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 1957

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 1957
1-Month
0.56"
(14.22mm)
0.98"
(24.89mm)
-0.42"
(-10.67mm)
31st Driest
Driest since:
1981
98th Wettest
Wettest since:
1949
Dec 1956–Jan 1957
2-Month
1.08"
(27.43mm)
2.08"
(52.83mm)
-1.00"
(-25.40mm)
13th Driest
Driest since:
2003
115th Wettest
Wettest since:
2016
Nov 1956–Jan 1957
3-Month
3.11"
(78.99mm)
3.82"
(97.03mm)
-0.71"
(-18.04mm)
46th Driest
Driest since:
2003
82nd Wettest
Wettest since:
1932
Oct 1956–Jan 1957
4-Month
4.51"
(114.55mm)
6.13"
(155.70mm)
-1.62"
(-41.15mm)
28th Driest
Driest since:
1911
100th Wettest
Wettest since:
1932
Sep 1956–Jan 1957
5-Month
6.05"
(153.67mm)
9.83"
(249.68mm)
-3.78"
(-96.01mm)
11th Driest
Driest since:
1977
117th Wettest
Wettest since:
1932
Aug 1956–Jan 1957
6-Month
10.54"
(267.72mm)
13.69"
(347.73mm)
-3.15"
(-80.01mm)
21st Driest
Driest since:
1977
107th Wettest
Wettest since:
2019
Jul 1956–Jan 1957
7-Month
15.06"
(382.52mm)
17.57"
(446.28mm)
-2.51"
(-63.76mm)
34th Driest
Driest since:
1977
94th Wettest
Wettest since:
2019
Jun 1956–Jan 1957
8-Month
17.66"
(448.56mm)
22.18"
(563.37mm)
-4.52"
(-114.81mm)
19th Driest
Driest since:
1977
109th Wettest
Wettest since:
2019
May 1956–Jan 1957
9-Month
20.94"
(531.88mm)
26.22"
(665.99mm)
-5.28"
(-134.11mm)
13th Driest
Driest since:
1977
115th Wettest
Wettest since:
1994
Apr 1956–Jan 1957
10-Month
22.92"
(582.17mm)
29.17"
(740.92mm)
-6.25"
(-158.75mm)
11th Driest
Driest since:
1911
117th Wettest
Wettest since:
1994
Mar 1956–Jan 1957
11-Month
23.85"
(605.79mm)
31.14"
(790.96mm)
-7.29"
(-185.17mm)
8th Driest
Driest since:
1911
120th Wettest
Wettest since:
1994
Feb 1956–Jan 1957
12-Month
24.39"
(619.51mm)
32.15"
(816.61mm)
-7.76"
(-197.10mm)
5th Driest
Driest since:
1911
123rd Wettest
Wettest since:
1994
Aug 1955–Jan 1957
18-Month
31.98"
(812.29mm)
45.86"
(1,164.84mm)
-13.88"
(-352.55mm)
1st Driest
Driest since:
1957
126th Wettest
Wettest since:
2020
Feb 1955–Jan 1957
24-Month
46.91"
(1,191.51mm)
64.28"
(1,632.71mm)
-17.37"
(-441.20mm)
2nd Driest
Driest since:
1990
125th Wettest
Wettest since:
2020
Feb 1954–Jan 1957
36-Month
81.75"
(2,076.45mm)
96.29"
(2,445.77mm)
-14.54"
(-369.32mm)
5th Driest
Driest since:
1958
121st Wettest
Wettest since:
2011
Feb 1953–Jan 1957
48-Month
107.04"
(2,718.82mm)
128.27"
(3,258.06mm)
-21.23"
(-539.24mm)
2nd Driest
Driest since:
1959
123rd Wettest
Wettest since:
2011
Feb 1952–Jan 1957
60-Month
135.98"
(3,453.89mm)
160.30"
(4,071.62mm)
-24.32"
(-617.73mm)
1st Driest
Driest since:
1957
123rd Wettest
Wettest since:
2011

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