Regional Rankings

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

Northwest Climate Region

Precipitation Rankings, January 1949

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
January 1949
1-Month
1.39"
(35.31mm)
4.53"
(115.06mm)
-3.14"
(-79.75mm)
2nd Driest
Driest since:
1985
127th Wettest
Wettest since:
1953
Dec 1948–Jan 1949
2-Month
7.44"
(188.98mm)
9.17"
(232.92mm)
-1.73"
(-43.94mm)
34th Driest
Driest since:
1977
94th Wettest
Wettest since:
1965
Nov 1948–Jan 1949
3-Month
12.60"
(320.04mm)
13.53"
(343.66mm)
-0.93"
(-23.62mm)
52nd Driest
Driest since:
1977
76th Wettest
Wettest since:
1974
Oct 1948–Jan 1949
4-Month
14.30"
(363.22mm)
16.08"
(408.43mm)
-1.78"
(-45.21mm)
40th Driest
Driest since:
1977
88th Wettest
Wettest since:
1997
Sep 1948–Jan 1949
5-Month
16.21"
(411.73mm)
17.50"
(444.50mm)
-1.29"
(-32.77mm)
49th Driest
Driest since:
1977
79th Wettest
Wettest since:
1974
Aug 1948–Jan 1949
6-Month
17.23"
(437.64mm)
18.31"
(465.07mm)
-1.08"
(-27.43mm)
53rd Driest
Driest since:
1977
75th Wettest
Wettest since:
1974
Ties: 1963
Jul 1948–Jan 1949
7-Month
18.44"
(468.38mm)
19.04"
(483.62mm)
-0.60"
(-15.24mm)
60th Driest
Driest since:
1977
68th Wettest
Wettest since:
1956
Ties: 2004
Jun 1948–Jan 1949
8-Month
21.22"
(538.99mm)
20.76"
(527.30mm)
0.46"
(11.69mm)
73rd Driest
Driest since:
1977
55th Wettest
Wettest since:
1956
May 1948–Jan 1949
9-Month
25.26"
(641.60mm)
22.91"
(581.91mm)
2.35"
(59.69mm)
93rd Driest
Driest since:
1977
35th Wettest
Wettest since:
1997
Apr 1948–Jan 1949
10-Month
28.65"
(727.71mm)
25.27"
(641.86mm)
3.38"
(85.85mm)
100th Driest
Driest since:
1977
28th Wettest
Wettest since:
1997
Mar 1948–Jan 1949
11-Month
31.64"
(803.66mm)
28.53"
(724.66mm)
3.11"
(79.00mm)
97th Driest
Driest since:
1977
31st Wettest
Wettest since:
1997
Feb 1948–Jan 1949
12-Month
36.19"
(919.23mm)
32.13"
(816.10mm)
4.06"
(103.13mm)
107th Driest
Driest since:
1977
21st Wettest
Wettest since:
1997
Aug 1947–Jan 1949
18-Month
55.21"
(1,402.33mm)
50.47"
(1,281.94mm)
4.74"
(120.39mm)
103rd Driest
Driest since:
1930
24th Wettest
Wettest since:
1997
Feb 1947–Jan 1949
24-Month
67.95"
(1,725.93mm)
64.28"
(1,632.71mm)
3.67"
(93.22mm)
93rd Driest
Driest since:
1931
34th Wettest
Wettest since:
1997
Ties: 1914
Feb 1946–Jan 1949
36-Month
100.14"
(2,543.56mm)
96.31"
(2,446.27mm)
3.83"
(97.29mm)
90th Driest
Driest since:
1931
36th Wettest
Wettest since:
1998
Feb 1945–Jan 1949
48-Month
137.51"
(3,492.75mm)
128.35"
(3,260.09mm)
9.16"
(232.66mm)
107th Driest
Driest since:
1932
18th Wettest
Wettest to Date
1999
Feb 1944–Jan 1949
60-Month
163.38"
(4,149.85mm)
160.30"
(4,071.62mm)
3.08"
(78.23mm)
79th Driest
Driest since:
1933
45th Wettest
Wettest since:
2000
Ties: 2016

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