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, August 2010

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
August 2010
1-Month 		4.83"
(122.68mm)		 3.84"
(97.54mm)		 0.99"
(25.14mm)		 98th Driest
Driest since:
 1984
31st Wettest
Wettest since:
 2007
Jul–Aug 2010
2-Month 		12.72"
(323.09mm)		 7.70"
(195.58mm)		 5.02"
(127.51mm)		 124th Driest
Driest since:
 1947
5th Wettest
Wettest since:
 1993
Jun–Aug 2010
3-Month 		23.00"
(584.20mm)		 12.33"
(313.18mm)		 10.67"
(271.02mm)		 127th Driest
Driest since:
 1927
2nd Wettest
Wettest since:
 1993
May–Aug 2010
4-Month 		27.19"
(690.63mm)		 16.38"
(416.05mm)		 10.81"
(274.58mm)		 126th Driest
Driest since:
 1936
3rd Wettest
Wettest since:
 1993
Apr–Aug 2010
5-Month 		30.89"
(784.61mm)		 19.32"
(490.73mm)		 11.57"
(293.88mm)		 127th Driest
Driest since:
 1936
2nd Wettest
Wettest since:
 1993
Mar–Aug 2010
6-Month 		32.61"
(828.29mm)		 21.28"
(540.51mm)		 11.33"
(287.78mm)		 127th Driest
Driest since:
 1936
2nd Wettest
Wettest since:
 1993
Feb–Aug 2010
7-Month 		33.57"
(852.68mm)		 22.29"
(566.17mm)		 11.28"
(286.51mm)		 127th Driest
Driest since:
 1988
2nd Wettest
Wettest since:
 1993
Jan–Aug 2010
8-Month 		34.87"
(885.70mm)		 23.27"
(591.06mm)		 11.60"
(294.64mm)		 127th Driest
Driest since:
 1988
2nd Wettest
Wettest since:
 1993
Dec 2009–Aug 2010
9-Month 		37.41"
(950.21mm)		 24.37"
(619.00mm)		 13.04"
(331.21mm)		 126th Driest
Driest since:
 1988
2nd Wettest
Wettest since:
 1993
Nov 2009–Aug 2010
10-Month 		38.60"
(980.44mm)		 26.11"
(663.19mm)		 12.49"
(317.25mm)		 126th Driest
Driest since:
 1934
2nd Wettest
Wettest since:
 1993
Oct 2009–Aug 2010
11-Month 		44.95"
(1,141.73mm)		 28.42"
(721.87mm)		 16.53"
(419.86mm)		 126th Driest
Driest since:
 1934
2nd Wettest
Wettest since:
 1993
Sep 2009–Aug 2010
12-Month 		46.68"
(1,185.67mm)		 32.12"
(815.85mm)		 14.56"
(369.82mm)		 126th Driest
Driest since:
 1934
2nd Wettest
Wettest since:
 1993
Mar 2009–Aug 2010
18-Month 		72.55"
(1,842.77mm)		 53.43"
(1,357.12mm)		 19.12"
(485.65mm)		 126th Driest
Driest since:
 1911
2nd Wettest
Wettest since:
 1993
Sep 2008–Aug 2010
24-Month 		85.04"
(2,160.02mm)		 64.28"
(1,632.71mm)		 20.76"
(527.31mm)		 125th Driest
Driest since:
 1934
2nd Wettest
Wettest since:
 1993
Sep 2007–Aug 2010
36-Month 		127.53"
(3,239.26mm)		 96.39"
(2,448.31mm)		 31.14"
(790.95mm)		 125th Driest
Driest since:
 1957
1st Wettest
Wettest to Date
 2010
Sep 2006–Aug 2010
48-Month 		169.07"
(4,294.38mm)		 128.37"
(3,260.60mm)		 40.70"
(1,033.78mm)		 124th Driest
Driest since:
 1936
1st Wettest
Wettest to Date
 2010
Sep 2005–Aug 2010
60-Month 		198.87"
(5,051.30mm)		 160.37"
(4,073.40mm)		 38.50"
(977.90mm)		 122nd Driest
Driest since:
 1957
2nd Wettest
Wettest to Date
 2011

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