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 1981

View Period (Months):
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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
January 1981
1-Month
0.10"
(2.54mm)
0.98"
(24.89mm)
-0.88"
(-22.35mm)
1st Driest
Driest since:
1981
128th Wettest
Wettest since:
1949
Dec 1980–Jan 1981
2-Month
1.19"
(30.23mm)
2.08"
(52.83mm)
-0.89"
(-22.60mm)
17th Driest
Driest since:
2003
111th Wettest
Wettest since:
2016
Nov 1980–Jan 1981
3-Month
1.62"
(41.15mm)
3.82"
(97.03mm)
-2.20"
(-55.88mm)
7th Driest
Driest since:
2003
121st Wettest
Wettest since:
1932
Oct 1980–Jan 1981
4-Month
3.58"
(90.93mm)
6.13"
(155.70mm)
-2.55"
(-64.77mm)
15th Driest
Driest since:
1911
113th Wettest
Wettest since:
1932
Sep 1980–Jan 1981
5-Month
6.71"
(170.43mm)
9.83"
(249.68mm)
-3.12"
(-79.25mm)
20th Driest
Driest since:
1977
108th Wettest
Wettest since:
1932
Aug 1980–Jan 1981
6-Month
14.53"
(369.06mm)
13.69"
(347.73mm)
0.84"
(21.33mm)
75th Driest
Driest since:
1977
53rd Wettest
Wettest since:
2019
Jul 1980–Jan 1981
7-Month
17.09"
(434.09mm)
17.57"
(446.28mm)
-0.48"
(-12.19mm)
61st Driest
Driest since:
1977
67th Wettest
Wettest since:
2019
Ties: 1955, 1997
Jun 1980–Jan 1981
8-Month
21.86"
(555.24mm)
22.18"
(563.37mm)
-0.32"
(-8.13mm)
60th Driest
Driest since:
1977
68th Wettest
Wettest since:
2019
May 1980–Jan 1981
9-Month
24.69"
(627.13mm)
26.22"
(665.99mm)
-1.53"
(-38.86mm)
52nd Driest
Driest since:
1977
76th Wettest
Wettest since:
1994
Apr 1980–Jan 1981
10-Month
26.13"
(663.70mm)
29.17"
(740.92mm)
-3.04"
(-77.22mm)
34th Driest
Driest since:
1911
94th Wettest
Wettest since:
1994
Mar 1980–Jan 1981
11-Month
27.15"
(689.61mm)
31.14"
(790.96mm)
-3.99"
(-101.35mm)
25th Driest
Driest since:
1911
103rd Wettest
Wettest since:
1994
Feb 1980–Jan 1981
12-Month
27.89"
(708.41mm)
32.15"
(816.61mm)
-4.26"
(-108.20mm)
25th Driest
Driest since:
1911
103rd Wettest
Wettest since:
1994
Aug 1979–Jan 1981
18-Month
42.82"
(1,087.63mm)
45.86"
(1,164.84mm)
-3.04"
(-77.21mm)
41st Driest
Driest since:
1957
86th Wettest
Wettest since:
2020
Feb 1979–Jan 1981
24-Month
61.88"
(1,571.75mm)
64.28"
(1,632.71mm)
-2.40"
(-60.96mm)
46th Driest
Driest since:
1990
81st Wettest
Wettest since:
2020
Feb 1978–Jan 1981
36-Month
97.09"
(2,466.09mm)
96.29"
(2,445.77mm)
0.80"
(20.32mm)
65th Driest
Driest since:
1958
61st Wettest
Wettest since:
2011
Feb 1977–Jan 1981
48-Month
133.77"
(3,397.76mm)
128.27"
(3,258.06mm)
5.50"
(139.70mm)
82nd Driest
Driest since:
1959
43rd Wettest
Wettest since:
2011
Feb 1976–Jan 1981
60-Month
157.64"
(4,004.06mm)
160.30"
(4,071.62mm)
-2.66"
(-67.56mm)
47th Driest
Driest since:
1957
77th Wettest
Wettest since:
2011

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