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 1895

View Period (Months):
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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
October 1895
1-Month
0.11"
(2.79mm)
2.54"
(64.52mm)
-2.43"
(-61.73mm)
1st Driest
Driest since:
1895
128th Wettest
Wettest to Date
2016
Sep–Oct 1895
2-Month
2.45"
(62.23mm)
3.96"
(100.58mm)
-1.51"
(-38.35mm)
20th Driest
Driest since:
1987
109th Wettest
Wettest to Date
2016
Aug–Oct 1895
3-Month
2.74"
(69.60mm)
4.76"
(120.90mm)
-2.02"
(-51.30mm)
12th Driest
Driest since:
1987
117th Wettest
Wettest to Date
2016
Jul–Oct 1895
4-Month
3.35"
(85.09mm)
5.49"
(139.45mm)
-2.14"
(-54.36mm)
11th Driest
Driest since:
1952
118th Wettest
Wettest to Date
2016
Jun–Oct 1895
5-Month
3.88"
(98.55mm)
7.21"
(183.13mm)
-3.33"
(-84.58mm)
4th Driest
Driest since:
1917, 2002
125th Wettest
Wettest to Date
1947
May–Oct 1895
6-Month
7.06"
(179.32mm)
9.35"
(237.49mm)
-2.29"
(-58.17mm)
17th Driest
Driest since:
2002
112th Wettest
Wettest to Date
1941
Apr–Oct 1895
7-Month
9.02"
(229.11mm)
11.71"
(297.43mm)
-2.69"
(-68.32mm)
14th Driest
Driest since:
2002
115th Wettest
Wettest to Date
1997
Mar–Oct 1895
8-Month
11.67"
(296.42mm)
14.97"
(380.24mm)
-3.30"
(-83.82mm)
12th Driest
Driest since:
1939
117th Wettest
Wettest to Date
1997
Feb–Oct 1895
9-Month
13.23"
(336.04mm)
18.58"
(471.93mm)
-5.35"
(-135.89mm)
3rd Driest
Driest since:
1929
126th Wettest
Wettest to Date
2017
Jan–Oct 1895
10-Month
19.49"
(495.05mm)
23.10"
(586.74mm)
-3.61"
(-91.69mm)
21st Driest
Driest since:
1929
108th Wettest
Wettest to Date
1950
Ties: 1930, 1994

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