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, January 2012

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2023)		 Wettest/Driest
Since		 Record
January 2012
1-Month 		0.57"
(14.48mm)		 0.98"
(24.89mm)		 -0.41"
(-10.41mm)		 32nd Driest
Driest since:
 1981
98th Wettest
Wettest since:
 1949
Dec 2011–Jan 2012
2-Month 		2.65"
(67.31mm)		 2.08"
(52.83mm)		 0.57"
(14.48mm)		 98th Driest
Driest since:
 2003
31st Wettest
Wettest since:
 2016
Ties: 1975
Nov 2011–Jan 2012
3-Month 		4.73"
(120.14mm)		 3.82"
(97.03mm)		 0.91"
(23.11mm)		 95th Driest
Driest since:
 2003
34th Wettest
Wettest since:
 1932
Oct 2011–Jan 2012
4-Month 		5.47"
(138.94mm)		 6.13"
(155.70mm)		 -0.66"
(-16.76mm)		 49th Driest
Driest since:
 1911
80th Wettest
Wettest since:
 1932
Sep 2011–Jan 2012
5-Month 		7.15"
(181.61mm)		 9.83"
(249.68mm)		 -2.68"
(-68.07mm)		 27th Driest
Driest since:
 1977
102nd Wettest
Wettest since:
 1932
Aug 2011–Jan 2012
6-Month 		10.17"
(258.32mm)		 13.69"
(347.73mm)		 -3.52"
(-89.41mm)		 15th Driest
Driest since:
 1977
114th Wettest
Wettest since:
 2019
Jul 2011–Jan 2012
7-Month 		13.57"
(344.68mm)		 17.57"
(446.28mm)		 -4.00"
(-101.60mm)		 20th Driest
Driest since:
 1977
109th Wettest
Wettest since:
 2019
Jun 2011–Jan 2012
8-Month 		19.76"
(501.90mm)		 22.18"
(563.37mm)		 -2.42"
(-61.47mm)		 42nd Driest
Driest since:
 1977
87th Wettest
Wettest since:
 2019
May 2011–Jan 2012
9-Month 		24.76"
(628.90mm)		 26.22"
(665.99mm)		 -1.46"
(-37.09mm)		 54th Driest
Driest since:
 1977
75th Wettest
Wettest since:
 1994
Apr 2011–Jan 2012
10-Month 		28.57"
(725.68mm)		 29.17"
(740.92mm)		 -0.60"
(-15.24mm)		 59th Driest
Driest since:
 1911
70th Wettest
Wettest since:
 1994
Mar 2011–Jan 2012
11-Month 		30.07"
(763.78mm)		 31.14"
(790.96mm)		 -1.07"
(-27.18mm)		 56th Driest
Driest since:
 1911
73rd Wettest
Wettest since:
 1994
Feb 2011–Jan 2012
12-Month 		31.46"
(799.08mm)		 32.15"
(816.61mm)		 -0.69"
(-17.53mm)		 59th Driest
Driest since:
 1911
70th Wettest
Wettest since:
 1994
Aug 2010–Jan 2012
18-Month 		46.41"
(1,178.81mm)		 45.86"
(1,164.84mm)		 0.55"
(13.97mm)		 68th Driest
Driest since:
 1957
60th Wettest
Wettest since:
 2020
Feb 2010–Jan 2012
24-Month 		75.15"
(1,908.81mm)		 64.28"
(1,632.71mm)		 10.87"
(276.10mm)		 113th Driest
Driest since:
 1990
15th Wettest
Wettest since:
 2020
Feb 2009–Jan 2012
36-Month 		114.92"
(2,918.97mm)		 96.29"
(2,445.77mm)		 18.63"
(473.20mm)		 117th Driest
Driest since:
 1958
10th Wettest
Wettest since:
 2011
Feb 2008–Jan 2012
48-Month 		157.84"
(4,009.14mm)		 128.27"
(3,258.06mm)		 29.57"
(751.08mm)		 121st Driest
Driest since:
 1959
5th Wettest
Wettest since:
 2011
Feb 2007–Jan 2012
60-Month 		200.02"
(5,080.51mm)		 160.30"
(4,071.62mm)		 39.72"
(1,008.89mm)		 122nd Driest
Driest since:
 1957
3rd Wettest
Wettest since:
 2011

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