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 1946

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 1946
1-Month
3.75"
(95.25mm)
2.91"
(73.91mm)
0.84"
(21.34mm)
121st Driest
Driest since:
1934
8th Wettest
Wettest since:
2019
Apr–May 1946
2-Month
5.41"
(137.41mm)
5.43"
(137.92mm)
-0.02"
(-0.51mm)
68th Driest
Driest since:
1934
61st Wettest
Wettest since:
1957
Ties: 1918, 1955
Mar–May 1946
3-Month
8.08"
(205.23mm)
7.94"
(201.68mm)
0.14"
(3.55mm)
77th Driest
Driest since:
1925
52nd Wettest
Wettest since:
1957, 1991
Feb–May 1946
4-Month
10.14"
(257.56mm)
10.07"
(255.78mm)
0.07"
(1.78mm)
73rd Driest
Driest since:
1925
56th Wettest
Wettest since:
2019
Jan–May 1946
5-Month
12.68"
(322.07mm)
12.39"
(314.71mm)
0.29"
(7.36mm)
78th Driest
Driest since:
1934
51st Wettest
Wettest since:
2019
Dec 1945–May 1946
6-Month
15.38"
(390.65mm)
14.73"
(374.14mm)
0.65"
(16.51mm)
86th Driest
Driest since:
1931
42nd Wettest
Wettest since:
2019
Nov 1945–May 1946
7-Month
17.62"
(447.55mm)
16.96"
(430.78mm)
0.66"
(16.77mm)
87th Driest
Driest since:
1934
41st Wettest
Wettest since:
1983
Oct 1945–May 1946
8-Month
19.62"
(498.35mm)
19.13"
(485.90mm)
0.49"
(12.45mm)
77th Driest
Driest since:
1934
51st Wettest
Wettest since:
2019
Ties: 1986, 1987
Sep 1945–May 1946
9-Month
23.06"
(585.72mm)
21.62"
(549.15mm)
1.44"
(36.57mm)
97th Driest
Driest since:
1934
31st Wettest
Wettest since:
2019
Aug 1945–May 1946
10-Month
25.66"
(651.76mm)
24.25"
(615.95mm)
1.41"
(35.81mm)
99th Driest
Driest since:
1918
29th Wettest
Wettest since:
2019
Ties: 1908
Jul 1945–May 1946
11-Month
28.71"
(729.23mm)
27.03"
(686.56mm)
1.68"
(42.67mm)
101st Driest
Driest since:
1931
27th Wettest
Wettest since:
2019
Jun 1945–May 1946
12-Month
32.12"
(815.85mm)
29.95"
(760.73mm)
2.17"
(55.12mm)
103rd Driest
Driest since:
1934
25th Wettest
Wettest since:
2019
Dec 1944–May 1946
18-Month
47.77"
(1,213.36mm)
44.70"
(1,135.38mm)
3.07"
(77.98mm)
105th Driest
Driest since:
1931
22nd Wettest
Wettest since:
2019
Ties: 2010
Jun 1944–May 1946
24-Month
62.46"
(1,586.48mm)
59.92"
(1,521.97mm)
2.54"
(64.51mm)
95th Driest
Driest since:
1931
32nd Wettest
Wettest since:
2020
Ties: 1947
Jun 1943–May 1946
36-Month
91.26"
(2,318.00mm)
89.88"
(2,282.95mm)
1.38"
(35.05mm)
76th Driest
Driest since:
1955
50th Wettest
Wettest since:
2019
Jun 1942–May 1946
48-Month
122.43"
(3,109.72mm)
119.78"
(3,042.41mm)
2.65"
(67.31mm)
83rd Driest
Driest since:
1956
42nd Wettest
Wettest since:
2019
Jun 1941–May 1946
60-Month
155.66"
(3,953.76mm)
149.64"
(3,800.86mm)
6.02"
(152.90mm)
100th Driest
Driest since:
1957
24th Wettest
Wettest to Date
2020

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