National Rankings

National Data Info
Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Contiguous U.S.

Precipitation Rankings, April 1931

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
April 1931
1-Month
2.07"
(52.58mm)
2.52"
(64.01mm)
-0.45"
(-11.43mm)
18th Driest
Driest since:
1987
111th Wettest
Wettest since:
1957
Ties: 1956
Mar–Apr 1931
2-Month
4.38"
(111.25mm)
5.03"
(127.76mm)
-0.65"
(-16.51mm)
20th Driest
Driest since:
1910
109th Wettest
Wettest since:
1973
Feb–Apr 1931
3-Month
6.22"
(157.99mm)
7.16"
(181.86mm)
-0.94"
(-23.87mm)
14th Driest
Driest since:
1910
115th Wettest
Wettest since:
1983
Jan–Apr 1931
4-Month
7.78"
(197.61mm)
9.48"
(240.79mm)
-1.70"
(-43.18mm)
5th Driest
Driest since:
1910
124th Wettest
Wettest since:
1998
Dec 1930–Apr 1931
5-Month
9.06"
(230.12mm)
11.82"
(300.23mm)
-2.76"
(-70.11mm)
1st Driest
Driest since:
1931
127th Wettest
Wettest since:
1983
Nov 1930–Apr 1931
6-Month
11.34"
(288.04mm)
14.05"
(356.87mm)
-2.71"
(-68.83mm)
4th Driest
Driest since:
1977
124th Wettest
Wettest since:
1983
Oct 1930–Apr 1931
7-Month
13.65"
(346.71mm)
16.22"
(411.99mm)
-2.57"
(-65.28mm)
6th Driest
Driest since:
1981
122nd Wettest
Wettest since:
1983
Sep 1930–Apr 1931
8-Month
15.98"
(405.89mm)
18.71"
(475.23mm)
-2.73"
(-69.34mm)
6th Driest
Driest since:
1918
122nd Wettest
Wettest since:
2019
Aug 1930–Apr 1931
9-Month
17.94"
(455.68mm)
21.33"
(541.78mm)
-3.39"
(-86.10mm)
3rd Driest
Driest since:
1918
125th Wettest
Wettest since:
2019
Jul 1930–Apr 1931
10-Month
19.73"
(501.14mm)
24.12"
(612.65mm)
-4.39"
(-111.51mm)
1st Driest
Driest since:
1931
127th Wettest
Wettest since:
2019
Jun 1930–Apr 1931
11-Month
22.06"
(560.32mm)
27.04"
(686.82mm)
-4.98"
(-126.50mm)
1st Driest
Driest since:
1931
127th Wettest
Wettest since:
2019
May 1930–Apr 1931
12-Month
25.23"
(640.84mm)
29.95"
(760.73mm)
-4.72"
(-119.89mm)
2nd Driest
Driest since:
1918
126th Wettest
Wettest since:
2019
Nov 1929–Apr 1931
18-Month
37.53"
(953.26mm)
44.02"
(1,118.11mm)
-6.49"
(-164.85mm)
1st Driest
Driest since:
1931
126th Wettest
Wettest since:
2020
May 1929–Apr 1931
24-Month
53.39"
(1,356.11mm)
59.92"
(1,521.97mm)
-6.53"
(-165.86mm)
2nd Driest
Driest since:
1955
125th Wettest
Wettest since:
2020
May 1928–Apr 1931
36-Month
84.58"
(2,148.33mm)
89.88"
(2,282.95mm)
-5.30"
(-134.62mm)
10th Driest
Driest since:
1955
116th Wettest
Wettest since:
2020
May 1927–Apr 1931
48-Month
114.94"
(2,919.48mm)
119.77"
(3,042.16mm)
-4.83"
(-122.68mm)
15th Driest
Driest since:
1956
110th Wettest
Wettest since:
2019
May 1926–Apr 1931
60-Month
147.11"
(3,736.59mm)
149.63"
(3,800.60mm)
-2.52"
(-64.01mm)
40th Driest
Driest since:
1957
84th Wettest
Wettest since:
2020

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