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


Iowa

Precipitation Rankings, September 1899

View Period (Months):All12345678910111218243648
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
September 1899
1-Month
0.96"
(24.38mm)
3.67"
(93.22mm)
-2.71"
(-68.84mm)
5th Driest Driest to Date 1939
123rd Wettest Wettest since: 1898 1965
Aug–Sep 1899
2-Month
4.50"
(114.30mm)
7.51"
(190.75mm)
-3.01"
(-76.45mm)
11th Driest Driest since: 1897 1976
117th Wettest Wettest since: 1898 2018
Ties: 2012
Jul–Sep 1899
3-Month
7.60"
(193.04mm)
11.36"
(288.54mm)
-3.76"
(-95.50mm)
13th Driest Driest since: 1897 2013
115th Wettest Wettest since: 1898 1993
Jun–Sep 1899
4-Month
12.77"
(324.36mm)
16.00"
(406.40mm)
-3.23"
(-82.04mm)
21st Driest Driest since: 1897 2012
107th Wettest Wettest since: 1898 1993
May–Sep 1899
5-Month
18.81"
(477.77mm)
20.04"
(509.02mm)
-1.23"
(-31.25mm)
52nd Driest Driest since: 1898 1976
76th Wettest Wettest since: 1896 1993
Apr–Sep 1899
6-Month
21.18"
(537.97mm)
22.99"
(583.95mm)
-1.81"
(-45.98mm)
45th Driest Driest since: 1898 1988
83rd Wettest Wettest since: 1896 1993
Ties: 2017
Mar–Sep 1899
7-Month
22.76"
(578.10mm)
24.94"
(633.48mm)
-2.18"
(-55.38mm)
40th Driest Driest since: 1898 1988
88th Wettest Wettest since: 1896 1993
Feb–Sep 1899
8-Month
23.60"
(599.44mm)
25.96"
(659.38mm)
-2.36"
(-59.94mm)
40th Driest Driest since: 1898 1988
88th Wettest Wettest since: 1896 1993
Jan–Sep 1899
9-Month
23.85"
(605.79mm)
26.93"
(684.02mm)
-3.08"
(-78.23mm)
27th Driest Driest since: 1897 1988
101st Wettest Wettest since: 1898 1993
Dec 1898–Sep 1899
10-Month
24.31"
(617.47mm)
28.04"
(712.22mm)
-3.73"
(-94.75mm)
22nd Driest Driest since: 1897 1988
105th Wettest Wettest since: 1898 1993
Nov 1898–Sep 1899
11-Month
25.77"
(654.56mm)
29.78"
(756.41mm)
-4.01"
(-101.85mm)
23rd Driest Driest since: 1897 1934
104th Wettest Wettest since: 1898 1993
Oct 1898–Sep 1899
12-Month
29.35"
(745.49mm)
32.09"
(815.09mm)
-2.74"
(-69.60mm)
38th Driest Driest since: 1898 1934
89th Wettest Wettest since: 1896 1993
Apr 1898–Sep 1899
18-Month
49.38"
(1,254.25mm)
55.13"
(1,400.30mm)
-5.75"
(-146.05mm)
21st Driest Driest since: 1898 1934
106th Wettest Wettest since: 1897 1993
Oct 1897–Sep 1899
24-Month
57.21"
(1,453.13mm)
64.26"
(1,632.20mm)
-7.05"
(-179.07mm)
17th Driest Driest since: 1898 1956
109th Wettest Wettest since: 1897 1993
Oct 1896–Sep 1899
36-Month
86.03"
(2,185.16mm)
96.36"
(2,447.54mm)
-10.33"
(-262.38mm)
13th Driest Driest to Date 1957
112th Wettest Wettest since: 1898 2010
Oct 1895–Sep 1899
48-Month
120.36"
(3,057.14mm)
128.36"
(3,260.34mm)
-8.00"
(-203.20mm)
24th Driest Driest to Date 1958
100th Wettest Wettest to Date 2010

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published May 2022, retrieved on May 20, 2022 from https://www.ncdc.noaa.gov/cag/