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 1950

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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
April 1950
1-Month
2.08"
(52.83mm)
2.52"
(64.01mm)
-0.44"
(-11.18mm)
20th Driest
Driest since:
1987
109th Wettest
Wettest since:
1957
Ties: 1906
Mar–Apr 1950
2-Month
4.57"
(116.08mm)
5.03"
(127.76mm)
-0.46"
(-11.68mm)
35th Driest
Driest since:
1910
94th Wettest
Wettest since:
1973
Ties: 1992, 2021
Feb–Apr 1950
3-Month
6.80"
(172.72mm)
7.16"
(181.86mm)
-0.36"
(-9.14mm)
49th Driest
Driest since:
1910
80th Wettest
Wettest since:
1983
Ties: 1962
Jan–Apr 1950
4-Month
10.16"
(258.06mm)
9.48"
(240.79mm)
0.68"
(17.27mm)
101st Driest
Driest since:
1910
28th Wettest
Wettest since:
1998
Dec 1949–Apr 1950
5-Month
12.38"
(314.45mm)
11.82"
(300.23mm)
0.56"
(14.22mm)
89th Driest
Driest since:
1931
39th Wettest
Wettest since:
1983
Nov 1949–Apr 1950
6-Month
13.57"
(344.68mm)
14.05"
(356.87mm)
-0.48"
(-12.19mm)
51st Driest
Driest since:
1977
77th Wettest
Wettest since:
1983
Ties: 1987
Oct 1949–Apr 1950
7-Month
16.37"
(415.80mm)
16.22"
(411.99mm)
0.15"
(3.81mm)
72nd Driest
Driest since:
1981
56th Wettest
Wettest since:
1983
Ties: 1921
Sep 1949–Apr 1950
8-Month
18.59"
(472.19mm)
18.71"
(475.23mm)
-0.12"
(-3.04mm)
60th Driest
Driest since:
1918
68th Wettest
Wettest since:
2019
Ties: 1926
Aug 1949–Apr 1950
9-Month
21.08"
(535.43mm)
21.33"
(541.78mm)
-0.25"
(-6.35mm)
53rd Driest
Driest since:
1918
75th Wettest
Wettest since:
2019
Jul 1949–Apr 1950
10-Month
24.16"
(613.66mm)
24.12"
(612.65mm)
0.04"
(1.01mm)
62nd Driest
Driest since:
1931
66th Wettest
Wettest since:
2019
Ties: 1992
Jun 1949–Apr 1950
11-Month
27.36"
(694.94mm)
27.04"
(686.82mm)
0.32"
(8.12mm)
68th Driest
Driest since:
1931
60th Wettest
Wettest since:
2019
May 1949–Apr 1950
12-Month
30.34"
(770.64mm)
29.95"
(760.73mm)
0.39"
(9.91mm)
66th Driest
Driest since:
1918
62nd Wettest
Wettest since:
2019
Nov 1948–Apr 1950
18-Month
46.44"
(1,179.58mm)
44.02"
(1,118.11mm)
2.42"
(61.47mm)
100th Driest
Driest since:
1931
27th Wettest
Wettest since:
2020
May 1948–Apr 1950
24-Month
61.09"
(1,551.69mm)
59.92"
(1,521.97mm)
1.17"
(29.72mm)
75th Driest
Driest since:
1955
52nd Wettest
Wettest since:
2020
May 1947–Apr 1950
36-Month
91.76"
(2,330.70mm)
89.88"
(2,282.95mm)
1.88"
(47.75mm)
80th Driest
Driest since:
1955
46th Wettest
Wettest since:
2020
May 1946–Apr 1950
48-Month
122.66"
(3,115.56mm)
119.77"
(3,042.16mm)
2.89"
(73.40mm)
85th Driest
Driest since:
1956
40th Wettest
Wettest since:
2019
May 1945–Apr 1950
60-Month
153.90"
(3,909.06mm)
149.63"
(3,800.60mm)
4.27"
(108.46mm)
90th Driest
Driest since:
1957
34th Wettest
Wettest since:
2020

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