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 1955

View Period (Months):
Download: csv json xml
  • Record Driest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 1955
1-Month
2.92"
(74.17mm)
2.91"
(73.91mm)
0.01"
(0.26mm)
62nd Driest
Driest since:
1934
67th Wettest
Wettest since:
2019
Ties: 1971
Apr–May 1955
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, 1946
Mar–May 1955
3-Month
7.39"
(187.71mm)
7.94"
(201.68mm)
-0.55"
(-13.97mm)
34th Driest
Driest since:
1925
95th Wettest
Wettest since:
1957, 1991
Ties: 1965
Feb–May 1955
4-Month
9.61"
(244.09mm)
10.07"
(255.78mm)
-0.46"
(-11.69mm)
44th Driest
Driest since:
1925
85th Wettest
Wettest since:
2019
Ties: 1901, 1917
Jan–May 1955
5-Month
11.30"
(287.02mm)
12.39"
(314.71mm)
-1.09"
(-27.69mm)
21st Driest
Driest since:
1934
108th Wettest
Wettest since:
2019
Ties: 1930
Dec 1954–May 1955
6-Month
13.30"
(337.82mm)
14.73"
(374.14mm)
-1.43"
(-36.32mm)
18th Driest
Driest since:
1931
110th Wettest
Wettest since:
2019
Nov 1954–May 1955
7-Month
14.84"
(376.94mm)
16.96"
(430.78mm)
-2.12"
(-53.84mm)
9th Driest
Driest since:
1934
119th Wettest
Wettest since:
1983
Oct 1954–May 1955
8-Month
17.19"
(436.63mm)
19.13"
(485.90mm)
-1.94"
(-49.27mm)
18th Driest
Driest since:
1934
110th Wettest
Wettest since:
2019
Sep 1954–May 1955
9-Month
19.14"
(486.16mm)
21.62"
(549.15mm)
-2.48"
(-62.99mm)
12th Driest
Driest since:
1934
116th Wettest
Wettest since:
2019
Aug 1954–May 1955
10-Month
21.66"
(550.16mm)
24.25"
(615.95mm)
-2.59"
(-65.79mm)
13th Driest
Driest since:
1918
115th Wettest
Wettest since:
2019
Ties: 1981
Jul 1954–May 1955
11-Month
23.67"
(601.22mm)
27.03"
(686.56mm)
-3.36"
(-85.34mm)
10th Driest
Driest since:
1931
118th Wettest
Wettest since:
2019
Jun 1954–May 1955
12-Month
26.17"
(664.72mm)
29.95"
(760.73mm)
-3.78"
(-96.01mm)
9th Driest
Driest since:
1934
119th Wettest
Wettest since:
2019
Dec 1953–May 1955
18-Month
39.95"
(1,014.73mm)
44.70"
(1,135.38mm)
-4.75"
(-120.65mm)
8th Driest
Driest since:
1931
119th Wettest
Wettest since:
2019
Jun 1953–May 1955
24-Month
52.23"
(1,326.64mm)
59.92"
(1,521.97mm)
-7.69"
(-195.33mm)
2nd Driest
Driest since:
1931
125th Wettest
Wettest since:
2020
Jun 1952–May 1955
36-Month
79.64"
(2,022.86mm)
89.88"
(2,282.95mm)
-10.24"
(-260.09mm)
1st Driest
Driest since:
1955
125th Wettest
Wettest since:
2019
Jun 1951–May 1955
48-Month
111.42"
(2,830.07mm)
119.78"
(3,042.41mm)
-8.36"
(-212.34mm)
5th Driest
Driest since:
1956
120th Wettest
Wettest since:
2019
Jun 1950–May 1955
60-Month
141.18"
(3,585.97mm)
149.64"
(3,800.86mm)
-8.46"
(-214.89mm)
7th Driest
Driest since:
1957
117th Wettest
Wettest since:
2020

Citing This Page