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 1903

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 1903
1-Month
0.25"
(6.35mm)
0.98"
(24.89mm)
-0.73"
(-18.54mm)
7th Driest
Driest since:
1981
122nd Wettest
Wettest since:
1949
Ties: 1899
Dec 1902–Jan 1903
2-Month
2.41"
(61.21mm)
2.08"
(52.83mm)
0.33"
(8.38mm)
87th Driest
Driest since:
2003
41st Wettest
Wettest since:
2016
Nov 1902–Jan 1903
3-Month
4.48"
(113.79mm)
3.82"
(97.03mm)
0.66"
(16.76mm)
92nd Driest
Driest since:
2003
36th Wettest
Wettest since:
1932
Ties: 1997
Oct 1902–Jan 1903
4-Month
6.81"
(172.97mm)
6.13"
(155.70mm)
0.68"
(17.27mm)
80th Driest
Driest since:
1911
48th Wettest
Wettest since:
1932
Sep 1902–Jan 1903
5-Month
11.27"
(286.26mm)
9.83"
(249.68mm)
1.44"
(36.58mm)
89th Driest
Driest since:
1977
39th Wettest
Wettest since:
1932
Ties: 2008
Aug 1902–Jan 1903
6-Month
17.99"
(456.95mm)
13.69"
(347.73mm)
4.30"
(109.22mm)
110th Driest
Driest since:
1977
18th Wettest
Wettest to Date
2019
Jul 1902–Jan 1903
7-Month
26.62"
(676.15mm)
17.57"
(446.28mm)
9.05"
(229.87mm)
126th Driest
Driest since:
1977
2nd Wettest
Wettest to Date
2019
Jun 1902–Jan 1903
8-Month
33.75"
(857.25mm)
22.18"
(563.37mm)
11.57"
(293.88mm)
125th Driest
Driest since:
1977
3rd Wettest
Wettest to Date
2019
May 1902–Jan 1903
9-Month
39.29"
(997.97mm)
26.22"
(665.99mm)
13.07"
(331.98mm)
125th Driest
Driest since:
1977
3rd Wettest
Wettest to Date
1994
Apr 1902–Jan 1903
10-Month
41.03"
(1,042.16mm)
29.17"
(740.92mm)
11.86"
(301.24mm)
125th Driest
Driest since:
1911
3rd Wettest
Wettest to Date
1994
Mar 1902–Jan 1903
11-Month
42.47"
(1,078.74mm)
31.14"
(790.96mm)
11.33"
(287.78mm)
124th Driest
Driest since:
1911
4th Wettest
Wettest to Date
1994
Feb 1902–Jan 1903
12-Month
43.15"
(1,096.01mm)
32.15"
(816.61mm)
11.00"
(279.40mm)
124th Driest
Driest since:
1911
4th Wettest
Wettest to Date
1994
Aug 1901–Jan 1903
18-Month
53.97"
(1,370.84mm)
45.86"
(1,164.84mm)
8.11"
(206.00mm)
111th Driest
Driest since:
1957
16th Wettest
Wettest to Date
2020
Feb 1901–Jan 1903
24-Month
67.83"
(1,722.88mm)
64.28"
(1,632.71mm)
3.55"
(90.17mm)
85th Driest
Driest since:
1990
42nd Wettest
Wettest to Date
2020
Feb 1900–Jan 1903
36-Month
103.48"
(2,628.39mm)
96.29"
(2,445.77mm)
7.19"
(182.62mm)
97th Driest
Driest since:
1958
29th Wettest
Wettest to Date
2011
Feb 1899–Jan 1903
48-Month
132.19"
(3,357.63mm)
128.27"
(3,258.06mm)
3.92"
(99.57mm)
79th Driest
Driest since:
1959
46th Wettest
Wettest to Date
2011
Feb 1898–Jan 1903
60-Month
160.97"
(4,088.64mm)
160.30"
(4,071.62mm)
0.67"
(17.02mm)
61st Driest
Driest since:
1957
63rd Wettest
Wettest to Date
2011

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