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 1975

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 1975
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: 1951
Apr–May 1975
2-Month
4.38"
(111.25mm)
5.08"
(129.03mm)
-0.70"
(-17.78mm)
40th Driest
Driest since:
1924
89th Wettest
Wettest since:
1948
Mar–May 1975
3-Month
8.45"
(214.63mm)
9.23"
(234.44mm)
-0.78"
(-19.81mm)
47th Driest
Driest since:
1924
82nd Wettest
Wettest since:
2011
Feb–May 1975
4-Month
13.94"
(354.08mm)
13.96"
(354.58mm)
-0.02"
(-0.50mm)
66th Driest
Driest since:
1973
63rd Wettest
Wettest since:
2017
Jan–May 1975
5-Month
21.92"
(556.77mm)
20.03"
(508.76mm)
1.89"
(48.01mm)
86th Driest
Driest since:
1985
43rd Wettest
Wettest since:
1961
Dec 1974–May 1975
6-Month
29.86"
(758.44mm)
26.54"
(674.12mm)
3.32"
(84.32mm)
97th Driest
Driest since:
1985
31st Wettest
Wettest since:
1997
Nov 1974–May 1975
7-Month
36.07"
(916.18mm)
32.67"
(829.82mm)
3.40"
(86.36mm)
89th Driest
Driest since:
1977
39th Wettest
Wettest since:
1974
Oct 1974–May 1975
8-Month
37.07"
(941.58mm)
36.36"
(923.54mm)
0.71"
(18.04mm)
67th Driest
Driest since:
1977
61st Wettest
Wettest since:
1974
Sep 1974–May 1975
9-Month
37.58"
(954.53mm)
38.32"
(973.33mm)
-0.74"
(-18.80mm)
58th Driest
Driest since:
1977
70th Wettest
Wettest since:
1974
Aug 1974–May 1975
10-Month
37.82"
(960.63mm)
39.35"
(999.49mm)
-1.53"
(-38.86mm)
50th Driest
Driest since:
1977
78th Wettest
Wettest since:
1974
Jul 1974–May 1975
11-Month
39.80"
(1,010.92mm)
40.24"
(1,022.10mm)
-0.44"
(-11.18mm)
59th Driest
Driest since:
1977
69th Wettest
Wettest since:
1974
Jun 1974–May 1975
12-Month
41.20"
(1,046.48mm)
42.13"
(1,070.10mm)
-0.93"
(-23.62mm)
56th Driest
Driest since:
1977
72nd Wettest
Wettest since:
1974
Dec 1973–May 1975
18-Month
78.92"
(2,004.57mm)
68.67"
(1,744.22mm)
10.25"
(260.35mm)
114th Driest
Driest since:
1930
13th Wettest
Wettest since:
1997
Jun 1973–May 1975
24-Month
97.74"
(2,482.60mm)
84.30"
(2,141.22mm)
13.44"
(341.38mm)
117th Driest
Driest since:
1930
10th Wettest
Wettest since:
1997
Jun 1972–May 1975
36-Month
132.86"
(3,374.64mm)
126.40"
(3,210.56mm)
6.46"
(164.08mm)
88th Driest
Driest since:
1931
38th Wettest
Wettest since:
1998
Jun 1971–May 1975
48-Month
184.70"
(4,691.38mm)
168.49"
(4,279.65mm)
16.21"
(411.73mm)
112th Driest
Driest since:
1931
13th Wettest
Wettest since:
1999
Jun 1970–May 1975
60-Month
231.18"
(5,871.97mm)
210.48"
(5,346.19mm)
20.70"
(525.78mm)
115th Driest
Driest since:
1930
9th Wettest
Wettest since:
1999

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