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 1957

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 1957
1-Month
6.00"
(152.40mm)
4.63"
(117.60mm)
1.37"
(34.80mm)
101st Driest
Driest since:
1976
27th Wettest
Wettest since:
1964
Nov–Dec 1957
2-Month
8.52"
(216.41mm)
8.97"
(227.84mm)
-0.45"
(-11.43mm)
57th Driest
Driest since:
1976
71st Wettest
Wettest since:
1996
Ties: 1949
Oct–Dec 1957
3-Month
11.62"
(295.15mm)
11.51"
(292.35mm)
0.11"
(2.80mm)
64th Driest
Driest since:
1976
64th Wettest
Wettest since:
1996
Sep–Dec 1957
4-Month
12.41"
(315.21mm)
12.93"
(328.42mm)
-0.52"
(-13.21mm)
58th Driest
Driest since:
1976
70th Wettest
Wettest since:
1996
Aug–Dec 1957
5-Month
13.07"
(331.98mm)
13.73"
(348.74mm)
-0.66"
(-16.76mm)
54th Driest
Driest since:
1936
74th Wettest
Wettest since:
1996
Jul–Dec 1957
6-Month
13.58"
(344.93mm)
14.46"
(367.28mm)
-0.88"
(-22.35mm)
52nd Driest
Driest since:
1936
76th Wettest
Wettest since:
1996
Ties: 1960
Jun–Dec 1957
7-Month
14.96"
(379.98mm)
16.18"
(410.97mm)
-1.22"
(-30.99mm)
51st Driest
Driest since:
1976
77th Wettest
Wettest since:
1996
May–Dec 1957
8-Month
18.60"
(472.44mm)
18.32"
(465.33mm)
0.28"
(7.11mm)
69th Driest
Driest since:
1935
59th Wettest
Wettest since:
1996
Apr–Dec 1957
9-Month
20.71"
(526.03mm)
20.67"
(525.02mm)
0.04"
(1.01mm)
68th Driest
Driest since:
1976
60th Wettest
Wettest since:
1996
Ties: 1903
Mar–Dec 1957
10-Month
25.88"
(657.35mm)
23.93"
(607.82mm)
1.95"
(49.53mm)
89th Driest
Driest since:
1976
39th Wettest
Wettest since:
1996
Feb–Dec 1957
11-Month
29.99"
(761.75mm)
27.54"
(699.52mm)
2.45"
(62.23mm)
92nd Driest
Driest since:
1935
36th Wettest
Wettest since:
1996
Jan–Dec 1957
12-Month
32.68"
(830.07mm)
32.07"
(814.58mm)
0.61"
(15.49mm)
75th Driest
Driest since:
1929
53rd Wettest
Wettest since:
1996
Jul 1956–Dec 1957
18-Month
45.89"
(1,165.61mm)
46.58"
(1,183.13mm)
-0.69"
(-17.52mm)
61st Driest
Driest since:
1929
66th Wettest
Wettest since:
1996
Jan 1956–Dec 1957
24-Month
65.35"
(1,659.89mm)
64.19"
(1,630.43mm)
1.16"
(29.46mm)
68th Driest
Driest since:
1930
59th Wettest
Wettest since:
1996
Jan 1955–Dec 1957
36-Month
101.91"
(2,588.51mm)
96.33"
(2,446.78mm)
5.58"
(141.73mm)
103rd Driest
Driest since:
1930
23rd Wettest
Wettest since:
1997
Jan 1954–Dec 1957
48-Month
133.10"
(3,380.74mm)
128.33"
(3,259.58mm)
4.77"
(121.16mm)
94th Driest
Driest since:
1931
31st Wettest
Wettest since:
1998
Jan 1953–Dec 1957
60-Month
171.05"
(4,344.67mm)
160.34"
(4,072.64mm)
10.71"
(272.03mm)
109th Driest
Driest since:
1932
15th Wettest
Wettest since:
1999

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