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, May 1945

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
May 1945
1-Month
2.87"
(72.90mm)
2.91"
(73.91mm)
-0.04"
(-1.01mm)
54th Driest
Driest since:
1934
75th Wettest
Wettest since:
2019
Ties: 1960
Apr–May 1945
2-Month
5.92"
(150.37mm)
5.43"
(137.92mm)
0.49"
(12.45mm)
94th Driest
Driest since:
1934
35th Wettest
Wettest since:
1957
Mar–May 1945
3-Month
9.04"
(229.62mm)
7.94"
(201.68mm)
1.10"
(27.94mm)
110th Driest
Driest since:
1925
19th Wettest
Wettest since:
1957, 1991
Feb–May 1945
4-Month
11.79"
(299.47mm)
10.07"
(255.78mm)
1.72"
(43.69mm)
118th Driest
Driest since:
1925
11th Wettest
Wettest since:
2019
Jan–May 1945
5-Month
13.59"
(345.19mm)
12.39"
(314.71mm)
1.20"
(30.48mm)
109th Driest
Driest since:
1934
20th Wettest
Wettest since:
2019
Dec 1944–May 1945
6-Month
15.65"
(397.51mm)
14.73"
(374.14mm)
0.92"
(23.37mm)
92nd Driest
Driest since:
1931
36th Wettest
Wettest since:
2019
Nov 1944–May 1945
7-Month
18.33"
(465.58mm)
16.96"
(430.78mm)
1.37"
(34.80mm)
104th Driest
Driest since:
1934
24th Wettest
Wettest since:
1983
Oct 1944–May 1945
8-Month
19.67"
(499.62mm)
19.13"
(485.90mm)
0.54"
(13.72mm)
79th Driest
Driest since:
1934
49th Wettest
Wettest since:
2019
Ties: 1947
Sep 1944–May 1945
9-Month
22.06"
(560.32mm)
21.62"
(549.15mm)
0.44"
(11.17mm)
76th Driest
Driest since:
1934
52nd Wettest
Wettest since:
2019
Aug 1944–May 1945
10-Month
25.02"
(635.51mm)
24.25"
(615.95mm)
0.77"
(19.56mm)
82nd Driest
Driest since:
1918
46th Wettest
Wettest since:
2019
Ties: 1933
Jul 1944–May 1945
11-Month
27.33"
(694.18mm)
27.03"
(686.56mm)
0.30"
(7.62mm)
68th Driest
Driest since:
1931
60th Wettest
Wettest since:
2019
Jun 1944–May 1945
12-Month
30.34"
(770.64mm)
29.95"
(760.73mm)
0.39"
(9.91mm)
69th Driest
Driest since:
1934
59th Wettest
Wettest since:
2019
Ties: 1947
Dec 1943–May 1945
18-Month
45.95"
(1,167.13mm)
44.70"
(1,135.38mm)
1.25"
(31.75mm)
87th Driest
Driest since:
1931
40th Wettest
Wettest since:
2019
Jun 1943–May 1945
24-Month
59.14"
(1,502.16mm)
59.92"
(1,521.97mm)
-0.78"
(-19.81mm)
50th Driest
Driest since:
1931
77th Wettest
Wettest since:
2020
Jun 1942–May 1945
36-Month
90.31"
(2,293.87mm)
89.88"
(2,282.95mm)
0.43"
(10.92mm)
67th Driest
Driest since:
1955
59th Wettest
Wettest since:
2019
Jun 1941–May 1945
48-Month
123.54"
(3,137.92mm)
119.78"
(3,042.41mm)
3.76"
(95.51mm)
94th Driest
Driest since:
1956
31st Wettest
Wettest since:
2019
Jun 1940–May 1945
60-Month
153.13"
(3,889.50mm)
149.64"
(3,800.86mm)
3.49"
(88.64mm)
83rd Driest
Driest since:
1957
41st Wettest
Wettest since:
2020

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