Statewide Rankings

Statewide Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Washington

Precipitation Rankings, May 1951

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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 1951
1-Month
2.11"
(53.59mm)
2.25"
(57.15mm)
-0.14"
(-3.56mm)
63rd Driest
Driest since:
1924
66th Wettest
Wettest since:
1948
Ties: 1975
Apr–May 1951
2-Month
2.93"
(74.42mm)
5.08"
(129.03mm)
-2.15"
(-54.61mm)
8th Driest
Driest since:
1924
121st Wettest
Wettest since:
1948
Mar–May 1951
3-Month
7.40"
(187.96mm)
9.23"
(234.44mm)
-1.83"
(-46.48mm)
23rd Driest
Driest since:
1924
106th Wettest
Wettest since:
2011
Ties: 1906
Feb–May 1951
4-Month
14.27"
(362.46mm)
13.96"
(354.58mm)
0.31"
(7.88mm)
76th Driest
Driest since:
1973
53rd Wettest
Wettest since:
2017
Jan–May 1951
5-Month
22.19"
(563.63mm)
20.03"
(508.76mm)
2.16"
(54.87mm)
93rd Driest
Driest since:
1985
36th Wettest
Wettest since:
1961
Dec 1950–May 1951
6-Month
29.41"
(747.01mm)
26.54"
(674.12mm)
2.87"
(72.89mm)
92nd Driest
Driest since:
1985
36th Wettest
Wettest since:
1997
Nov 1950–May 1951
7-Month
36.80"
(934.72mm)
32.67"
(829.82mm)
4.13"
(104.90mm)
99th Driest
Driest since:
1977
29th Wettest
Wettest since:
1974
Oct 1950–May 1951
8-Month
44.78"
(1,137.41mm)
36.36"
(923.54mm)
8.42"
(213.87mm)
119th Driest
Driest since:
1977
9th Wettest
Wettest since:
1974
Sep 1950–May 1951
9-Month
45.97"
(1,167.64mm)
38.32"
(973.33mm)
7.65"
(194.31mm)
114th Driest
Driest since:
1977
14th Wettest
Wettest since:
1974
Aug 1950–May 1951
10-Month
47.17"
(1,198.12mm)
39.35"
(999.49mm)
7.82"
(198.63mm)
113th Driest
Driest since:
1977
15th Wettest
Wettest since:
1974
Jul 1950–May 1951
11-Month
48.11"
(1,221.99mm)
40.24"
(1,022.10mm)
7.87"
(199.89mm)
115th Driest
Driest since:
1977
13th Wettest
Wettest since:
1974
Jun 1950–May 1951
12-Month
50.21"
(1,275.33mm)
42.13"
(1,070.10mm)
8.08"
(205.23mm)
115th Driest
Driest since:
1977
13th Wettest
Wettest since:
1974
Dec 1949–May 1951
18-Month
83.43"
(2,119.12mm)
68.67"
(1,744.22mm)
14.76"
(374.90mm)
121st Driest
Driest since:
1930
6th Wettest
Wettest to Date
1997
Jun 1949–May 1951
24-Month
98.59"
(2,504.19mm)
84.30"
(2,141.22mm)
14.29"
(362.97mm)
121st Driest
Driest since:
1930
6th Wettest
Wettest to Date
1997
Jun 1948–May 1951
36-Month
143.44"
(3,643.38mm)
126.40"
(3,210.56mm)
17.04"
(432.82mm)
117th Driest
Driest since:
1931
9th Wettest
Wettest since:
1998
Jun 1947–May 1951
48-Month
194.19"
(4,932.43mm)
168.49"
(4,279.65mm)
25.70"
(652.78mm)
121st Driest
Driest since:
1931
4th Wettest
Wettest to Date
1999
Jun 1946–May 1951
60-Month
233.39"
(5,928.11mm)
210.48"
(5,346.19mm)
22.91"
(581.92mm)
119th Driest
Driest since:
1930
5th Wettest
Wettest to Date
1999

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