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 1959

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 1959
1-Month
0.77"
(19.56mm)
0.98"
(24.89mm)
-0.21"
(-5.33mm)
51st Driest
Driest since:
1981
78th Wettest
Wettest since:
1949
Ties: 1943, 1991
Dec 1958–Jan 1959
2-Month
1.02"
(25.91mm)
2.08"
(52.83mm)
-1.06"
(-26.92mm)
9th Driest
Driest since:
2003
119th Wettest
Wettest since:
2016
Nov 1958–Jan 1959
3-Month
2.64"
(67.06mm)
3.82"
(97.03mm)
-1.18"
(-29.97mm)
32nd Driest
Driest since:
2003
96th Wettest
Wettest since:
1932
Ties: 2014
Oct 1958–Jan 1959
4-Month
3.56"
(90.42mm)
6.13"
(155.70mm)
-2.57"
(-65.28mm)
14th Driest
Driest since:
1911
114th Wettest
Wettest since:
1932
Sep 1958–Jan 1959
5-Month
6.63"
(168.40mm)
9.83"
(249.68mm)
-3.20"
(-81.28mm)
19th Driest
Driest since:
1977
109th Wettest
Wettest since:
1932
Aug 1958–Jan 1959
6-Month
9.10"
(231.14mm)
13.69"
(347.73mm)
-4.59"
(-116.59mm)
11th Driest
Driest since:
1977
117th Wettest
Wettest since:
2019
Jul 1958–Jan 1959
7-Month
16.27"
(413.26mm)
17.57"
(446.28mm)
-1.30"
(-33.02mm)
51st Driest
Driest since:
1977
77th Wettest
Wettest since:
2019
Jun 1958–Jan 1959
8-Month
20.13"
(511.30mm)
22.18"
(563.37mm)
-2.05"
(-52.07mm)
47th Driest
Driest since:
1977
81st Wettest
Wettest since:
2019
May 1958–Jan 1959
9-Month
22.13"
(562.10mm)
26.22"
(665.99mm)
-4.09"
(-103.89mm)
23rd Driest
Driest since:
1977
105th Wettest
Wettest since:
1994
Apr 1958–Jan 1959
10-Month
24.36"
(618.74mm)
29.17"
(740.92mm)
-4.81"
(-122.18mm)
19th Driest
Driest since:
1911
109th Wettest
Wettest since:
1994
Mar 1958–Jan 1959
11-Month
24.92"
(632.97mm)
31.14"
(790.96mm)
-6.22"
(-157.99mm)
15th Driest
Driest since:
1911
113th Wettest
Wettest since:
1994
Feb 1958–Jan 1959
12-Month
25.40"
(645.16mm)
32.15"
(816.61mm)
-6.75"
(-171.45mm)
12th Driest
Driest since:
1911
116th Wettest
Wettest since:
1994
Aug 1957–Jan 1959
18-Month
38.98"
(990.09mm)
45.86"
(1,164.84mm)
-6.88"
(-174.75mm)
17th Driest
Driest since:
1957
110th Wettest
Wettest since:
2020
Feb 1957–Jan 1959
24-Month
57.06"
(1,449.32mm)
64.28"
(1,632.71mm)
-7.22"
(-183.39mm)
17th Driest
Driest since:
1990
110th Wettest
Wettest since:
2020
Feb 1956–Jan 1959
36-Month
81.45"
(2,068.83mm)
96.29"
(2,445.77mm)
-14.84"
(-376.94mm)
4th Driest
Driest since:
1958
122nd Wettest
Wettest since:
2011
Feb 1955–Jan 1959
48-Month
103.97"
(2,640.84mm)
128.27"
(3,258.06mm)
-24.30"
(-617.22mm)
1st Driest
Driest since:
1959
124th Wettest
Wettest since:
2011
Feb 1954–Jan 1959
60-Month
138.81"
(3,525.77mm)
160.30"
(4,071.62mm)
-21.49"
(-545.85mm)
4th Driest
Driest since:
1957
120th Wettest
Wettest since:
2011

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