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 1948

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
October 1948
1-Month 		1.70"
(43.18mm)		 2.54"
(64.52mm)		 -0.84"
(-21.34mm)		 31st Driest
Driest since:
 1895
98th Wettest
Wettest since:
 2016
Sep–Oct 1948
2-Month 		3.61"
(91.69mm)		 3.96"
(100.58mm)		 -0.35"
(-8.89mm)		 54th Driest
Driest since:
 1987
75th Wettest
Wettest since:
 2016
Aug–Oct 1948
3-Month 		4.63"
(117.60mm)		 4.76"
(120.90mm)		 -0.13"
(-3.30mm)		 65th Driest
Driest since:
 1987
64th Wettest
Wettest since:
 2016
Jul–Oct 1948
4-Month 		5.84"
(148.34mm)		 5.49"
(139.45mm)		 0.35"
(8.89mm)		 80th Driest
Driest since:
 1952
49th Wettest
Wettest since:
 2016
Jun–Oct 1948
5-Month 		8.62"
(218.95mm)		 7.21"
(183.13mm)		 1.41"
(35.82mm)		 103rd Driest
Driest since:
 1917, 2002
26th Wettest
Wettest since:
 1947
May–Oct 1948
6-Month 		12.66"
(321.56mm)		 9.35"
(237.49mm)		 3.31"
(84.07mm)		 124th Driest
Driest since:
 2002
5th Wettest
Wettest since:
 1941
Apr–Oct 1948
7-Month 		16.05"
(407.67mm)		 11.71"
(297.43mm)		 4.34"
(110.24mm)		 125th Driest
Driest since:
 2002
4th Wettest
Wettest since:
 1997
Mar–Oct 1948
8-Month 		19.04"
(483.62mm)		 14.97"
(380.24mm)		 4.07"
(103.38mm)		 122nd Driest
Driest since:
 1939
7th Wettest
Wettest to Date
 1997
Ties: 1950, 1995
Feb–Oct 1948
9-Month 		23.59"
(599.19mm)		 18.58"
(471.93mm)		 5.01"
(127.26mm)		 123rd Driest
Driest since:
 1929
6th Wettest
Wettest since:
 2017
Jan–Oct 1948
10-Month 		27.85"
(707.39mm)		 23.10"
(586.74mm)		 4.75"
(120.65mm)		 119th Driest
Driest since:
 1929
10th Wettest
Wettest since:
 1950
Dec 1947–Oct 1948
11-Month 		31.20"
(792.48mm)		 27.75"
(704.85mm)		 3.45"
(87.63mm)		 109th Driest
Driest since:
 1929
19th Wettest
Wettest since:
 1997
Nov 1947–Oct 1948
12-Month 		34.75"
(882.65mm)		 32.10"
(815.34mm)		 2.65"
(67.31mm)		 96th Driest
Driest since:
 1977
32nd Wettest
Wettest since:
 1997
May 1947–Oct 1948
18-Month 		47.95"
(1,217.93mm)		 41.48"
(1,053.59mm)		 6.47"
(164.34mm)		 116th Driest
Driest since:
 1929
12th Wettest
Wettest since:
 1997
Nov 1946–Oct 1948
24-Month 		68.49"
(1,739.65mm)		 64.23"
(1,631.44mm)		 4.26"
(108.21mm)		 102nd Driest
Driest since:
 1930
25th Wettest
Wettest since:
 1997
Nov 1945–Oct 1948
36-Month 		103.76"
(2,635.50mm)		 96.31"
(2,446.27mm)		 7.45"
(189.23mm)		 110th Driest
Driest since:
 1931
16th Wettest
Wettest to Date
 1997
Nov 1944–Oct 1948
48-Month 		134.76"
(3,422.90mm)		 128.38"
(3,260.85mm)		 6.38"
(162.05mm)		 99th Driest
Driest since:
 1931
26th Wettest
Wettest since:
 1999
Nov 1943–Oct 1948
60-Month 		157.30"
(3,995.42mm)		 160.37"
(4,073.40mm)		 -3.07"
(-77.98mm)		 51st Driest
Driest since:
 1932
73rd Wettest
Wettest since:
 1999

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