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 1987

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 1987
1-Month
3.97"
(100.84mm)
4.53"
(115.06mm)
-0.56"
(-14.22mm)
54th Driest
Driest since:
1985
75th Wettest
Wettest since:
1953
Dec 1986–Jan 1987
2-Month
6.02"
(152.91mm)
9.17"
(232.92mm)
-3.15"
(-80.01mm)
13th Driest
Driest since:
1977
115th Wettest
Wettest since:
1965
Ties: 1960
Nov 1986–Jan 1987
3-Month
10.87"
(276.10mm)
13.53"
(343.66mm)
-2.66"
(-67.56mm)
28th Driest
Driest since:
1977
100th Wettest
Wettest since:
1974
Oct 1986–Jan 1987
4-Month
12.46"
(316.48mm)
16.08"
(408.43mm)
-3.62"
(-91.95mm)
20th Driest
Driest since:
1977
108th Wettest
Wettest since:
1997
Sep 1986–Jan 1987
5-Month
15.52"
(394.21mm)
17.50"
(444.50mm)
-1.98"
(-50.29mm)
38th Driest
Driest since:
1977
90th Wettest
Wettest since:
1974
Aug 1986–Jan 1987
6-Month
15.95"
(405.13mm)
18.31"
(465.07mm)
-2.36"
(-59.94mm)
31st Driest
Driest since:
1977
97th Wettest
Wettest since:
1974
Jul 1986–Jan 1987
7-Month
16.88"
(428.75mm)
19.04"
(483.62mm)
-2.16"
(-54.87mm)
37th Driest
Driest since:
1977
91st Wettest
Wettest since:
1956
Jun 1986–Jan 1987
8-Month
17.73"
(450.34mm)
20.76"
(527.30mm)
-3.03"
(-76.96mm)
29th Driest
Driest since:
1977
99th Wettest
Wettest since:
1956
May 1986–Jan 1987
9-Month
20.03"
(508.76mm)
22.91"
(581.91mm)
-2.88"
(-73.15mm)
27th Driest
Driest since:
1977
101st Wettest
Wettest since:
1997
Apr 1986–Jan 1987
10-Month
22.31"
(566.67mm)
25.27"
(641.86mm)
-2.96"
(-75.19mm)
30th Driest
Driest since:
1977
98th Wettest
Wettest since:
1997
Mar 1986–Jan 1987
11-Month
25.30"
(642.62mm)
28.53"
(724.66mm)
-3.23"
(-82.04mm)
31st Driest
Driest since:
1977
97th Wettest
Wettest since:
1997
Feb 1986–Jan 1987
12-Month
31.90"
(810.26mm)
32.13"
(816.10mm)
-0.23"
(-5.84mm)
61st Driest
Driest since:
1977
67th Wettest
Wettest since:
1997
Aug 1985–Jan 1987
18-Month
49.08"
(1,246.63mm)
50.47"
(1,281.94mm)
-1.39"
(-35.31mm)
54th Driest
Driest since:
1930
73rd Wettest
Wettest since:
1997
Feb 1985–Jan 1987
24-Month
59.99"
(1,523.75mm)
64.28"
(1,632.71mm)
-4.29"
(-108.96mm)
35th Driest
Driest since:
1931
92nd Wettest
Wettest since:
1997
Feb 1984–Jan 1987
36-Month
94.54"
(2,401.32mm)
96.31"
(2,446.27mm)
-1.77"
(-44.95mm)
53rd Driest
Driest since:
1931
73rd Wettest
Wettest since:
1998
Feb 1983–Jan 1987
48-Month
134.80"
(3,423.92mm)
128.35"
(3,260.09mm)
6.45"
(163.83mm)
101st Driest
Driest since:
1932
24th Wettest
Wettest since:
1999
Feb 1982–Jan 1987
60-Month
172.39"
(4,378.71mm)
160.30"
(4,071.62mm)
12.09"
(307.09mm)
112th Driest
Driest since:
1933
12th Wettest
Wettest since:
2000
Ties: 1975

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