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 August 2022. For more information, please see Climatological Rankings.


Iowa

Precipitation Rankings, August 1940

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
August 1940
1-Month
6.42"
(163.07mm)
3.84"
(97.54mm)
2.58"
(65.53mm)
120th Driest Driest since: 1939 1984
9th Wettest Wettest since: 1932 2007
Ties: 2018
Jul–Aug 1940
2-Month
10.99"
(279.15mm)
7.70"
(195.58mm)
3.29"
(83.57mm)
117th Driest Driest since: 1939 1947
12th Wettest Wettest since: 1907 1993
Jun–Aug 1940
3-Month
14.66"
(372.36mm)
12.33"
(313.18mm)
2.33"
(59.18mm)
100th Driest Driest since: 1939 1927
29th Wettest Wettest since: 1932 1993
May–Aug 1940
4-Month
16.68"
(423.67mm)
16.38"
(416.05mm)
0.30"
(7.62mm)
65th Driest Driest since: 1939 1936
64th Wettest Wettest since: 1938 1993
Apr–Aug 1940
5-Month
19.83"
(503.68mm)
19.32"
(490.73mm)
0.51"
(12.95mm)
67th Driest Driest since: 1939 1936
62nd Wettest Wettest since: 1938 1993
Mar–Aug 1940
6-Month
21.53"
(546.86mm)
21.28"
(540.51mm)
0.25"
(6.35mm)
66th Driest Driest since: 1939 1936
63rd Wettest Wettest since: 1938 1993
Feb–Aug 1940
7-Month
22.64"
(575.06mm)
22.29"
(566.17mm)
0.35"
(8.89mm)
66th Driest Driest since: 1939 1988
63rd Wettest Wettest since: 1938 1993
Ties: 1899
Jan–Aug 1940
8-Month
23.45"
(595.63mm)
23.27"
(591.06mm)
0.18"
(4.57mm)
64th Driest Driest since: 1939 1988
65th Wettest Wettest since: 1938 1993
Dec 1939–Aug 1940
9-Month
24.05"
(610.87mm)
24.37"
(619.00mm)
-0.32"
(-8.13mm)
60th Driest Driest since: 1939 1988
68th Wettest Wettest since: 1938 1993
Nov 1939–Aug 1940
10-Month
24.54"
(623.32mm)
26.11"
(663.19mm)
-1.57"
(-39.87mm)
44th Driest Driest since: 1939 1934
84th Wettest Wettest since: 1938 1993
Oct 1939–Aug 1940
11-Month
26.02"
(660.91mm)
28.42"
(721.87mm)
-2.40"
(-60.96mm)
36th Driest Driest since: 1939 1934
92nd Wettest Wettest since: 1938 1993
Sep 1939–Aug 1940
12-Month
26.86"
(682.24mm)
32.12"
(815.85mm)
-5.26"
(-133.61mm)
17th Driest Driest since: 1936 1934
111th Wettest Wettest since: 1939 1993
Mar 1939–Aug 1940
18-Month
45.32"
(1,151.13mm)
53.43"
(1,357.12mm)
-8.11"
(-205.99mm)
10th Driest Driest since: 1937 1911
118th Wettest Wettest since: 1939 1993
Sep 1938–Aug 1940
24-Month
58.14"
(1,476.76mm)
64.28"
(1,632.71mm)
-6.14"
(-155.95mm)
22nd Driest Driest since: 1937 1934
105th Wettest Wettest since: 1939 1993
Sep 1937–Aug 1940
36-Month
89.35"
(2,269.49mm)
96.39"
(2,448.31mm)
-7.04"
(-178.82mm)
23rd Driest Driest since: 1938 1957
103rd Wettest Wettest since: 1939 2010
Sep 1936–Aug 1940
48-Month
122.53"
(3,112.26mm)
128.37"
(3,260.60mm)
-5.84"
(-148.34mm)
28th Driest Driest since: 1939 1936
97th Wettest Wettest since: 1938 2010
Ties: 1919
Sep 1935–Aug 1940
60-Month
146.95"
(3,732.53mm)
160.37"
(4,073.40mm)
-13.42"
(-340.87mm)
11th Driest Driest since: 1938 1957
113th Wettest Wettest since: 1939 2011

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, Precipitation, published September 2022, retrieved on October 4, 2022 from https://www.ncdc.noaa.gov/cag/