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


Iowa

Precipitation Rankings, September 2012

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 2012
1-Month
1.62"
(41.15mm)
3.67"
(93.22mm)
-2.05"
(-52.07mm)
14th Driest Driest since: 1990 1939
114th Wettest Wettest since: 2011 1965
Aug–Sep 2012
2-Month
4.50"
(114.30mm)
7.51"
(190.75mm)
-3.01"
(-76.45mm)
11th Driest Driest since: 2003 1976
117th Wettest Wettest since: 2011 2018
Ties: 1899
Jul–Sep 2012
3-Month
5.67"
(144.02mm)
11.36"
(288.54mm)
-5.69"
(-144.52mm)
4th Driest Driest since: 1976 2013
124th Wettest Wettest since: 2011 1993
Jun–Sep 2012
4-Month
8.48"
(215.39mm)
16.00"
(406.40mm)
-7.52"
(-191.01mm)
1st Driest Driest to Date 2012
127th Wettest Wettest since: 2011 1993
May–Sep 2012
5-Month
11.99"
(304.55mm)
20.04"
(509.02mm)
-8.05"
(-204.47mm)
2nd Driest Driest since: 1976 1976
126th Wettest Wettest since: 2011 1993
Apr–Sep 2012
6-Month
15.89"
(403.61mm)
22.99"
(583.95mm)
-7.10"
(-180.34mm)
2nd Driest Driest since: 1988 1988
126th Wettest Wettest since: 2011 1993
Mar–Sep 2012
7-Month
17.80"
(452.12mm)
24.94"
(633.48mm)
-7.14"
(-181.36mm)
4th Driest Driest since: 1988 1988
124th Wettest Wettest since: 2011 1993
Feb–Sep 2012
8-Month
19.48"
(494.79mm)
25.96"
(659.38mm)
-6.48"
(-164.59mm)
4th Driest Driest since: 1988 1988
124th Wettest Wettest since: 2011 1993
Jan–Sep 2012
9-Month
20.05"
(509.27mm)
26.93"
(684.02mm)
-6.88"
(-174.75mm)
4th Driest Driest since: 1988 1988
124th Wettest Wettest since: 2011 1993
Dec 2011–Sep 2012
10-Month
22.13"
(562.10mm)
28.04"
(712.22mm)
-5.91"
(-150.12mm)
9th Driest Driest since: 1988 1988
118th Wettest Wettest since: 2011 1993
Nov 2011–Sep 2012
11-Month
24.21"
(614.93mm)
29.78"
(756.41mm)
-5.57"
(-141.48mm)
9th Driest Driest since: 2003 1934
118th Wettest Wettest since: 2011 1993
Oct 2011–Sep 2012
12-Month
24.95"
(633.73mm)
32.09"
(815.09mm)
-7.14"
(-181.36mm)
4th Driest Driest since: 1988 1934
123rd Wettest Wettest since: 2011 1993
Apr 2011–Sep 2012
18-Month
48.05"
(1,220.47mm)
55.13"
(1,400.30mm)
-7.08"
(-179.83mm)
15th Driest Driest since: 1989 1934
112th Wettest Wettest since: 2011 1993
Oct 2010–Sep 2012
24-Month
55.66"
(1,413.76mm)
64.26"
(1,632.20mm)
-8.60"
(-218.44mm)
10th Driest Driest since: 1989 1956
116th Wettest Wettest since: 2011 1993
Oct 2009–Sep 2012
36-Month
106.01"
(2,692.65mm)
96.36"
(2,447.54mm)
9.65"
(245.11mm)
101st Driest Driest since: 2007 1957
24th Wettest Wettest since: 2011 2010
Oct 2008–Sep 2012
48-Month
141.94"
(3,605.28mm)
128.36"
(3,260.34mm)
13.58"
(344.94mm)
104th Driest Driest since: 2007 1958
20th Wettest Wettest since: 2011 2010
Oct 2007–Sep 2012
60-Month
185.72"
(4,717.29mm)
160.34"
(4,072.64mm)
25.38"
(644.65mm)
114th Driest Driest since: 2009 1957
9th Wettest Wettest since: 2011 2010

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published August 2022, retrieved on August 10, 2022 from https://www.ncei.noaa.gov/cag/