Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. 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, November 2021

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
November 2021
1-Month		4.75"
(120.65mm)		4.34"
(110.24mm)		0.41"
(10.41mm)		79th Driest
Driest since:
1936
50th Wettest
Wettest since:
1909
Oct–Nov 2021
2-Month		8.38"
(212.85mm)		6.88"
(174.75mm)		1.50"
(38.10mm)		94th Driest
Driest since:
1936
35th Wettest
Wettest since:
1909
Sep–Nov 2021
3-Month		10.25"
(260.35mm)		8.30"
(210.82mm)		1.95"
(49.53mm)		99th Driest
Driest since:
1936
30th Wettest
Wettest since:
1973
Aug–Nov 2021
4-Month		10.94"
(277.88mm)		9.10"
(231.14mm)		1.84"
(46.74mm)		99th Driest
Driest since:
1936
30th Wettest
Wettest since:
1927
Jul–Nov 2021
5-Month		11.21"
(284.73mm)		9.83"
(249.68mm)		1.38"
(35.05mm)		89th Driest
Driest since:
1929
40th Wettest
Wettest since:
1909
Jun–Nov 2021
6-Month		12.16"
(308.86mm)		11.55"
(293.37mm)		0.61"
(15.49mm)		75th Driest
Driest since:
1929
54th Wettest
Wettest since:
1983, 1984
May–Nov 2021
7-Month		13.38"
(339.85mm)		13.69"
(347.73mm)		-0.31"
(-7.88mm)		55th Driest
Driest since:
1929
74th Wettest
Wettest since:
1984
Apr–Nov 2021
8-Month		14.20"
(360.68mm)		16.05"
(407.67mm)		-1.85"
(-46.99mm)		37th Driest
Driest since:
1929
92nd Wettest
Wettest since:
1984
Mar–Nov 2021
9-Month		15.98"
(405.89mm)		19.31"
(490.47mm)		-3.33"
(-84.58mm)		17th Driest
Driest since:
1929
112th Wettest
Wettest since:
1984
Feb–Nov 2021
10-Month		20.32"
(516.13mm)		22.92"
(582.17mm)		-2.60"
(-66.04mm)		33rd Driest
Driest since:
1929
96th Wettest
Wettest since:
1983
Jan–Nov 2021
11-Month		24.87"
(631.70mm)		27.45"
(697.23mm)		-2.58"
(-65.53mm)		34th Driest
Driest since:
1929
95th Wettest
Wettest since:
1983
Dec 2020–Nov 2021
12-Month		28.72"
(729.49mm)		32.09"
(815.09mm)		-3.37"
(-85.60mm)		30th Driest
Driest since:
1929
98th Wettest
Wettest since:
1997
Jun 2020–Nov 2021
18-Month		39.45"
(1,002.03mm)		43.68"
(1,109.47mm)		-4.23"
(-107.44mm)		27th Driest
Driest since:
1929
101st Wettest
Wettest since:
1996
Dec 2019–Nov 2021
24-Month		59.57"
(1,513.08mm)		64.20"
(1,630.68mm)		-4.63"
(-117.60mm)		30th Driest
Driest since:
1929
97th Wettest
Wettest since:
1997
Dec 2018–Nov 2021
36-Month		88.99"
(2,260.35mm)		96.31"
(2,446.27mm)		-7.32"
(-185.92mm)		23rd Driest
Driest since:
1930
103rd Wettest
Wettest since:
1997
Dec 2017–Nov 2021
48-Month		116.11"
(2,949.19mm)		128.35"
(3,260.09mm)		-12.24"
(-310.90mm)		14th Driest
Driest since:
1931
111th Wettest
Wettest since:
1998
Dec 2016–Nov 2021
60-Month		154.88"
(3,933.95mm)		160.31"
(4,071.87mm)		-5.43"
(-137.92mm)		36th Driest
Driest since:
1932
88th Wettest
Wettest since:
1999

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