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, November 2020

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
November 2020
1-Month		2.09"
(53.09mm)		1.75"
(44.45mm)		0.34"
(8.64mm)		93rd Driest
Driest since:
1976
36th Wettest
Wettest since:
1931
Oct–Nov 2020
2-Month		3.99"
(101.35mm)		4.04"
(102.62mm)		-0.05"
(-1.27mm)		63rd Driest
Driest since:
1910
66th Wettest
Wettest since:
1931
Sep–Nov 2020
3-Month		8.06"
(204.72mm)		7.71"
(195.83mm)		0.35"
(8.89mm)		78th Driest
Driest since:
1953
51st Wettest
Wettest since:
1931
Aug–Nov 2020
4-Month		9.29"
(235.97mm)		11.55"
(293.37mm)		-2.26"
(-57.40mm)		33rd Driest
Driest since:
1976
96th Wettest
Wettest since:
2018
Ties: 1948
Jul–Nov 2020
5-Month		12.22"
(310.39mm)		15.41"
(391.41mm)		-3.19"
(-81.02mm)		27th Driest
Driest since:
1976
102nd Wettest
Wettest since:
1993
Jun–Nov 2020
6-Month		17.17"
(436.12mm)		20.04"
(509.02mm)		-2.87"
(-72.90mm)		31st Driest
Driest since:
1976
98th Wettest
Wettest since:
1993
May–Nov 2020
7-Month		21.74"
(552.20mm)		24.09"
(611.89mm)		-2.35"
(-59.69mm)		37th Driest
Driest since:
1976
92nd Wettest
Wettest since:
1993
Apr–Nov 2020
8-Month		23.39"
(594.11mm)		27.03"
(686.56mm)		-3.64"
(-92.45mm)		27th Driest
Driest since:
1910
102nd Wettest
Wettest since:
1993
Mar–Nov 2020
9-Month		26.30"
(668.02mm)		28.99"
(736.35mm)		-2.69"
(-68.33mm)		40th Driest
Driest since:
1910
89th Wettest
Wettest since:
1993
Feb–Nov 2020
10-Month		26.73"
(678.94mm)		30.00"
(762.00mm)		-3.27"
(-83.06mm)		31st Driest
Driest since:
1910
98th Wettest
Wettest since:
1993
Jan–Nov 2020
11-Month		28.14"
(714.76mm)		30.98"
(786.89mm)		-2.84"
(-72.13mm)		34th Driest
Driest since:
1910
95th Wettest
Wettest since:
1993
Dec 2019–Nov 2020
12-Month		29.42"
(747.27mm)		32.08"
(814.83mm)		-2.66"
(-67.56mm)		39th Driest
Driest since:
1910
89th Wettest
Wettest since:
1993
Jun 2019–Nov 2020
18-Month		52.72"
(1,339.09mm)		52.18"
(1,325.37mm)		0.54"
(13.72mm)		67th Driest
Driest since:
1956
61st Wettest
Wettest since:
2019
Dec 2018–Nov 2020
24-Month		71.87"
(1,825.50mm)		64.24"
(1,631.70mm)		7.63"
(193.80mm)		102nd Driest
Driest since:
1956
25th Wettest
Wettest since:
2019
Dec 2017–Nov 2020
36-Month		115.24"
(2,927.10mm)		96.35"
(2,447.29mm)		18.89"
(479.81mm)		118th Driest
Driest since:
1957
8th Wettest
Wettest since:
2010
Dec 2016–Nov 2020
48-Month		148.73"
(3,777.74mm)		128.38"
(3,260.85mm)		20.35"
(516.89mm)		115th Driest
Driest since:
1958
10th Wettest
Wettest since:
2010
Dec 2015–Nov 2020
60-Month		190.02"
(4,826.51mm)		160.36"
(4,073.14mm)		29.66"
(753.37mm)		119th Driest
Driest since:
1956
5th Wettest
Wettest since:
2010

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