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, October 2019

View Period (Months):
Download: csv json xml
  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
October 2019
1-Month
2.18"
(55.37mm)
2.54"
(64.52mm)
-0.36"
(-9.15mm)
49th Driest
Driest since:
1895
80th Wettest
Wettest since:
2016
Sep–Oct 2019
2-Month
4.92"
(124.97mm)
3.96"
(100.58mm)
0.96"
(24.39mm)
99th Driest
Driest since:
1987
30th Wettest
Wettest since:
2016
Aug–Oct 2019
3-Month
5.64"
(143.26mm)
4.76"
(120.90mm)
0.88"
(22.36mm)
93rd Driest
Driest since:
1987
36th Wettest
Wettest since:
2016
Jul–Oct 2019
4-Month
6.17"
(156.72mm)
5.49"
(139.45mm)
0.68"
(17.27mm)
91st Driest
Driest since:
1952
38th Wettest
Wettest since:
2016
Ties: 1908
Jun–Oct 2019
5-Month
7.08"
(179.83mm)
7.21"
(183.13mm)
-0.13"
(-3.30mm)
65th Driest
Driest since:
1917, 2002
64th Wettest
Wettest since:
1947
May–Oct 2019
6-Month
9.53"
(242.06mm)
9.35"
(237.49mm)
0.18"
(4.57mm)
72nd Driest
Driest since:
2002
57th Wettest
Wettest since:
1941
Apr–Oct 2019
7-Month
13.42"
(340.87mm)
11.71"
(297.43mm)
1.71"
(43.44mm)
100th Driest
Driest since:
2002
29th Wettest
Wettest since:
1997
Mar–Oct 2019
8-Month
15.08"
(383.03mm)
14.97"
(380.24mm)
0.11"
(2.79mm)
62nd Driest
Driest since:
1939
67th Wettest
Wettest since:
1997
Feb–Oct 2019
9-Month
20.39"
(517.91mm)
18.58"
(471.93mm)
1.81"
(45.98mm)
94th Driest
Driest since:
1929
35th Wettest
Wettest since:
2017
Jan–Oct 2019
10-Month
23.73"
(602.74mm)
23.10"
(586.74mm)
0.63"
(16.00mm)
77th Driest
Driest since:
1929
52nd Wettest
Wettest since:
1950
Dec 2018–Oct 2019
11-Month
28.17"
(715.52mm)
27.75"
(704.85mm)
0.42"
(10.67mm)
68th Driest
Driest since:
1929
60th Wettest
Wettest since:
1997
Nov 2018–Oct 2019
12-Month
31.45"
(798.83mm)
32.10"
(815.34mm)
-0.65"
(-16.51mm)
60th Driest
Driest since:
1977
68th Wettest
Wettest since:
1997
May 2018–Oct 2019
18-Month
37.98"
(964.69mm)
41.48"
(1,053.59mm)
-3.50"
(-88.90mm)
34th Driest
Driest since:
1929
94th Wettest
Wettest since:
1997
Nov 2017–Oct 2019
24-Month
60.90"
(1,546.86mm)
64.23"
(1,631.44mm)
-3.33"
(-84.58mm)
38th Driest
Driest since:
1930
89th Wettest
Wettest since:
1997
Nov 2016–Oct 2019
36-Month
97.91"
(2,486.91mm)
96.31"
(2,446.27mm)
1.60"
(40.64mm)
76th Driest
Driest since:
1931
50th Wettest
Wettest since:
1997
Nov 2015–Oct 2019
48-Month
137.60"
(3,495.04mm)
128.38"
(3,260.85mm)
9.22"
(234.19mm)
110th Driest
Driest since:
1931
15th Wettest
Wettest since:
1999
Nov 2014–Oct 2019
60-Month
165.51"
(4,203.95mm)
160.37"
(4,073.40mm)
5.14"
(130.55mm)
90th Driest
Driest since:
1932
34th Wettest
Wettest since:
1999

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