Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. 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, December 1945

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Wettest/Driest
Since
Record
December 1945
1-Month
5.55"
(140.97mm)
4.63"
(117.60mm)
0.92"
(23.37mm)
87th Driest
Driest since:
1976
42nd Wettest
Wettest since:
1964
Ties: 1931
Nov–Dec 1945
2-Month
11.73"
(297.94mm)
8.97"
(227.84mm)
2.76"
(70.10mm)
110th Driest
Driest since:
1976
19th Wettest
Wettest since:
1996
Oct–Dec 1945
3-Month
13.78"
(350.01mm)
11.51"
(292.35mm)
2.27"
(57.66mm)
97th Driest
Driest since:
1976
32nd Wettest
Wettest since:
1996
Sep–Dec 1945
4-Month
15.81"
(401.57mm)
12.93"
(328.42mm)
2.88"
(73.15mm)
106th Driest
Driest since:
1976
23rd Wettest
Wettest since:
1996
Aug–Dec 1945
5-Month
16.40"
(416.56mm)
13.73"
(348.74mm)
2.67"
(67.82mm)
99th Driest
Driest since:
1936
30th Wettest
Wettest since:
1996
Jul–Dec 1945
6-Month
16.71"
(424.43mm)
14.46"
(367.28mm)
2.25"
(57.15mm)
97th Driest
Driest since:
1936
32nd Wettest
Wettest since:
1996
Jun–Dec 1945
7-Month
18.10"
(459.74mm)
16.18"
(410.97mm)
1.92"
(48.77mm)
94th Driest
Driest since:
1976
35th Wettest
Wettest since:
1996
May–Dec 1945
8-Month
21.80"
(553.72mm)
18.32"
(465.33mm)
3.48"
(88.39mm)
105th Driest
Driest since:
1935
24th Wettest
Wettest since:
1996
Apr–Dec 1945
9-Month
24.03"
(610.36mm)
20.67"
(525.02mm)
3.36"
(85.34mm)
106th Driest
Driest since:
1976
23rd Wettest
Wettest since:
1996
Mar–Dec 1945
10-Month
28.37"
(720.60mm)
23.93"
(607.82mm)
4.44"
(112.78mm)
112th Driest
Driest since:
1976
17th Wettest
Wettest since:
1996
Feb–Dec 1945
11-Month
32.88"
(835.15mm)
27.54"
(699.52mm)
5.34"
(135.63mm)
112th Driest
Driest since:
1935
17th Wettest
Wettest since:
1996
Jan–Dec 1945
12-Month
36.43"
(925.32mm)
32.07"
(814.58mm)
4.36"
(110.74mm)
106th Driest
Driest since:
1929
23rd Wettest
Wettest since:
1996
Jul 1944–Dec 1945
18-Month
46.31"
(1,176.27mm)
46.58"
(1,183.13mm)
-0.27"
(-6.86mm)
64th Driest
Driest since:
1929
64th Wettest
Wettest since:
1996
Jan 1944–Dec 1945
24-Month
61.21"
(1,554.73mm)
64.19"
(1,630.43mm)
-2.98"
(-75.70mm)
44th Driest
Driest since:
1930
84th Wettest
Wettest since:
1996
Jan 1943–Dec 1945
36-Month
88.45"
(2,246.63mm)
96.33"
(2,446.78mm)
-7.88"
(-200.15mm)
23rd Driest
Driest since:
1930
104th Wettest
Wettest since:
1997
Jan 1942–Dec 1945
48-Month
122.24"
(3,104.90mm)
128.33"
(3,259.58mm)
-6.09"
(-154.68mm)
31st Driest
Driest since:
1931
95th Wettest
Wettest since:
1998
Ties: 1928
Jan 1941–Dec 1945
60-Month
155.87"
(3,959.10mm)
160.34"
(4,072.64mm)
-4.47"
(-113.54mm)
43rd Driest
Driest since:
1932
82nd Wettest
Wettest since:
1999

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