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 1913

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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 1913
1-Month
2.51"
(63.75mm)
2.91"
(73.91mm)
-0.40"
(-10.16mm)
26th Driest
Driest since:
1934
103rd Wettest
Wettest since:
2019
Apr–May 1913
2-Month
4.56"
(115.82mm)
5.43"
(137.92mm)
-0.87"
(-22.10mm)
12th Driest
Driest since:
1934
117th Wettest
Wettest since:
1957
Ties: 1932
Mar–May 1913
3-Month
7.55"
(191.77mm)
7.94"
(201.68mm)
-0.39"
(-9.91mm)
45th Driest
Driest since:
1925
84th Wettest
Wettest since:
1957, 1991
Ties: 1967, 2007, 2021
Feb–May 1913
4-Month
9.45"
(240.03mm)
10.07"
(255.78mm)
-0.62"
(-15.75mm)
34th Driest
Driest since:
1925
95th Wettest
Wettest since:
2019
Ties: 2012
Jan–May 1913
5-Month
12.32"
(312.93mm)
12.39"
(314.71mm)
-0.07"
(-1.78mm)
64th Driest
Driest since:
1934
65th Wettest
Wettest since:
2019
Dec 1912–May 1913
6-Month
14.42"
(366.27mm)
14.73"
(374.14mm)
-0.31"
(-7.87mm)
54th Driest
Driest since:
1931
74th Wettest
Wettest since:
2019
Nov 1912–May 1913
7-Month
15.94"
(404.88mm)
16.96"
(430.78mm)
-1.02"
(-25.90mm)
38th Driest
Driest since:
1934
90th Wettest
Wettest since:
1983
Oct 1912–May 1913
8-Month
18.07"
(458.98mm)
19.13"
(485.90mm)
-1.06"
(-26.92mm)
30th Driest
Driest since:
1934
98th Wettest
Wettest since:
2019
Ties: 1930
Sep 1912–May 1913
9-Month
20.58"
(522.73mm)
21.62"
(549.15mm)
-1.04"
(-26.42mm)
34th Driest
Driest since:
1934
94th Wettest
Wettest since:
2019
Aug 1912–May 1913
10-Month
23.63"
(600.20mm)
24.25"
(615.95mm)
-0.62"
(-15.75mm)
45th Driest
Driest since:
1918
83rd Wettest
Wettest since:
2019
Ties: 1970
Jul 1912–May 1913
11-Month
26.62"
(676.15mm)
27.03"
(686.56mm)
-0.41"
(-10.41mm)
52nd Driest
Driest since:
1931
76th Wettest
Wettest since:
2019
Jun 1912–May 1913
12-Month
29.33"
(744.98mm)
29.95"
(760.73mm)
-0.62"
(-15.75mm)
45th Driest
Driest since:
1934
83rd Wettest
Wettest since:
2019
Dec 1911–May 1913
18-Month
45.75"
(1,162.05mm)
44.70"
(1,135.38mm)
1.05"
(26.67mm)
81st Driest
Driest since:
1931
46th Wettest
Wettest since:
2019
Jun 1911–May 1913
24-Month
61.22"
(1,554.99mm)
59.92"
(1,521.97mm)
1.30"
(33.02mm)
80th Driest
Driest since:
1931
47th Wettest
Wettest since:
2020
Jun 1910–May 1913
36-Month
87.30"
(2,217.42mm)
89.88"
(2,282.95mm)
-2.58"
(-65.53mm)
37th Driest
Driest since:
1955
89th Wettest
Wettest since:
2019
Jun 1909–May 1913
48-Month
115.27"
(2,927.86mm)
119.78"
(3,042.41mm)
-4.51"
(-114.55mm)
23rd Driest
Driest since:
1956
102nd Wettest
Wettest since:
2019
Jun 1908–May 1913
60-Month
144.59"
(3,672.59mm)
149.64"
(3,800.86mm)
-5.05"
(-128.27mm)
21st Driest
Driest since:
1957
103rd Wettest
Wettest since:
2020

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