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 1971

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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
December 1971
1-Month 		1.87"
(47.50mm)		 1.11"
(28.19mm)		 0.76"
(19.31mm)		 112th Driest
Driest since:
 2002
17th Wettest
Wettest since:
 2015
Nov–Dec 1971
2-Month 		4.95"
(125.73mm)		 2.87"
(72.90mm)		 2.08"
(52.83mm)		 120th Driest
Driest since:
 1976
9th Wettest
Wettest since:
 2015
Oct–Dec 1971
3-Month 		8.56"
(217.42mm)		 5.16"
(131.06mm)		 3.40"
(86.36mm)		 119th Driest
Driest since:
 1910
10th Wettest
Wettest since:
 1931
Sep–Dec 1971
4-Month 		10.98"
(278.89mm)		 8.83"
(224.28mm)		 2.15"
(54.61mm)		 98th Driest
Driest since:
 1939, 1976
31st Wettest
Wettest since:
 1931
Aug–Dec 1971
5-Month 		12.22"
(310.39mm)		 12.67"
(321.82mm)		 -0.45"
(-11.43mm)		 62nd Driest
Driest since:
 1976
67th Wettest
Wettest since:
 2018
Jul–Dec 1971
6-Month 		15.65"
(397.51mm)		 16.52"
(419.61mm)		 -0.87"
(-22.10mm)		 57th Driest
Driest since:
 1976
72nd Wettest
Wettest since:
 2018
Jun–Dec 1971
7-Month 		20.15"
(511.81mm)		 21.15"
(537.21mm)		 -1.00"
(-25.40mm)		 54th Driest
Driest since:
 1976
75th Wettest
Wettest since:
 2018
Ties: 1911
May–Dec 1971
8-Month 		23.72"
(602.49mm)		 25.20"
(640.08mm)		 -1.48"
(-37.59mm)		 51st Driest
Driest since:
 1976
78th Wettest
Wettest since:
 1993
Apr–Dec 1971
9-Month 		25.09"
(637.29mm)		 28.15"
(715.01mm)		 -3.06"
(-77.72mm)		 32nd Driest
Driest since:
 1910
97th Wettest
Wettest since:
 1993
Mar–Dec 1971
10-Month 		26.00"
(660.40mm)		 30.10"
(764.54mm)		 -4.10"
(-104.14mm)		 24th Driest
Driest since:
 1910
105th Wettest
Wettest since:
 1993
Feb–Dec 1971
11-Month 		28.42"
(721.87mm)		 31.12"
(790.45mm)		 -2.70"
(-68.58mm)		 37th Driest
Driest since:
 1910
92nd Wettest
Wettest since:
 1993
Jan–Dec 1971
12-Month 		29.51"
(749.55mm)		 32.09"
(815.09mm)		 -2.58"
(-65.54mm)		 38th Driest
Driest since:
 1910
91st Wettest
Wettest since:
 1993
Ties: 1952
Jul 1970–Dec 1971
18-Month 		50.00"
(1,270.00mm)		 48.69"
(1,236.73mm)		 1.31"
(33.27mm)		 78th Driest
Driest since:
 1956
50th Wettest
Wettest since:
 1993
Jan 1970–Dec 1971
24-Month 		63.03"
(1,600.96mm)		 64.24"
(1,631.70mm)		 -1.21"
(-30.74mm)		 55th Driest
Driest since:
 1989
73rd Wettest
Wettest since:
 2019
Jan 1969–Dec 1971
36-Month 		97.81"
(2,484.37mm)		 96.36"
(2,447.54mm)		 1.45"
(36.83mm)		 69th Driest
Driest since:
 1957
58th Wettest
Wettest since:
 2010
Jan 1968–Dec 1971
48-Month 		130.61"
(3,317.49mm)		 128.37"
(3,260.60mm)		 2.24"
(56.89mm)		 74th Driest
Driest since:
 1958
52nd Wettest
Wettest since:
 2010
Jan 1967–Dec 1971
60-Month 		160.74"
(4,082.80mm)		 160.36"
(4,073.14mm)		 0.38"
(9.66mm)		 62nd Driest
Driest since:
 1956
63rd Wettest
Wettest since:
 2010

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