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, October 1930

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
October 1930
1-Month		2.19"
(55.63mm)		2.54"
(64.52mm)		-0.35"
(-8.89mm)		50th Driest
Driest since:
1895
79th Wettest
Wettest since:
2016
Sep–Oct 1930
2-Month		3.80"
(96.52mm)		3.96"
(100.58mm)		-0.16"
(-4.06mm)		58th Driest
Driest since:
1987
71st Wettest
Wettest since:
2016
Ties: 1919
Aug–Oct 1930
3-Month		4.52"
(114.81mm)		4.76"
(120.90mm)		-0.24"
(-6.09mm)		59th Driest
Driest since:
1987
70th Wettest
Wettest since:
2016
Jul–Oct 1930
4-Month		4.73"
(120.14mm)		5.49"
(139.45mm)		-0.76"
(-19.31mm)		45th Driest
Driest since:
1952
84th Wettest
Wettest since:
2016
Jun–Oct 1930
5-Month		5.80"
(147.32mm)		7.21"
(183.13mm)		-1.41"
(-35.81mm)		29th Driest
Driest since:
1917, 2002
100th Wettest
Wettest since:
1947
May–Oct 1930
6-Month		8.13"
(206.50mm)		9.35"
(237.49mm)		-1.22"
(-30.99mm)		34th Driest
Driest since:
2002
95th Wettest
Wettest since:
1941
Apr–Oct 1930
7-Month		10.38"
(263.65mm)		11.71"
(297.43mm)		-1.33"
(-33.78mm)		35th Driest
Driest since:
2002
94th Wettest
Wettest since:
1997
Mar–Oct 1930
8-Month		12.44"
(315.98mm)		14.97"
(380.24mm)		-2.53"
(-64.26mm)		24th Driest
Driest since:
1939
105th Wettest
Wettest since:
1997
Feb–Oct 1930
9-Month		16.72"
(424.69mm)		18.58"
(471.93mm)		-1.86"
(-47.24mm)		36th Driest
Driest since:
1929
93rd Wettest
Wettest since:
2017
Jan–Oct 1930
10-Month		19.49"
(495.05mm)		23.10"
(586.74mm)		-3.61"
(-91.69mm)		21st Driest
Driest since:
1929
108th Wettest
Wettest since:
1950
Ties: 1895, 1994
Dec 1929–Oct 1930
11-Month		25.92"
(658.37mm)		27.75"
(704.85mm)		-1.83"
(-46.48mm)		39th Driest
Driest since:
1929
89th Wettest
Wettest since:
1997
Ties: 1955
Nov 1929–Oct 1930
12-Month		26.38"
(670.05mm)		32.10"
(815.34mm)		-5.72"
(-145.29mm)		12th Driest
Driest since:
1977
116th Wettest
Wettest since:
1997
May 1929–Oct 1930
18-Month		31.66"
(804.16mm)		41.48"
(1,053.59mm)		-9.82"
(-249.43mm)		4th Driest
Driest since:
1929
124th Wettest
Wettest since:
1997
Nov 1928–Oct 1930
24-Month		48.45"
(1,230.63mm)		64.23"
(1,631.44mm)		-15.78"
(-400.81mm)		1st Driest
Driest to Date
1930
126th Wettest
Wettest since:
1997
Nov 1927–Oct 1930
36-Month		77.75"
(1,974.85mm)		96.31"
(2,446.27mm)		-18.56"
(-471.42mm)		2nd Driest
Driest to Date
1931
124th Wettest
Wettest since:
1997
Nov 1926–Oct 1930
48-Month		114.79"
(2,915.67mm)		128.38"
(3,260.85mm)		-13.59"
(-345.18mm)		8th Driest
Driest since:
1931
117th Wettest
Wettest since:
1999
Nov 1925–Oct 1930
60-Month		141.33"
(3,589.78mm)		160.37"
(4,073.40mm)		-19.04"
(-483.62mm)		5th Driest
Driest to Date
1932
119th Wettest
Wettest since:
1999

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