Statewide Rankings

Statewide Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Iowa

Precipitation Rankings, September 2007

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
September 2007
1-Month
2.87"
(72.90mm)
3.67"
(93.22mm)
-0.80"
(-20.32mm)
52nd Driest
Driest since:
1939
77th Wettest
Wettest since:
1965
Ties: 1917
Aug–Sep 2007
2-Month
12.56"
(319.02mm)
7.51"
(190.75mm)
5.05"
(128.27mm)
124th Driest
Driest since:
1976
5th Wettest
Wettest since:
2018
Jul–Sep 2007
3-Month
15.94"
(404.88mm)
11.36"
(288.54mm)
4.58"
(116.34mm)
117th Driest
Driest since:
2013
12th Wettest
Wettest since:
1993
Jun–Sep 2007
4-Month
19.32"
(490.73mm)
16.00"
(406.40mm)
3.32"
(84.33mm)
110th Driest
Driest since:
2012
19th Wettest
Wettest since:
1993
May–Sep 2007
5-Month
24.67"
(626.62mm)
20.04"
(509.02mm)
4.63"
(117.60mm)
114th Driest
Driest since:
1976
15th Wettest
Wettest since:
1993
Apr–Sep 2007
6-Month
29.24"
(742.70mm)
22.99"
(583.95mm)
6.25"
(158.75mm)
116th Driest
Driest since:
1988
13th Wettest
Wettest since:
1993
Mar–Sep 2007
7-Month
32.10"
(815.34mm)
24.94"
(633.48mm)
7.16"
(181.86mm)
118th Driest
Driest since:
1988
11th Wettest
Wettest since:
1993
Feb–Sep 2007
8-Month
33.78"
(858.01mm)
25.96"
(659.38mm)
7.82"
(198.63mm)
119th Driest
Driest since:
1988
10th Wettest
Wettest since:
1993
Jan–Sep 2007
9-Month
34.69"
(881.13mm)
26.93"
(684.02mm)
7.76"
(197.11mm)
119th Driest
Driest since:
1988
10th Wettest
Wettest since:
1993
Dec 2006–Sep 2007
10-Month
36.78"
(934.21mm)
28.04"
(712.22mm)
8.74"
(221.99mm)
118th Driest
Driest since:
1988
10th Wettest
Wettest since:
1993
Nov 2006–Sep 2007
11-Month
38.55"
(979.17mm)
29.78"
(756.41mm)
8.77"
(222.76mm)
121st Driest
Driest since:
1934
7th Wettest
Wettest since:
1993
Oct 2006–Sep 2007
12-Month
40.19"
(1,020.83mm)
32.09"
(815.09mm)
8.10"
(205.74mm)
118th Driest
Driest since:
1934
10th Wettest
Wettest since:
1993
Apr 2006–Sep 2007
18-Month
62.61"
(1,590.29mm)
55.13"
(1,400.30mm)
7.48"
(189.99mm)
107th Driest
Driest since:
1934
21st Wettest
Wettest since:
1993
Oct 2005–Sep 2007
24-Month
70.92"
(1,801.37mm)
64.26"
(1,632.20mm)
6.66"
(169.17mm)
103rd Driest
Driest since:
1956
24th Wettest
Wettest since:
1993
Oct 2004–Sep 2007
36-Month
101.77"
(2,584.96mm)
96.36"
(2,447.54mm)
5.41"
(137.42mm)
89th Driest
Driest since:
1957
37th Wettest
Wettest since:
2010
Oct 2003–Sep 2007
48-Month
138.08"
(3,507.23mm)
128.36"
(3,260.34mm)
9.72"
(246.89mm)
96th Driest
Driest since:
1958
29th Wettest
Wettest since:
2010
Oct 2002–Sep 2007
60-Month
165.07"
(4,192.78mm)
160.34"
(4,072.64mm)
4.73"
(120.14mm)
73rd Driest
Driest since:
1957
51st Wettest
Wettest since:
2010

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