Regional Rankings

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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, December 1970

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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 1970 1-Month	5.76" (146.30mm)	4.63" (117.60mm)	1.13" (28.70mm)	94th Driest	Driest since: 1969	1976
December 1970 1-Month	5.76" (146.30mm)	4.63" (117.60mm)	1.13" (28.70mm)	35th Wettest	Wettest since: 1968	1964
Nov–Dec 1970 2-Month	11.21" (284.73mm)	8.97" (227.84mm)	2.24" (56.89mm)	106th Driest	Driest since: 1969	1976
	11.21" (284.73mm)	8.97" (227.84mm)	2.24" (56.89mm)	23rd Wettest	Wettest since: 1968	1996
	Ties: 1948
Oct–Dec 1970 3-Month	13.87" (352.30mm)	11.51" (292.35mm)	2.36" (59.95mm)	99th Driest	Driest since: 1969	1976
Oct–Dec 1970 3-Month	13.87" (352.30mm)	11.51" (292.35mm)	2.36" (59.95mm)	30th Wettest	Wettest since: 1968	1996
Sep–Dec 1970 4-Month	15.75" (400.05mm)	12.93" (328.42mm)	2.82" (71.63mm)	105th Driest	Driest since: 1969	1976
	15.75" (400.05mm)	12.93" (328.42mm)	2.82" (71.63mm)	24th Wettest	Wettest since: 1968	1996
	Ties: 1951
Aug–Dec 1970 5-Month	15.96" (405.38mm)	13.73" (348.74mm)	2.23" (56.64mm)	96th Driest	Driest since: 1969	1936
Aug–Dec 1970 5-Month	15.96" (405.38mm)	13.73" (348.74mm)	2.23" (56.64mm)	33rd Wettest	Wettest since: 1968	1996
Jul–Dec 1970 6-Month	16.66" (423.16mm)	14.46" (367.28mm)	2.20" (55.88mm)	96th Driest	Driest since: 1969	1936
Jul–Dec 1970 6-Month	16.66" (423.16mm)	14.46" (367.28mm)	2.20" (55.88mm)	33rd Wettest	Wettest since: 1968	1996
Jun–Dec 1970 7-Month	18.51" (470.15mm)	16.18" (410.97mm)	2.33" (59.18mm)	98th Driest	Driest since: 1969	1976
Jun–Dec 1970 7-Month	18.51" (470.15mm)	16.18" (410.97mm)	2.33" (59.18mm)	31st Wettest	Wettest since: 1968	1996
May–Dec 1970 8-Month	20.06" (509.52mm)	18.32" (465.33mm)	1.74" (44.19mm)	90th Driest	Driest since: 1969	1935
	20.06" (509.52mm)	18.32" (465.33mm)	1.74" (44.19mm)	39th Wettest	Wettest since: 1968	1996
	Ties: 2006
Apr–Dec 1970 9-Month	22.76" (578.10mm)	20.67" (525.02mm)	2.09" (53.08mm)	93rd Driest	Driest since: 1969	1976
Apr–Dec 1970 9-Month	22.76" (578.10mm)	20.67" (525.02mm)	2.09" (53.08mm)	36th Wettest	Wettest since: 1968	1996
Mar–Dec 1970 10-Month	25.37" (644.40mm)	23.93" (607.82mm)	1.44" (36.58mm)	85th Driest	Driest since: 1969	1976
Mar–Dec 1970 10-Month	25.37" (644.40mm)	23.93" (607.82mm)	1.44" (36.58mm)	44th Wettest	Wettest since: 1968	1996
Feb–Dec 1970 11-Month	27.73" (704.34mm)	27.54" (699.52mm)	0.19" (4.82mm)	66th Driest	Driest since: 1969	1935
Feb–Dec 1970 11-Month	27.73" (704.34mm)	27.54" (699.52mm)	0.19" (4.82mm)	63rd Wettest	Wettest since: 1968	1996
Jan–Dec 1970 12-Month	36.19" (919.23mm)	32.07" (814.58mm)	4.12" (104.65mm)	104th Driest	Driest since: 1969	1929
Jan–Dec 1970 12-Month	36.19" (919.23mm)	32.07" (814.58mm)	4.12" (104.65mm)	25th Wettest	Wettest since: 1964	1996
Jul 1969–Dec 1970 18-Month	48.14" (1,222.76mm)	46.58" (1,183.13mm)	1.56" (39.63mm)	79th Driest	Driest since: 1967	1929
Jul 1969–Dec 1970 18-Month	48.14" (1,222.76mm)	46.58" (1,183.13mm)	1.56" (39.63mm)	49th Wettest	Wettest since: 1969	1996
Jan 1969–Dec 1970 24-Month	66.02" (1,676.91mm)	64.19" (1,630.43mm)	1.83" (46.48mm)	78th Driest	Driest since: 1969	1930
	66.02" (1,676.91mm)	64.19" (1,630.43mm)	1.83" (46.48mm)	50th Wettest	Wettest since: 1968	1996
	Ties: 1949
Jan 1968–Dec 1970 36-Month	102.20" (2,595.88mm)	96.33" (2,446.78mm)	5.87" (149.10mm)	105th Driest	Driest since: 1969	1930
Jan 1968–Dec 1970 36-Month	102.20" (2,595.88mm)	96.33" (2,446.78mm)	5.87" (149.10mm)	22nd Wettest	Wettest since: 1955	1997
Jan 1967–Dec 1970 48-Month	133.31" (3,386.07mm)	128.33" (3,259.58mm)	4.98" (126.49mm)	96th Driest	Driest since: 1969	1931
Jan 1967–Dec 1970 48-Month	133.31" (3,386.07mm)	128.33" (3,259.58mm)	4.98" (126.49mm)	30th Wettest	Wettest since: 1964	1998
Jan 1966–Dec 1970 60-Month	162.98" (4,139.69mm)	160.34" (4,072.64mm)	2.64" (67.05mm)	78th Driest	Driest since: 1969	1932
Jan 1966–Dec 1970 60-Month	162.98" (4,139.69mm)	160.34" (4,072.64mm)	2.64" (67.05mm)	47th Wettest	Wettest since: 1968	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published March 2023, retrieved on March 26, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings