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 1988

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 1988
1-Month
3.96"
(100.58mm)
4.53"
(115.06mm)
-0.57"
(-14.48mm)
53rd Driest
Driest since:
1985
76th Wettest
Wettest since:
1953
Dec 1987–Jan 1988
2-Month
9.67"
(245.62mm)
9.17"
(232.92mm)
0.50"
(12.70mm)
78th Driest
Driest since:
1977
50th Wettest
Wettest since:
1965
Nov 1987–Jan 1988
3-Month
12.18"
(309.37mm)
13.53"
(343.66mm)
-1.35"
(-34.29mm)
43rd Driest
Driest since:
1977
85th Wettest
Wettest since:
1974
Ties: 1961
Oct 1987–Jan 1988
4-Month
12.35"
(313.69mm)
16.08"
(408.43mm)
-3.73"
(-94.74mm)
19th Driest
Driest since:
1977
109th Wettest
Wettest since:
1997
Sep 1987–Jan 1988
5-Month
12.59"
(319.79mm)
17.50"
(444.50mm)
-4.91"
(-124.71mm)
10th Driest
Driest since:
1977
118th Wettest
Wettest since:
1974
Aug 1987–Jan 1988
6-Month
13.03"
(330.96mm)
18.31"
(465.07mm)
-5.28"
(-134.11mm)
9th Driest
Driest since:
1977
119th Wettest
Wettest since:
1974
Jul 1987–Jan 1988
7-Month
14.81"
(376.17mm)
19.04"
(483.62mm)
-4.23"
(-107.45mm)
16th Driest
Driest since:
1977
112th Wettest
Wettest since:
1956
Jun 1987–Jan 1988
8-Month
15.91"
(404.11mm)
20.76"
(527.30mm)
-4.85"
(-123.19mm)
11th Driest
Driest since:
1977
117th Wettest
Wettest since:
1956
May 1987–Jan 1988
9-Month
18.33"
(465.58mm)
22.91"
(581.91mm)
-4.58"
(-116.33mm)
18th Driest
Driest since:
1977
110th Wettest
Wettest since:
1997
Apr 1987–Jan 1988
10-Month
19.86"
(504.44mm)
25.27"
(641.86mm)
-5.41"
(-137.42mm)
9th Driest
Driest since:
1977
119th Wettest
Wettest since:
1997
Mar 1987–Jan 1988
11-Month
23.56"
(598.42mm)
28.53"
(724.66mm)
-4.97"
(-126.24mm)
14th Driest
Driest since:
1977
114th Wettest
Wettest since:
1997
Feb 1987–Jan 1988
12-Month
26.24"
(666.50mm)
32.13"
(816.10mm)
-5.89"
(-149.60mm)
13th Driest
Driest since:
1977
115th Wettest
Wettest since:
1997
Aug 1986–Jan 1988
18-Month
42.19"
(1,071.63mm)
50.47"
(1,281.94mm)
-8.28"
(-210.31mm)
8th Driest
Driest since:
1930
119th Wettest
Wettest since:
1997
Feb 1986–Jan 1988
24-Month
58.14"
(1,476.76mm)
64.28"
(1,632.71mm)
-6.14"
(-155.95mm)
18th Driest
Driest since:
1931
109th Wettest
Wettest since:
1997
Ties: 2022
Feb 1985–Jan 1988
36-Month
86.23"
(2,190.24mm)
96.31"
(2,446.27mm)
-10.08"
(-256.03mm)
10th Driest
Driest since:
1931
116th Wettest
Wettest since:
1998
Feb 1984–Jan 1988
48-Month
120.78"
(3,067.81mm)
128.35"
(3,260.09mm)
-7.57"
(-192.28mm)
29th Driest
Driest since:
1932
96th Wettest
Wettest since:
1999
Feb 1983–Jan 1988
60-Month
161.04"
(4,090.42mm)
160.30"
(4,071.62mm)
0.74"
(18.80mm)
66th Driest
Driest since:
1933
58th Wettest
Wettest since:
2000

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