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, December 2011

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
December 2011
1-Month		2.08"
(52.83mm)		1.11"
(28.19mm)		0.97"
(24.64mm)		117th Driest
Driest since:
2002
12th Wettest
Wettest since:
2015
Nov–Dec 2011
2-Month		4.16"
(105.66mm)		2.87"
(72.90mm)		1.29"
(32.76mm)		111th Driest
Driest since:
1976
18th Wettest
Wettest since:
2015
Oct–Dec 2011
3-Month		4.90"
(124.46mm)		5.16"
(131.06mm)		-0.26"
(-6.60mm)		59th Driest
Driest since:
1910
70th Wettest
Wettest since:
1931
Sep–Dec 2011
4-Month		6.58"
(167.13mm)		8.83"
(224.28mm)		-2.25"
(-57.15mm)		27th Driest
Driest since:
1939, 1976
102nd Wettest
Wettest since:
1931
Ties: 1903
Aug–Dec 2011
5-Month		9.60"
(243.84mm)		12.67"
(321.82mm)		-3.07"
(-77.98mm)		20th Driest
Driest since:
1976
109th Wettest
Wettest since:
2018
Jul–Dec 2011
6-Month		13.00"
(330.20mm)		16.52"
(419.61mm)		-3.52"
(-89.41mm)		22nd Driest
Driest since:
1976
107th Wettest
Wettest since:
2018
Jun–Dec 2011
7-Month		19.19"
(487.43mm)		21.15"
(537.21mm)		-1.96"
(-49.78mm)		46th Driest
Driest since:
1976
83rd Wettest
Wettest since:
2018
May–Dec 2011
8-Month		24.19"
(614.43mm)		25.20"
(640.08mm)		-1.01"
(-25.65mm)		56th Driest
Driest since:
1976
73rd Wettest
Wettest since:
1993
Apr–Dec 2011
9-Month		28.00"
(711.20mm)		28.15"
(715.01mm)		-0.15"
(-3.81mm)		60th Driest
Driest since:
1910
69th Wettest
Wettest since:
1993
Ties: 1907, 1943
Mar–Dec 2011
10-Month		29.50"
(749.30mm)		30.10"
(764.54mm)		-0.60"
(-15.24mm)		58th Driest
Driest since:
1910
71st Wettest
Wettest since:
1993
Feb–Dec 2011
11-Month		30.89"
(784.61mm)		31.12"
(790.45mm)		-0.23"
(-5.84mm)		64th Driest
Driest since:
1910
65th Wettest
Wettest since:
1993
Jan–Dec 2011
12-Month		31.83"
(808.48mm)		32.09"
(815.09mm)		-0.26"
(-6.61mm)		63rd Driest
Driest since:
1910
66th Wettest
Wettest since:
1993
Jul 2010–Dec 2011
18-Month		53.73"
(1,364.74mm)		48.69"
(1,236.73mm)		5.04"
(128.01mm)		97th Driest
Driest since:
1956
31st Wettest
Wettest since:
1993
Jan 2010–Dec 2011
24-Month		75.88"
(1,927.35mm)		64.24"
(1,631.70mm)		11.64"
(295.65mm)		114th Driest
Driest since:
1989
14th Wettest
Wettest since:
2019
Jan 2009–Dec 2011
36-Month		115.03"
(2,921.76mm)		96.36"
(2,447.54mm)		18.67"
(474.22mm)		117th Driest
Driest since:
1957
10th Wettest
Wettest since:
2010
Jan 2008–Dec 2011
48-Month		157.95"
(4,011.93mm)		128.37"
(3,260.60mm)		29.58"
(751.33mm)		122nd Driest
Driest since:
1958
4th Wettest
Wettest since:
2010
Jan 2007–Dec 2011
60-Month		200.36"
(5,089.14mm)		160.36"
(4,073.14mm)		40.00"
(1,016.00mm)		123rd Driest
Driest since:
1956
2nd Wettest
Wettest since:
2010

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