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 1904

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 1904
1-Month
2.59"
(65.79mm)
2.91"
(73.91mm)
-0.32"
(-8.12mm)
29th Driest
Driest since:
1934
100th Wettest
Wettest since:
2019
Ties: 1910, 1918
Apr–May 1904
2-Month
4.71"
(119.63mm)
5.43"
(137.92mm)
-0.72"
(-18.29mm)
19th Driest
Driest since:
1934
110th Wettest
Wettest since:
1957
Mar–May 1904
3-Month
7.81"
(198.37mm)
7.94"
(201.68mm)
-0.13"
(-3.31mm)
59th Driest
Driest since:
1925
70th Wettest
Wettest since:
1957, 1991
Feb–May 1904
4-Month
10.24"
(260.10mm)
10.07"
(255.78mm)
0.17"
(4.32mm)
76th Driest
Driest since:
1925
53rd Wettest
Wettest since:
2019
Jan–May 1904
5-Month
12.05"
(306.07mm)
12.39"
(314.71mm)
-0.34"
(-8.64mm)
59th Driest
Driest since:
1934
70th Wettest
Wettest since:
2019
Dec 1903–May 1904
6-Month
13.49"
(342.65mm)
14.73"
(374.14mm)
-1.24"
(-31.49mm)
23rd Driest
Driest since:
1931
105th Wettest
Wettest since:
2019
Nov 1903–May 1904
7-Month
15.32"
(389.13mm)
16.96"
(430.78mm)
-1.64"
(-41.65mm)
15th Driest
Driest since:
1934
113th Wettest
Wettest since:
1983
Oct 1903–May 1904
8-Month
17.09"
(434.09mm)
19.13"
(485.90mm)
-2.04"
(-51.81mm)
17th Driest
Driest since:
1934
111th Wettest
Wettest since:
2019
Sep 1903–May 1904
9-Month
19.21"
(487.93mm)
21.62"
(549.15mm)
-2.41"
(-61.22mm)
14th Driest
Driest since:
1934
114th Wettest
Wettest since:
2019
Aug 1903–May 1904
10-Month
22.25"
(565.15mm)
24.25"
(615.95mm)
-2.00"
(-50.80mm)
19th Driest
Driest since:
1918
109th Wettest
Wettest since:
2019
Jul 1903–May 1904
11-Month
25.22"
(640.59mm)
27.03"
(686.56mm)
-1.81"
(-45.97mm)
23rd Driest
Driest since:
1931
105th Wettest
Wettest since:
2019
Jun 1903–May 1904
12-Month
28.10"
(713.74mm)
29.95"
(760.73mm)
-1.85"
(-46.99mm)
25th Driest
Driest since:
1934
103rd Wettest
Wettest since:
2019
Dec 1902–May 1904
18-Month
44.34"
(1,126.24mm)
44.70"
(1,135.38mm)
-0.36"
(-9.14mm)
54th Driest
Driest since:
1931
73rd Wettest
Wettest since:
2019
Jun 1902–May 1904
24-Month
60.28"
(1,531.11mm)
59.92"
(1,521.97mm)
0.36"
(9.14mm)
65th Driest
Driest since:
1931
62nd Wettest
Wettest to Date
2020
Jun 1901–May 1904
36-Month
88.07"
(2,236.98mm)
89.88"
(2,282.95mm)
-1.81"
(-45.97mm)
41st Driest
Driest since:
1955
85th Wettest
Wettest since:
2019
Jun 1900–May 1904
48-Month
117.90"
(2,994.66mm)
119.78"
(3,042.41mm)
-1.88"
(-47.75mm)
45th Driest
Driest since:
1956
80th Wettest
Wettest since:
2019
Jun 1899–May 1904
60-Month
146.78"
(3,728.21mm)
149.64"
(3,800.86mm)
-2.86"
(-72.65mm)
35th Driest
Driest since:
1957
89th Wettest
Wettest since:
2020

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