Regional Rankings

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Month:

Region:

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, December 1917

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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
December 1917 1-Month	8.34" (211.84mm)	4.63" (117.60mm)	3.71" (94.24mm)	123rd Driest	Driest since: 1916	1976
December 1917 1-Month	8.34" (211.84mm)	4.63" (117.60mm)	3.71" (94.24mm)	6th Wettest	Wettest to Date	1964
Nov–Dec 1917 2-Month	11.77" (298.96mm)	8.97" (227.84mm)	2.80" (71.12mm)	111th Driest	Driest since: 1916	1976
Nov–Dec 1917 2-Month	11.77" (298.96mm)	8.97" (227.84mm)	2.80" (71.12mm)	18th Wettest	Wettest since: 1909	1996
Oct–Dec 1917 3-Month	12.11" (307.59mm)	11.51" (292.35mm)	0.60" (15.24mm)	73rd Driest	Driest since: 1916	1976
Oct–Dec 1917 3-Month	12.11" (307.59mm)	11.51" (292.35mm)	0.60" (15.24mm)	56th Wettest	Wettest since: 1915	1996
Sep–Dec 1917 4-Month	13.81" (350.77mm)	12.93" (328.42mm)	0.88" (22.35mm)	75th Driest	Driest since: 1916	1976
	13.81" (350.77mm)	12.93" (328.42mm)	0.88" (22.35mm)	54th Wettest	Wettest since: 1915	1996
	Ties: 1931
Aug–Dec 1917 5-Month	13.95" (354.33mm)	13.73" (348.74mm)	0.22" (5.59mm)	68th Driest	Driest since: 1916	1936
Aug–Dec 1917 5-Month	13.95" (354.33mm)	13.73" (348.74mm)	0.22" (5.59mm)	61st Wettest	Wettest since: 1915	1996
Jul–Dec 1917 6-Month	14.15" (359.41mm)	14.46" (367.28mm)	-0.31" (-7.87mm)	62nd Driest	Driest since: 1916	1936
	14.15" (359.41mm)	14.46" (367.28mm)	-0.31" (-7.87mm)	67th Wettest	Wettest since: 1915	1996
	Ties: 1931
Jun–Dec 1917 7-Month	15.27" (387.86mm)	16.18" (410.97mm)	-0.91" (-23.11mm)	57th Driest	Driest since: 1916	1976
Jun–Dec 1917 7-Month	15.27" (387.86mm)	16.18" (410.97mm)	-0.91" (-23.11mm)	72nd Wettest	Wettest since: 1915	1996
May–Dec 1917 8-Month	17.64" (448.06mm)	18.32" (465.33mm)	-0.68" (-17.27mm)	61st Driest	Driest since: 1916	1935
May–Dec 1917 8-Month	17.64" (448.06mm)	18.32" (465.33mm)	-0.68" (-17.27mm)	68th Wettest	Wettest since: 1915	1996
Apr–Dec 1917 9-Month	21.38" (543.05mm)	20.67" (525.02mm)	0.71" (18.03mm)	75th Driest	Driest since: 1916	1976
Apr–Dec 1917 9-Month	21.38" (543.05mm)	20.67" (525.02mm)	0.71" (18.03mm)	54th Wettest	Wettest since: 1915	1996
Mar–Dec 1917 10-Month	25.06" (636.52mm)	23.93" (607.82mm)	1.13" (28.70mm)	78th Driest	Driest since: 1916	1976
Mar–Dec 1917 10-Month	25.06" (636.52mm)	23.93" (607.82mm)	1.13" (28.70mm)	51st Wettest	Wettest since: 1915	1996
Feb–Dec 1917 11-Month	28.51" (724.15mm)	27.54" (699.52mm)	0.97" (24.63mm)	73rd Driest	Driest since: 1914	1935
Feb–Dec 1917 11-Month	28.51" (724.15mm)	27.54" (699.52mm)	0.97" (24.63mm)	56th Wettest	Wettest since: 1916	1996
Jan–Dec 1917 12-Month	31.64" (803.66mm)	32.07" (814.58mm)	-0.43" (-10.92mm)	64th Driest	Driest since: 1914	1929
Jan–Dec 1917 12-Month	31.64" (803.66mm)	32.07" (814.58mm)	-0.43" (-10.92mm)	65th Wettest	Wettest since: 1916	1996
Jul 1916–Dec 1917 18-Month	43.86" (1,114.04mm)	46.58" (1,183.13mm)	-2.72" (-69.09mm)	43rd Driest	Driest since: 1915	1929
Jul 1916–Dec 1917 18-Month	43.86" (1,114.04mm)	46.58" (1,183.13mm)	-2.72" (-69.09mm)	85th Wettest	Wettest since: 1916	1996
Jan 1916–Dec 1917 24-Month	66.26" (1,683.00mm)	64.19" (1,630.43mm)	2.07" (52.57mm)	80th Driest	Driest since: 1915	1930
Jan 1916–Dec 1917 24-Month	66.26" (1,683.00mm)	64.19" (1,630.43mm)	2.07" (52.57mm)	48th Wettest	Wettest since: 1916	1996
Jan 1915–Dec 1917 36-Month	98.06" (2,490.72mm)	96.33" (2,446.78mm)	1.73" (43.94mm)	77th Driest	Driest since: 1916	1930
Jan 1915–Dec 1917 36-Month	98.06" (2,490.72mm)	96.33" (2,446.78mm)	1.73" (43.94mm)	50th Wettest	Wettest since: 1909	1997
Jan 1914–Dec 1917 48-Month	127.84" (3,247.14mm)	128.33" (3,259.58mm)	-0.49" (-12.44mm)	66th Driest	Driest since: 1916	1931
Jan 1914–Dec 1917 48-Month	127.84" (3,247.14mm)	128.33" (3,259.58mm)	-0.49" (-12.44mm)	60th Wettest	Wettest since: 1915	1998
Jan 1913–Dec 1917 60-Month	158.85" (4,034.79mm)	160.34" (4,072.64mm)	-1.49" (-37.85mm)	56th Driest	Driest since: 1915	1932
Jan 1913–Dec 1917 60-Month	158.85" (4,034.79mm)	160.34" (4,072.64mm)	-1.49" (-37.85mm)	69th Wettest	Wettest since: 1916	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published May 2023, retrieved on May 28, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings