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, December 1954

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
December 1954
1-Month
3.68"
(93.47mm)
4.63"
(117.60mm)
-0.95"
(-24.13mm)
40th Driest
Driest since:
1976
88th Wettest
Wettest since:
1964
Nov–Dec 1954
2-Month
7.18"
(182.37mm)
8.97"
(227.84mm)
-1.79"
(-45.47mm)
35th Driest
Driest since:
1976
93rd Wettest
Wettest since:
1996
Oct–Dec 1954
3-Month
8.83"
(224.28mm)
11.51"
(292.35mm)
-2.68"
(-68.07mm)
24th Driest
Driest since:
1976
104th Wettest
Wettest since:
1996
Sep–Dec 1954
4-Month
9.99"
(253.75mm)
12.93"
(328.42mm)
-2.94"
(-74.67mm)
21st Driest
Driest since:
1976
107th Wettest
Wettest since:
1996
Aug–Dec 1954
5-Month
11.41"
(289.81mm)
13.73"
(348.74mm)
-2.32"
(-58.93mm)
30th Driest
Driest since:
1936
98th Wettest
Wettest since:
1996
Jul–Dec 1954
6-Month
12.16"
(308.86mm)
14.46"
(367.28mm)
-2.30"
(-58.42mm)
33rd Driest
Driest since:
1936
95th Wettest
Wettest since:
1996
Jun–Dec 1954
7-Month
14.79"
(375.67mm)
16.18"
(410.97mm)
-1.39"
(-35.30mm)
50th Driest
Driest since:
1976
78th Wettest
Wettest since:
1996
May–Dec 1954
8-Month
16.06"
(407.92mm)
18.32"
(465.33mm)
-2.26"
(-57.41mm)
37th Driest
Driest since:
1935
91st Wettest
Wettest since:
1996
Ties: 1986
Apr–Dec 1954
9-Month
18.41"
(467.61mm)
20.67"
(525.02mm)
-2.26"
(-57.41mm)
37th Driest
Driest since:
1976
91st Wettest
Wettest since:
1996
Mar–Dec 1954
10-Month
20.90"
(530.86mm)
23.93"
(607.82mm)
-3.03"
(-76.96mm)
29th Driest
Driest since:
1976
99th Wettest
Wettest since:
1996
Feb–Dec 1954
11-Month
24.24"
(615.70mm)
27.54"
(699.52mm)
-3.30"
(-83.82mm)
30th Driest
Driest since:
1935
98th Wettest
Wettest since:
1996
Jan–Dec 1954
12-Month
31.19"
(792.23mm)
32.07"
(814.58mm)
-0.88"
(-22.35mm)
60th Driest
Driest since:
1929
68th Wettest
Wettest since:
1996
Jul 1953–Dec 1954
18-Month
45.30"
(1,150.62mm)
46.58"
(1,183.13mm)
-1.28"
(-32.51mm)
55th Driest
Driest since:
1929
72nd Wettest
Wettest since:
1996
Jan 1953–Dec 1954
24-Month
69.14"
(1,756.16mm)
64.19"
(1,630.43mm)
4.95"
(125.73mm)
105th Driest
Driest since:
1930
22nd Wettest
Wettest since:
1996
Jan 1952–Dec 1954
36-Month
93.33"
(2,370.58mm)
96.33"
(2,446.78mm)
-3.00"
(-76.20mm)
39th Driest
Driest since:
1930
87th Wettest
Wettest since:
1997
Jan 1951–Dec 1954
48-Month
128.21"
(3,256.53mm)
128.33"
(3,259.58mm)
-0.12"
(-3.05mm)
68th Driest
Driest since:
1931
57th Wettest
Wettest since:
1998
Jan 1950–Dec 1954
60-Month
168.27"
(4,274.06mm)
160.34"
(4,072.64mm)
7.93"
(201.42mm)
105th Driest
Driest since:
1932
19th Wettest
Wettest since:
1999

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