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, September 2011

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
September 2011
1-Month
1.68"
(42.67mm)
3.67"
(93.22mm)
-1.99"
(-50.55mm)
15th Driest Driest since: 1990 1939
113th Wettest Wettest since: 2010 1965
Aug–Sep 2011
2-Month
4.70"
(119.38mm)
7.51"
(190.75mm)
-2.81"
(-71.37mm)
14th Driest Driest since: 2003 1976
114th Wettest Wettest since: 2010 2018
Jul–Sep 2011
3-Month
8.10"
(205.74mm)
11.36"
(288.54mm)
-3.26"
(-82.80mm)
15th Driest Driest since: 1984 2013
113th Wettest Wettest since: 2010 1993
Jun–Sep 2011
4-Month
14.29"
(362.97mm)
16.00"
(406.40mm)
-1.71"
(-43.43mm)
43rd Driest Driest since: 2003 2012
85th Wettest Wettest since: 2010 1993
May–Sep 2011
5-Month
19.29"
(489.97mm)
20.04"
(509.02mm)
-0.75"
(-19.05mm)
56th Driest Driest since: 2006 1976
72nd Wettest Wettest since: 2010 1993
Apr–Sep 2011
6-Month
23.10"
(586.74mm)
22.99"
(583.95mm)
0.11"
(2.79mm)
66th Driest Driest since: 2006 1988
62nd Wettest Wettest since: 2010 1993
Mar–Sep 2011
7-Month
24.60"
(624.84mm)
24.94"
(633.48mm)
-0.34"
(-8.64mm)
59th Driest Driest since: 2005 1988
69th Wettest Wettest since: 2010 1993
Ties: 1920
Feb–Sep 2011
8-Month
25.99"
(660.15mm)
25.96"
(659.38mm)
0.03"
(0.77mm)
65th Driest Driest since: 2006 1988
63rd Wettest Wettest since: 2010 1993
Jan–Sep 2011
9-Month
26.93"
(684.02mm)
26.93"
(684.02mm)
0.00"
(0.00mm)
65th Driest Driest since: 2006 1988
63rd Wettest Wettest since: 2010 1993
Dec 2010–Sep 2011
10-Month
28.16"
(715.26mm)
28.04"
(712.22mm)
0.12"
(3.04mm)
66th Driest Driest since: 2006 1988
61st Wettest Wettest since: 2010 1993
Nov 2010–Sep 2011
11-Month
29.80"
(756.92mm)
29.78"
(756.41mm)
0.02"
(0.51mm)
66th Driest Driest since: 2005 1934
61st Wettest Wettest since: 2010 1993
Oct 2010–Sep 2011
12-Month
30.71"
(780.03mm)
32.09"
(815.09mm)
-1.38"
(-35.06mm)
46th Driest Driest since: 2003 1934
81st Wettest Wettest since: 2010 1993
Apr 2010–Sep 2011
18-Month
67.00"
(1,701.80mm)
55.13"
(1,400.30mm)
11.87"
(301.50mm)
116th Driest Driest since: 2007 1934
11th Wettest Wettest since: 2010 1993
Oct 2009–Sep 2011
24-Month
81.06"
(2,058.92mm)
64.26"
(1,632.20mm)
16.80"
(426.72mm)
120th Driest Driest since: 2009 1956
6th Wettest Wettest since: 2010 1993
Oct 2008–Sep 2011
36-Month
116.99"
(2,971.55mm)
96.36"
(2,447.54mm)
20.63"
(524.01mm)
118th Driest Driest since: 2008 1957
7th Wettest Wettest since: 2010 2010
Oct 2007–Sep 2011
48-Month
160.77"
(4,083.56mm)
128.36"
(3,260.34mm)
32.41"
(823.22mm)
122nd Driest Driest since: 2009 1958
2nd Wettest Wettest since: 2010 2010
Oct 2006–Sep 2011
60-Month
200.96"
(5,104.38mm)
160.34"
(4,072.64mm)
40.62"
(1,031.74mm)
121st Driest Driest since: 2009 1957
2nd Wettest Wettest since: 2010 2010

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, Precipitation, published September 2022, retrieved on September 24, 2022 from https://www.ncdc.noaa.gov/cag/