Regional Rankings

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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, December 1948

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
December 1948 1-Month	6.05" (153.67mm)	4.63" (117.60mm)	1.42" (36.07mm)	106th Driest	Driest since: 1947	1976
December 1948 1-Month	6.05" (153.67mm)	4.63" (117.60mm)	1.42" (36.07mm)	23rd Wettest	Wettest since: 1942	1964
Nov–Dec 1948 2-Month	11.21" (284.73mm)	8.97" (227.84mm)	2.24" (56.89mm)	106th Driest	Driest since: 1947	1976
	11.21" (284.73mm)	8.97" (227.84mm)	2.24" (56.89mm)	23rd Wettest	Wettest since: 1945	1996
	Ties: 1970
Oct–Dec 1948 3-Month	12.91" (327.91mm)	11.51" (292.35mm)	1.40" (35.56mm)	84th Driest	Driest since: 1947	1976
Oct–Dec 1948 3-Month	12.91" (327.91mm)	11.51" (292.35mm)	1.40" (35.56mm)	45th Wettest	Wettest since: 1946	1996
Sep–Dec 1948 4-Month	14.82" (376.43mm)	12.93" (328.42mm)	1.89" (48.01mm)	89th Driest	Driest since: 1947	1976
Sep–Dec 1948 4-Month	14.82" (376.43mm)	12.93" (328.42mm)	1.89" (48.01mm)	40th Wettest	Wettest since: 1945	1996
Aug–Dec 1948 5-Month	15.84" (402.34mm)	13.73" (348.74mm)	2.11" (53.60mm)	93rd Driest	Driest since: 1947	1936
Aug–Dec 1948 5-Month	15.84" (402.34mm)	13.73" (348.74mm)	2.11" (53.60mm)	36th Wettest	Wettest since: 1945	1996
Jul–Dec 1948 6-Month	17.05" (433.07mm)	14.46" (367.28mm)	2.59" (65.79mm)	102nd Driest	Driest since: 1947	1936
Jul–Dec 1948 6-Month	17.05" (433.07mm)	14.46" (367.28mm)	2.59" (65.79mm)	27th Wettest	Wettest since: 1942	1996
Jun–Dec 1948 7-Month	19.83" (503.68mm)	16.18" (410.97mm)	3.65" (92.71mm)	110th Driest	Driest since: 1947	1976
	19.83" (503.68mm)	16.18" (410.97mm)	3.65" (92.71mm)	19th Wettest	Wettest since: 1942	1996
	Ties: 1982
May–Dec 1948 8-Month	23.87" (606.30mm)	18.32" (465.33mm)	5.55" (140.97mm)	118th Driest	Driest since: 1947	1935
May–Dec 1948 8-Month	23.87" (606.30mm)	18.32" (465.33mm)	5.55" (140.97mm)	11th Wettest	Wettest since: 1941	1996
Apr–Dec 1948 9-Month	27.26" (692.40mm)	20.67" (525.02mm)	6.59" (167.38mm)	125th Driest	Driest since: 1947	1976
Apr–Dec 1948 9-Month	27.26" (692.40mm)	20.67" (525.02mm)	6.59" (167.38mm)	4th Wettest	Wettest to Date	1996
Mar–Dec 1948 10-Month	30.25" (768.35mm)	23.93" (607.82mm)	6.32" (160.53mm)	122nd Driest	Driest since: 1947	1976
Mar–Dec 1948 10-Month	30.25" (768.35mm)	23.93" (607.82mm)	6.32" (160.53mm)	7th Wettest	Wettest to Date	1996
Feb–Dec 1948 11-Month	34.80" (883.92mm)	27.54" (699.52mm)	7.26" (184.40mm)	125th Driest	Driest since: 1947	1935
Feb–Dec 1948 11-Month	34.80" (883.92mm)	27.54" (699.52mm)	7.26" (184.40mm)	4th Wettest	Wettest to Date	1996
Jan–Dec 1948 12-Month	39.06" (992.12mm)	32.07" (814.58mm)	6.99" (177.54mm)	122nd Driest	Driest since: 1947	1929
Jan–Dec 1948 12-Month	39.06" (992.12mm)	32.07" (814.58mm)	6.99" (177.54mm)	7th Wettest	Wettest since: 1896	1996
Jul 1947–Dec 1948 18-Month	54.65" (1,388.11mm)	46.58" (1,183.13mm)	8.07" (204.98mm)	120th Driest	Driest since: 1947	1929
Jul 1947–Dec 1948 18-Month	54.65" (1,388.11mm)	46.58" (1,183.13mm)	8.07" (204.98mm)	8th Wettest	Wettest to Date	1996
Jan 1947–Dec 1948 24-Month	70.01" (1,778.25mm)	64.19" (1,630.43mm)	5.82" (147.82mm)	110th Driest	Driest since: 1947	1930
Jan 1947–Dec 1948 24-Month	70.01" (1,778.25mm)	64.19" (1,630.43mm)	5.82" (147.82mm)	18th Wettest	Wettest since: 1907	1996
Jan 1946–Dec 1948 36-Month	103.24" (2,622.30mm)	96.33" (2,446.78mm)	6.91" (175.52mm)	109th Driest	Driest since: 1947	1930
Jan 1946–Dec 1948 36-Month	103.24" (2,622.30mm)	96.33" (2,446.78mm)	6.91" (175.52mm)	18th Wettest	Wettest since: 1904	1997
Jan 1945–Dec 1948 48-Month	139.67" (3,547.62mm)	128.33" (3,259.58mm)	11.34" (288.04mm)	115th Driest	Driest since: 1947	1931
Jan 1945–Dec 1948 48-Month	139.67" (3,547.62mm)	128.33" (3,259.58mm)	11.34" (288.04mm)	11th Wettest	Wettest to Date	1998
Jan 1944–Dec 1948 60-Month	164.45" (4,177.03mm)	160.34" (4,072.64mm)	4.11" (104.39mm)	87th Driest	Driest since: 1947	1932
Jan 1944–Dec 1948 60-Month	164.45" (4,177.03mm)	160.34" (4,072.64mm)	4.11" (104.39mm)	38th Wettest	Wettest since: 1910	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on January 30, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings