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 2009

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
September 2009
1-Month
1.73"
(43.94mm)
3.67"
(93.22mm)
-1.94"
(-49.28mm)
17th Driest Driest since: 2002 1939
111th Wettest Wettest since: 2008 1965
Aug–Sep 2009
2-Month
7.48"
(189.99mm)
7.51"
(190.75mm)
-0.03"
(-0.76mm)
68th Driest Driest since: 2008 1976
60th Wettest Wettest since: 2007 2018
Jul–Sep 2009
3-Month
12.10"
(307.34mm)
11.36"
(288.54mm)
0.74"
(18.80mm)
85th Driest Driest since: 2008 2013
43rd Wettest Wettest since: 2007 1993
Jun–Sep 2009
4-Month
17.39"
(441.71mm)
16.00"
(406.40mm)
1.39"
(35.31mm)
84th Driest Driest since: 2006 2012
44th Wettest Wettest since: 2008 1993
May–Sep 2009
5-Month
21.03"
(534.16mm)
20.04"
(509.02mm)
0.99"
(25.14mm)
77th Driest Driest since: 2006 1976
51st Wettest Wettest since: 2008 1993
Apr–Sep 2009
6-Month
24.63"
(625.60mm)
22.99"
(583.95mm)
1.64"
(41.65mm)
85th Driest Driest since: 2006 1988
43rd Wettest Wettest since: 2008 1993
Mar–Sep 2009
7-Month
27.60"
(701.04mm)
24.94"
(633.48mm)
2.66"
(67.56mm)
95th Driest Driest since: 2006 1988
33rd Wettest Wettest since: 2008 1993
Feb–Sep 2009
8-Month
28.39"
(721.11mm)
25.96"
(659.38mm)
2.43"
(61.73mm)
90th Driest Driest since: 2006 1988
38th Wettest Wettest since: 2008 1993
Jan–Sep 2009
9-Month
29.07"
(738.38mm)
26.93"
(684.02mm)
2.14"
(54.36mm)
87th Driest Driest since: 2006 1988
41st Wettest Wettest since: 2008 1993
Dec 2008–Sep 2009
10-Month
30.95"
(786.13mm)
28.04"
(712.22mm)
2.91"
(73.91mm)
94th Driest Driest since: 2006 1988
33rd Wettest Wettest since: 2008 1993
Nov 2008–Sep 2009
11-Month
32.67"
(829.82mm)
29.78"
(756.41mm)
2.89"
(73.41mm)
92nd Driest Driest since: 2006 1934
35th Wettest Wettest since: 2008 1993
Oct 2008–Sep 2009
12-Month
35.93"
(912.62mm)
32.09"
(815.09mm)
3.84"
(97.53mm)
94th Driest Driest since: 2006 1934
33rd Wettest Wettest since: 2008 1993
Apr 2008–Sep 2009
18-Month
68.34"
(1,735.84mm)
55.13"
(1,400.30mm)
13.21"
(335.54mm)
119th Driest Driest since: 2007 1934
8th Wettest Wettest since: 2008 1993
Oct 2007–Sep 2009
24-Month
79.71"
(2,024.63mm)
64.26"
(1,632.20mm)
15.45"
(392.43mm)
116th Driest Driest since: 2007 1956
10th Wettest Wettest since: 2008 1993
Oct 2006–Sep 2009
36-Month
119.90"
(3,045.46mm)
96.36"
(2,447.54mm)
23.54"
(597.92mm)
122nd Driest Driest since: 2008 1957
3rd Wettest Wettest since: 1993 2010
Oct 2005–Sep 2009
48-Month
150.63"
(3,826.00mm)
128.36"
(3,260.34mm)
22.27"
(565.66mm)
116th Driest Driest since: 2008 1958
8th Wettest Wettest since: 1994 2010
Oct 2004–Sep 2009
60-Month
181.48"
(4,609.59mm)
160.34"
(4,072.64mm)
21.14"
(536.95mm)
108th Driest Driest since: 2007 1957
15th Wettest Wettest since: 2008 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/