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 1949

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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 1949
1-Month
2.09"
(53.09mm)
2.52"
(64.01mm)
-0.43"
(-10.92mm)
22nd Driest
Driest since:
1987
107th Wettest
Wettest since:
1957
Ties: 1916
Mar–Apr 1949
2-Month
4.56"
(115.82mm)
5.03"
(127.76mm)
-0.47"
(-11.94mm)
32nd Driest
Driest since:
1910
97th Wettest
Wettest since:
1973
Ties: 1911, 1954
Feb–Apr 1949
3-Month
6.96"
(176.78mm)
7.16"
(181.86mm)
-0.20"
(-5.08mm)
63rd Driest
Driest since:
1910
66th Wettest
Wettest since:
1983
Ties: 2004
Jan–Apr 1949
4-Month
10.12"
(257.05mm)
9.47"
(240.54mm)
0.65"
(16.51mm)
99th Driest
Driest since:
1910
30th Wettest
Wettest since:
1998
Ties: 1929
Dec 1948–Apr 1949
5-Month
12.71"
(322.83mm)
11.82"
(300.23mm)
0.89"
(22.60mm)
101st Driest
Driest since:
1931
27th Wettest
Wettest since:
1983
Ties: 2008
Nov 1948–Apr 1949
6-Month
16.10"
(408.94mm)
14.05"
(356.87mm)
2.05"
(52.07mm)
116th Driest
Driest since:
1977
12th Wettest
Wettest since:
1983
Oct 1948–Apr 1949
7-Month
17.64"
(448.06mm)
16.22"
(411.99mm)
1.42"
(36.07mm)
101st Driest
Driest since:
1981
27th Wettest
Wettest since:
1983
Sep 1948–Apr 1949
8-Month
19.45"
(494.03mm)
18.71"
(475.23mm)
0.74"
(18.80mm)
88th Driest
Driest since:
1918
40th Wettest
Wettest since:
2019
Aug 1948–Apr 1949
9-Month
21.69"
(550.93mm)
21.33"
(541.78mm)
0.36"
(9.15mm)
78th Driest
Driest since:
1918
50th Wettest
Wettest since:
2019
Jul 1948–Apr 1949
10-Month
24.75"
(628.65mm)
24.12"
(612.65mm)
0.63"
(16.00mm)
82nd Driest
Driest since:
1931
46th Wettest
Wettest since:
2019
Jun 1948–Apr 1949
11-Month
27.98"
(710.69mm)
27.04"
(686.82mm)
0.94"
(23.87mm)
87th Driest
Driest since:
1931
41st Wettest
Wettest since:
2019
May 1948–Apr 1949
12-Month
30.75"
(781.05mm)
29.95"
(760.73mm)
0.80"
(20.32mm)
82nd Driest
Driest since:
1918
46th Wettest
Wettest since:
2019
Nov 1947–Apr 1949
18-Month
45.58"
(1,157.73mm)
44.02"
(1,118.11mm)
1.56"
(39.62mm)
91st Driest
Driest since:
1931
36th Wettest
Wettest since:
2020
May 1947–Apr 1949
24-Month
61.42"
(1,560.07mm)
59.92"
(1,521.97mm)
1.50"
(38.10mm)
78th Driest
Driest since:
1955
49th Wettest
Wettest since:
2020
May 1946–Apr 1949
36-Month
92.32"
(2,344.93mm)
89.88"
(2,282.95mm)
2.44"
(61.98mm)
84th Driest
Driest since:
1955
42nd Wettest
Wettest since:
2020
May 1945–Apr 1949
48-Month
123.56"
(3,138.42mm)
119.77"
(3,042.16mm)
3.79"
(96.26mm)
95th Driest
Driest since:
1956
30th Wettest
Wettest since:
2019
May 1944–Apr 1949
60-Month
154.03"
(3,912.36mm)
149.63"
(3,800.60mm)
4.40"
(111.76mm)
92nd Driest
Driest since:
1957
32nd Wettest
Wettest since:
2020

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