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 1934

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 1934
1-Month
1.81"
(45.97mm)
2.91"
(73.91mm)
-1.10"
(-27.94mm)
1st Driest
Driest since:
1934
128th Wettest
Wettest since:
2019
Apr–May 1934
2-Month
3.58"
(90.93mm)
5.43"
(137.92mm)
-1.85"
(-46.99mm)
1st Driest
Driest since:
1934
128th Wettest
Wettest since:
1957
Mar–May 1934
3-Month
5.92"
(150.37mm)
7.94"
(201.68mm)
-2.02"
(-51.31mm)
3rd Driest
Driest since:
1925
126th Wettest
Wettest since:
1957, 1991
Feb–May 1934
4-Month
7.57"
(192.28mm)
10.07"
(255.78mm)
-2.50"
(-63.50mm)
2nd Driest
Driest since:
1925
127th Wettest
Wettest since:
2019
Jan–May 1934
5-Month
9.39"
(238.51mm)
12.39"
(314.71mm)
-3.00"
(-76.20mm)
1st Driest
Driest since:
1934
128th Wettest
Wettest since:
2019
Dec 1933–May 1934
6-Month
12.05"
(306.07mm)
14.73"
(374.14mm)
-2.68"
(-68.07mm)
3rd Driest
Driest since:
1931
125th Wettest
Wettest since:
2019
Nov 1933–May 1934
7-Month
13.10"
(332.74mm)
16.96"
(430.78mm)
-3.86"
(-98.04mm)
1st Driest
Driest since:
1934
127th Wettest
Wettest since:
1983
Oct 1933–May 1934
8-Month
14.76"
(374.90mm)
19.13"
(485.90mm)
-4.37"
(-111.00mm)
1st Driest
Driest since:
1934
127th Wettest
Wettest since:
2019
Sep 1933–May 1934
9-Month
17.16"
(435.86mm)
21.62"
(549.15mm)
-4.46"
(-113.29mm)
1st Driest
Driest since:
1934
127th Wettest
Wettest since:
2019
Aug 1933–May 1934
10-Month
20.02"
(508.51mm)
24.25"
(615.95mm)
-4.23"
(-107.44mm)
2nd Driest
Driest since:
1918
126th Wettest
Wettest since:
2019
Jul 1933–May 1934
11-Month
22.85"
(580.39mm)
27.03"
(686.56mm)
-4.18"
(-106.17mm)
4th Driest
Driest since:
1931
124th Wettest
Wettest since:
2019
Jun 1933–May 1934
12-Month
24.30"
(617.22mm)
29.95"
(760.73mm)
-5.65"
(-143.51mm)
1st Driest
Driest since:
1934
127th Wettest
Wettest since:
2019
Dec 1932–May 1934
18-Month
39.81"
(1,011.17mm)
44.70"
(1,135.38mm)
-4.89"
(-124.21mm)
7th Driest
Driest since:
1931
120th Wettest
Wettest since:
2019
Jun 1932–May 1934
24-Month
54.98"
(1,396.49mm)
59.92"
(1,521.97mm)
-4.94"
(-125.48mm)
12th Driest
Driest since:
1931
115th Wettest
Wettest since:
2020
Jun 1931–May 1934
36-Month
84.78"
(2,153.41mm)
89.88"
(2,282.95mm)
-5.10"
(-129.54mm)
15th Driest
Driest since:
1955
111th Wettest
Wettest since:
2019
Jun 1930–May 1934
48-Month
109.13"
(2,771.90mm)
119.78"
(3,042.41mm)
-10.65"
(-270.51mm)
3rd Driest
Driest since:
1956
122nd Wettest
Wettest since:
2019
Jun 1929–May 1934
60-Month
136.95"
(3,478.53mm)
149.64"
(3,800.86mm)
-12.69"
(-322.33mm)
2nd Driest
Driest since:
1957
122nd Wettest
Wettest since:
2020

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