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


Iowa

Precipitation Rankings, September 1947

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
September 1947
1-Month
2.10"
(53.34mm)
3.67"
(93.22mm)
-1.57"
(-39.88mm)
28th Driest Driest since: 1940 1939
100th Wettest Wettest since: 1946 1965
Ties: 1932
Aug–Sep 1947
2-Month
3.60"
(91.44mm)
7.51"
(190.75mm)
-3.91"
(-99.31mm)
5th Driest Driest to Date 1976
123rd Wettest Wettest since: 1946 2018
Jul–Sep 1947
3-Month
5.25"
(133.35mm)
11.36"
(288.54mm)
-6.11"
(-155.19mm)
2nd Driest Driest to Date 2013
126th Wettest Wettest since: 1946 1993
Jun–Sep 1947
4-Month
15.15"
(384.81mm)
16.00"
(406.40mm)
-0.85"
(-21.59mm)
58th Driest Driest since: 1945 2012
70th Wettest Wettest since: 1946 1993
Ties: 1908
May–Sep 1947
5-Month
19.38"
(492.25mm)
20.04"
(509.02mm)
-0.66"
(-16.77mm)
60th Driest Driest since: 1940 1976
68th Wettest Wettest since: 1946 1993
Apr–Sep 1947
6-Month
24.29"
(616.97mm)
22.99"
(583.95mm)
1.30"
(33.02mm)
80th Driest Driest since: 1946 1988
48th Wettest Wettest since: 1945 1993
Mar–Sep 1947
7-Month
25.64"
(651.26mm)
24.94"
(633.48mm)
0.70"
(17.78mm)
70th Driest Driest since: 1941 1988
58th Wettest Wettest since: 1946 1993
Feb–Sep 1947
8-Month
25.94"
(658.88mm)
25.96"
(659.38mm)
-0.02"
(-0.50mm)
64th Driest Driest since: 1941 1988
64th Wettest Wettest since: 1946 1993
Jan–Sep 1947
9-Month
27.37"
(695.20mm)
26.93"
(684.02mm)
0.44"
(11.18mm)
71st Driest Driest since: 1941 1988
57th Wettest Wettest since: 1946 1993
Dec 1946–Sep 1947
10-Month
27.99"
(710.95mm)
28.04"
(712.22mm)
-0.05"
(-1.27mm)
62nd Driest Driest since: 1940 1988
65th Wettest Wettest since: 1946 1993
Nov 1946–Sep 1947
11-Month
29.72"
(754.89mm)
29.78"
(756.41mm)
-0.06"
(-1.52mm)
65th Driest Driest since: 1940 1934
62nd Wettest Wettest since: 1946 1993
Ties: 1926
Oct 1946–Sep 1947
12-Month
33.03"
(838.96mm)
32.09"
(815.09mm)
0.94"
(23.87mm)
74th Driest Driest since: 1946 1934
53rd Wettest Wettest since: 1945 1993
Apr 1946–Sep 1947
18-Month
56.04"
(1,423.42mm)
55.13"
(1,400.30mm)
0.91"
(23.12mm)
68th Driest Driest since: 1941 1934
59th Wettest Wettest since: 1946 1993
Oct 1945–Sep 1947
24-Month
65.81"
(1,671.57mm)
64.26"
(1,632.20mm)
1.55"
(39.37mm)
71st Driest Driest since: 1941 1956
55th Wettest Wettest since: 1946 1993
Oct 1944–Sep 1947
36-Month
100.36"
(2,549.14mm)
96.36"
(2,447.54mm)
4.00"
(101.60mm)
83rd Driest Driest since: 1942 1957
42nd Wettest Wettest since: 1946 2010
Oct 1943–Sep 1947
48-Month
136.31"
(3,462.27mm)
128.36"
(3,260.34mm)
7.95"
(201.93mm)
92nd Driest Driest since: 1946 1958
32nd Wettest Wettest since: 1945 2010
Oct 1942–Sep 1947
60-Month
168.93"
(4,290.82mm)
160.34"
(4,072.64mm)
8.59"
(218.18mm)
90th Driest Driest since: 1944 1957
33rd Wettest Wettest since: 1946 2010

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published June 2022, retrieved on July 6, 2022 from https://www.ncei.noaa.gov/cag/