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 1938

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 1938
1-Month
2.69"
(68.33mm)
2.52"
(64.01mm)
0.17"
(4.32mm)
85th Driest
Driest since:
1987
44th Wettest
Wettest since:
1957
Ties: 1908
Mar–Apr 1938
2-Month
5.99"
(152.15mm)
5.03"
(127.76mm)
0.96"
(24.39mm)
114th Driest
Driest since:
1910
15th Wettest
Wettest since:
1973
Feb–Apr 1938
3-Month
8.40"
(213.36mm)
7.16"
(181.86mm)
1.24"
(31.50mm)
117th Driest
Driest since:
1910
12th Wettest
Wettest since:
1983
Jan–Apr 1938
4-Month
10.51"
(266.95mm)
9.47"
(240.54mm)
1.04"
(26.41mm)
109th Driest
Driest since:
1910
20th Wettest
Wettest since:
1998
Dec 1937–Apr 1938
5-Month
12.94"
(328.68mm)
11.82"
(300.23mm)
1.12"
(28.45mm)
109th Driest
Driest since:
1931
19th Wettest
Wettest since:
1983
Nov 1937–Apr 1938
6-Month
15.10"
(383.54mm)
14.05"
(356.87mm)
1.05"
(26.67mm)
101st Driest
Driest since:
1977
27th Wettest
Wettest since:
1983
Ties: 2020
Oct 1937–Apr 1938
7-Month
17.71"
(449.83mm)
16.22"
(411.99mm)
1.49"
(37.84mm)
102nd Driest
Driest since:
1981
26th Wettest
Wettest since:
1983
Sep 1937–Apr 1938
8-Month
19.71"
(500.63mm)
18.71"
(475.23mm)
1.00"
(25.40mm)
96th Driest
Driest since:
1918
32nd Wettest
Wettest since:
2019
Aug 1937–Apr 1938
9-Month
22.26"
(565.40mm)
21.33"
(541.78mm)
0.93"
(23.62mm)
90th Driest
Driest since:
1918
38th Wettest
Wettest since:
2019
Jul 1937–Apr 1938
10-Month
24.88"
(631.95mm)
24.12"
(612.65mm)
0.76"
(19.30mm)
86th Driest
Driest since:
1931
42nd Wettest
Wettest since:
2019
Ties: 1906
Jun 1937–Apr 1938
11-Month
27.99"
(710.95mm)
27.04"
(686.82mm)
0.95"
(24.13mm)
88th Driest
Driest since:
1931
40th Wettest
Wettest since:
2019
May 1937–Apr 1938
12-Month
30.32"
(770.13mm)
29.95"
(760.73mm)
0.37"
(9.40mm)
65th Driest
Driest since:
1918
63rd Wettest
Wettest since:
2019
Nov 1936–Apr 1938
18-Month
44.95"
(1,141.73mm)
44.02"
(1,118.11mm)
0.93"
(23.62mm)
80th Driest
Driest since:
1931
47th Wettest
Wettest since:
2020
May 1936–Apr 1938
24-Month
58.70"
(1,490.98mm)
59.92"
(1,521.97mm)
-1.22"
(-30.99mm)
42nd Driest
Driest since:
1955
85th Wettest
Wettest since:
2020
May 1935–Apr 1938
36-Month
88.21"
(2,240.53mm)
89.88"
(2,282.95mm)
-1.67"
(-42.42mm)
42nd Driest
Driest since:
1955
84th Wettest
Wettest since:
2020
May 1934–Apr 1938
48-Month
115.99"
(2,946.15mm)
119.77"
(3,042.16mm)
-3.78"
(-96.01mm)
26th Driest
Driest since:
1956
99th Wettest
Wettest since:
2019
Ties: 1918
May 1933–Apr 1938
60-Month
141.87"
(3,603.50mm)
149.63"
(3,800.60mm)
-7.76"
(-197.10mm)
9th Driest
Driest since:
1957
115th Wettest
Wettest since:
2020

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