mm)
29th Driest Driest since: 1939 1988
97th Wettest Wettest since: 1938 1993
Dec 1939–Jul 1940
8-Month
17.63"
(447.80mm)
20.53"
(521.46mm)
-2.90"
(-73.66mm)
20th Driest Driest since: 1939 1988
105th Wettest Wettest since: 1938 1993
Ties: 2012
Nov 1939–Jul 1940
9-Month
18.12"
(460.25mm)
22.27"
(565.66mm)
-4.15"
(-105.41mm)
15th Driest Driest since: 1936 1934
110th Wettest Wettest since: 1939 1993
Oct 1939–Jul 1940
10-Month
19.60"
(497.84mm)
24.58"
(624.33mm)
-4.98"
(-126.49mm)
12th Driest Driest since: 1936 1934
113th Wettest Wettest since: 1939 1993
Sep 1939–Jul 1940
11-Month
20.44"
(519.18mm)
28.28"
(718.31mm)
-7.84"
(-199.13mm)
5th Driest Driest since: 1934 1988
120th Wettest Wettest since: 1939 1993
Aug 1939–Jul 1940
12-Month
25.11"
(637.79mm)
32.14"
(816.36mm)
-7.03"
(-178.57mm)
6th Driest Driest since: 1936 1956
119th Wettest Wettest since: 1939 2008
Feb 1939–Jul 1940
18-Month
40.67"
(1,033.02mm)
50.60"
(1,285.24mm)
-9.93"
(-252.22mm)
7th Driest Driest since: 1934 1911
118th Wettest Wettest since: 1939 2008
Aug 1938–Jul 1940
24-Month
55.22"
(1,402.59mm)
64.31"
(1,633.47mm)
-9.09"
(-230.88mm)
11th Driest Driest since: 1934 1934
113th Wettest Wettest since: 1939 2008
Aug 1937–Jul 1940
36-Month
87.04"
(2,210.82mm)
96.40"
(2,448.56mm)
-9.36"
(-237.74mm)
14th Driest Driest since: 1936 1956
109th Wettest Wettest since: 1939 2010
Aug 1936–Jul 1940
48-Month
119.60"
(3,037.84mm)
128.38"
(3,260.85mm)
-8.78"
(-223.01mm)
21st Driest Driest since: 1939 1957
101st Wettest Wettest since: 1938 2010
Aug 1935–Jul 1940
60-Month
143.01"
(3,632.45mm)
160.37"
(4,073.40mm)
-17.36"
(-440.95mm)
8th Driest Driest since: 1937 1957
113th Wettest Wettest since: 1939 2011

Citing This Page

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