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 1979

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2023)
Wettest/Driest
Since
Record
January 1979
1-Month
2.69"
(68.33mm)
4.53"
(115.06mm)
-1.84"
(-46.73mm)
10th Driest
Driest since:
1985
120th Wettest
Wettest since:
1953
Ties: 1957, 2005
Dec 1978–Jan 1979
2-Month
5.70"
(144.78mm)
9.17"
(232.92mm)
-3.47"
(-88.14mm)
11th Driest
Driest since:
1977
118th Wettest
Wettest since:
1965
Nov 1978–Jan 1979
3-Month
8.68"
(220.47mm)
13.53"
(343.66mm)
-4.85"
(-123.19mm)
10th Driest
Driest since:
1977
119th Wettest
Wettest since:
1974
Oct 1978–Jan 1979
4-Month
9.06"
(230.12mm)
16.08"
(408.43mm)
-7.02"
(-178.31mm)
4th Driest
Driest since:
1977
125th Wettest
Wettest since:
1997
Sep 1978–Jan 1979
5-Month
11.75"
(298.45mm)
17.50"
(444.50mm)
-5.75"
(-146.05mm)
8th Driest
Driest since:
1977
121st Wettest
Wettest since:
1974
Aug 1978–Jan 1979
6-Month
13.47"
(342.14mm)
18.31"
(465.07mm)
-4.84"
(-122.93mm)
11th Driest
Driest since:
1977
118th Wettest
Wettest since:
1974
Jul 1978–Jan 1979
7-Month
14.61"
(371.09mm)
19.04"
(483.62mm)
-4.43"
(-112.53mm)
14th Driest
Driest since:
1977
115th Wettest
Wettest since:
1956
Jun 1978–Jan 1979
8-Month
15.77"
(400.56mm)
20.76"
(527.30mm)
-4.99"
(-126.74mm)
9th Driest
Driest since:
1977
120th Wettest
Wettest since:
1956
May 1978–Jan 1979
9-Month
18.04"
(458.22mm)
22.91"
(581.91mm)
-4.87"
(-123.69mm)
14th Driest
Driest since:
1977
115th Wettest
Wettest since:
1997
Apr 1978–Jan 1979
10-Month
21.97"
(558.04mm)
25.27"
(641.86mm)
-3.30"
(-83.82mm)
28th Driest
Driest since:
1977
101st Wettest
Wettest since:
1997
Mar 1978–Jan 1979
11-Month
24.16"
(613.66mm)
28.53"
(724.66mm)
-4.37"
(-111.00mm)
19th Driest
Driest since:
1977
110th Wettest
Wettest since:
1997
Feb 1978–Jan 1979
12-Month
27.42"
(696.47mm)
32.13"
(816.10mm)
-4.71"
(-119.63mm)
19th Driest
Driest since:
1977
110th Wettest
Wettest since:
1997
Aug 1977–Jan 1979
18-Month
50.66"
(1,286.76mm)
50.47"
(1,281.94mm)
0.19"
(4.82mm)
68th Driest
Driest since:
1930
60th Wettest
Wettest since:
1997
Feb 1977–Jan 1979
24-Month
61.99"
(1,574.55mm)
64.28"
(1,632.71mm)
-2.29"
(-58.16mm)
50th Driest
Driest since:
1931
78th Wettest
Wettest since:
1997
Feb 1976–Jan 1979
36-Month
83.57"
(2,122.68mm)
96.31"
(2,446.27mm)
-12.74"
(-323.59mm)
7th Driest
Driest since:
1931
120th Wettest
Wettest since:
1998
Feb 1975–Jan 1979
48-Month
120.49"
(3,060.45mm)
128.35"
(3,260.09mm)
-7.86"
(-199.64mm)
29th Driest
Driest since:
1932
97th Wettest
Wettest since:
1999
Feb 1974–Jan 1979
60-Month
152.38"
(3,870.45mm)
160.30"
(4,071.62mm)
-7.92"
(-201.17mm)
28th Driest
Driest since:
1933
97th Wettest
Wettest since:
2000

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