Regional Rankings

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Month:

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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 1938

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Record Driest
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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
October 1938 1-Month	3.20" (81.28mm)	2.54" (64.52mm)	0.66" (16.76mm)	92nd Driest	Driest since: 1937	1895
October 1938 1-Month	3.20" (81.28mm)	2.54" (64.52mm)	0.66" (16.76mm)	37th Wettest	Wettest since: 1934	2016
Sep–Oct 1938 2-Month	4.03" (102.36mm)	3.96" (100.58mm)	0.07" (1.78mm)	67th Driest	Driest since: 1937	1987
	4.03" (102.36mm)	3.96" (100.58mm)	0.07" (1.78mm)	62nd Wettest	Wettest since: 1934	2016
	Ties: 1926
Aug–Oct 1938 3-Month	4.38" (111.25mm)	4.76" (120.90mm)	-0.38" (-9.65mm)	53rd Driest	Driest since: 1937	1987
Aug–Oct 1938 3-Month	4.38" (111.25mm)	4.76" (120.90mm)	-0.38" (-9.65mm)	76th Wettest	Wettest since: 1934	2016
Jul–Oct 1938 4-Month	5.25" (133.35mm)	5.49" (139.45mm)	-0.24" (-6.10mm)	65th Driest	Driest since: 1937	1952
Jul–Oct 1938 4-Month	5.25" (133.35mm)	5.49" (139.45mm)	-0.24" (-6.10mm)	64th Wettest	Wettest since: 1934	2016
Jun–Oct 1938 5-Month	6.49" (164.85mm)	7.21" (183.13mm)	-0.72" (-18.28mm)	48th Driest	Driest since: 1936	1917, 2002
	6.49" (164.85mm)	7.21" (183.13mm)	-0.72" (-18.28mm)	81st Wettest	Wettest since: 1937	1947
	Ties: 1994
May–Oct 1938 6-Month	7.89" (200.41mm)	9.35" (237.49mm)	-1.46" (-37.08mm)	26th Driest	Driest since: 1936	2002
May–Oct 1938 6-Month	7.89" (200.41mm)	9.35" (237.49mm)	-1.46" (-37.08mm)	103rd Wettest	Wettest since: 1937	1941
Apr–Oct 1938 7-Month	10.04" (255.02mm)	11.71" (297.43mm)	-1.67" (-42.41mm)	28th Driest	Driest since: 1936	2002
Apr–Oct 1938 7-Month	10.04" (255.02mm)	11.71" (297.43mm)	-1.67" (-42.41mm)	101st Wettest	Wettest since: 1937	1997
Mar–Oct 1938 8-Month	15.66" (397.76mm)	14.97" (380.24mm)	0.69" (17.52mm)	72nd Driest	Driest since: 1936	1939
	15.66" (397.76mm)	14.97" (380.24mm)	0.69" (17.52mm)	57th Wettest	Wettest since: 1937	1997
	Ties: 1977
Feb–Oct 1938 9-Month	20.10" (510.54mm)	18.58" (471.93mm)	1.52" (38.61mm)	90th Driest	Driest since: 1936	1929
Feb–Oct 1938 9-Month	20.10" (510.54mm)	18.58" (471.93mm)	1.52" (38.61mm)	39th Wettest	Wettest since: 1937	2017
Jan–Oct 1938 10-Month	23.56" (598.42mm)	23.10" (586.74mm)	0.46" (11.68mm)	73rd Driest	Driest since: 1936	1929
Jan–Oct 1938 10-Month	23.56" (598.42mm)	23.10" (586.74mm)	0.46" (11.68mm)	56th Wettest	Wettest since: 1937	1950
Dec 1937–Oct 1938 11-Month	29.80" (756.92mm)	27.75" (704.85mm)	2.05" (52.07mm)	92nd Driest	Driest since: 1937	1929
	29.80" (756.92mm)	27.75" (704.85mm)	2.05" (52.07mm)	36th Wettest	Wettest since: 1927	1997
	Ties: 2012
Nov 1937–Oct 1938 12-Month	36.48" (926.59mm)	32.10" (815.34mm)	4.38" (111.25mm)	105th Driest	Driest since: 1937	1977
Nov 1937–Oct 1938 12-Month	36.48" (926.59mm)	32.10" (815.34mm)	4.38" (111.25mm)	23rd Wettest	Wettest since: 1927	1997
May 1937–Oct 1938 18-Month	45.81" (1,163.57mm)	41.48" (1,053.59mm)	4.33" (109.98mm)	101st Driest	Driest since: 1937	1929
May 1937–Oct 1938 18-Month	45.81" (1,163.57mm)	41.48" (1,053.59mm)	4.33" (109.98mm)	27th Wettest	Wettest since: 1927	1997
Nov 1936–Oct 1938 24-Month	65.68" (1,668.27mm)	64.23" (1,631.44mm)	1.45" (36.83mm)	82nd Driest	Driest since: 1937	1930
Nov 1936–Oct 1938 24-Month	65.68" (1,668.27mm)	64.23" (1,631.44mm)	1.45" (36.83mm)	45th Wettest	Wettest since: 1933	1997
Nov 1935–Oct 1938 36-Month	93.97" (2,386.84mm)	96.31" (2,446.27mm)	-2.34" (-59.43mm)	47th Driest	Driest since: 1937	1931
Nov 1935–Oct 1938 36-Month	93.97" (2,386.84mm)	96.31" (2,446.27mm)	-2.34" (-59.43mm)	79th Wettest	Wettest since: 1934	1997
Nov 1934–Oct 1938 48-Month	122.71" (3,116.83mm)	128.38" (3,260.85mm)	-5.67" (-144.02mm)	35th Driest	Driest since: 1937	1931
Nov 1934–Oct 1938 48-Month	122.71" (3,116.83mm)	128.38" (3,260.85mm)	-5.67" (-144.02mm)	90th Wettest	Wettest since: 1935	1999
Nov 1933–Oct 1938 60-Month	153.00" (3,886.20mm)	160.37" (4,073.40mm)	-7.37" (-187.20mm)	32nd Driest	Driest since: 1937	1932
Nov 1933–Oct 1938 60-Month	153.00" (3,886.20mm)	160.37" (4,073.40mm)	-7.37" (-187.20mm)	92nd Wettest	Wettest since: 1936	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published May 2023, retrieved on June 5, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings