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 1976

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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2021)		 Wettest/Driest
Since		 Record
December 1976
1-Month 		0.31"
(7.87mm)		 1.11"
(28.19mm)		 -0.80"
(-20.32mm)		 3rd Driest
Driest since:
 2002
125th Wettest
Wettest since:
 2015
Nov–Dec 1976
2-Month 		0.41"
(10.41mm)		 2.87"
(72.90mm)		 -2.46"
(-62.49mm)		 1st Driest
Driest since:
 1976
127th Wettest
Wettest since:
 2015
Oct–Dec 1976
3-Month 		1.94"
(49.28mm)		 5.16"
(131.06mm)		 -3.22"
(-81.78mm)		 2nd Driest
Driest since:
 1910
126th Wettest
Wettest since:
 1931
Sep–Dec 1976
4-Month 		3.41"
(86.61mm)		 8.83"
(224.28mm)		 -5.42"
(-137.67mm)		 1st Driest
Driest since:
 1939, 1976
127th Wettest
Wettest since:
 1931
Ties: 1939
Aug–Dec 1976
5-Month 		4.89"
(124.21mm)		 12.67"
(321.82mm)		 -7.78"
(-197.61mm)		 1st Driest
Driest since:
 1976
127th Wettest
Wettest since:
 2018
Jul–Dec 1976
6-Month 		7.44"
(188.98mm)		 16.52"
(419.61mm)		 -9.08"
(-230.63mm)		 1st Driest
Driest since:
 1976
127th Wettest
Wettest since:
 2018
Jun–Dec 1976
7-Month 		10.69"
(271.53mm)		 21.15"
(537.21mm)		 -10.46"
(-265.68mm)		 1st Driest
Driest since:
 1976
127th Wettest
Wettest since:
 2018
May–Dec 1976
8-Month 		13.89"
(352.81mm)		 25.20"
(640.08mm)		 -11.31"
(-287.27mm)		 1st Driest
Driest since:
 1976
127th Wettest
Wettest since:
 1993
Apr–Dec 1976
9-Month 		18.48"
(469.39mm)		 28.15"
(715.01mm)		 -9.67"
(-245.62mm)		 2nd Driest
Driest since:
 1910
126th Wettest
Wettest since:
 1993
Mar–Dec 1976
10-Month 		21.89"
(556.01mm)		 30.10"
(764.54mm)		 -8.21"
(-208.53mm)		 5th Driest
Driest since:
 1910
123rd Wettest
Wettest since:
 1993
Feb–Dec 1976
11-Month 		23.37"
(593.60mm)		 31.12"
(790.45mm)		 -7.75"
(-196.85mm)		 4th Driest
Driest since:
 1910
124th Wettest
Wettest since:
 1993
Jan–Dec 1976
12-Month 		23.60"
(599.44mm)		 32.09"
(815.09mm)		 -8.49"
(-215.65mm)		 4th Driest
Driest since:
 1910
124th Wettest
Wettest since:
 1993
Jul 1975–Dec 1976
18-Month 		36.36"
(923.54mm)		 48.69"
(1,236.73mm)		 -12.33"
(-313.19mm)		 2nd Driest
Driest since:
 1956
125th Wettest
Wettest since:
 1993
Jan 1975–Dec 1976
24-Month 		53.67"
(1,363.22mm)		 64.24"
(1,631.70mm)		 -10.57"
(-268.48mm)		 6th Driest
Driest since:
 1989
121st Wettest
Wettest since:
 2019
Jan 1974–Dec 1976
36-Month 		85.65"
(2,175.51mm)		 96.36"
(2,447.54mm)		 -10.71"
(-272.03mm)		 13th Driest
Driest since:
 1957
113th Wettest
Wettest since:
 2010
Jan 1973–Dec 1976
48-Month 		128.57"
(3,265.68mm)		 128.37"
(3,260.60mm)		 0.20"
(5.08mm)		 61st Driest
Driest since:
 1958
64th Wettest
Wettest since:
 2010
Jan 1972–Dec 1976
60-Month 		165.62"
(4,206.75mm)		 160.36"
(4,073.14mm)		 5.26"
(133.61mm)		 77th Driest
Driest since:
 1956
47th Wettest
Wettest since:
 2010

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