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 1989

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Record Driest

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2021)	Wettest/Driest Since	Record
December 1989 1-Month	1.93" (49.02mm)	4.63" (117.60mm)	-2.70" (-68.58mm)	5th Driest	Driest since: 1985	1976
December 1989 1-Month	1.93" (49.02mm)	4.63" (117.60mm)	-2.70" (-68.58mm)	123rd Wettest	Wettest since: 1988	1964
Nov–Dec 1989 2-Month	5.28" (134.11mm)	8.97" (227.84mm)	-3.69" (-93.73mm)	10th Driest	Driest since: 1976	1976
Nov–Dec 1989 2-Month	5.28" (134.11mm)	8.97" (227.84mm)	-3.69" (-93.73mm)	118th Wettest	Wettest since: 1988	1996
Oct–Dec 1989 3-Month	7.57" (192.28mm)	11.51" (292.35mm)	-3.94" (-100.07mm)	11th Driest	Driest since: 1978	1976
Oct–Dec 1989 3-Month	7.57" (192.28mm)	11.51" (292.35mm)	-3.94" (-100.07mm)	117th Wettest	Wettest since: 1988	1996
Sep–Dec 1989 4-Month	8.38" (212.85mm)	12.93" (328.42mm)	-4.55" (-115.57mm)	8th Driest	Driest since: 1976	1976
Sep–Dec 1989 4-Month	8.38" (212.85mm)	12.93" (328.42mm)	-4.55" (-115.57mm)	120th Wettest	Wettest since: 1988	1996
Aug–Dec 1989 5-Month	9.95" (252.73mm)	13.73" (348.74mm)	-3.78" (-96.01mm)	14th Driest	Driest since: 1987	1936
Aug–Dec 1989 5-Month	9.95" (252.73mm)	13.73" (348.74mm)	-3.78" (-96.01mm)	114th Wettest	Wettest since: 1988	1996
Jul–Dec 1989 6-Month	10.47" (265.94mm)	14.46" (367.28mm)	-3.99" (-101.34mm)	13th Driest	Driest since: 1976	1936
Jul–Dec 1989 6-Month	10.47" (265.94mm)	14.46" (367.28mm)	-3.99" (-101.34mm)	115th Wettest	Wettest since: 1988	1996
Jun–Dec 1989 7-Month	11.42" (290.07mm)	16.18" (410.97mm)	-4.76" (-120.90mm)	8th Driest	Driest since: 1976	1976
Jun–Dec 1989 7-Month	11.42" (290.07mm)	16.18" (410.97mm)	-4.76" (-120.90mm)	120th Wettest	Wettest since: 1988	1996
May–Dec 1989 8-Month	13.71" (348.23mm)	18.32" (465.33mm)	-4.61" (-117.10mm)	11th Driest	Driest since: 1976	1935
May–Dec 1989 8-Month	13.71" (348.23mm)	18.32" (465.33mm)	-4.61" (-117.10mm)	117th Wettest	Wettest since: 1988	1996
Apr–Dec 1989 9-Month	15.78" (400.81mm)	20.67" (525.02mm)	-4.89" (-124.21mm)	10th Driest	Driest since: 1976	1976
Apr–Dec 1989 9-Month	15.78" (400.81mm)	20.67" (525.02mm)	-4.89" (-124.21mm)	118th Wettest	Wettest since: 1988	1996
Mar–Dec 1989 10-Month	21.23" (539.24mm)	23.93" (607.82mm)	-2.70" (-68.58mm)	34th Driest	Driest since: 1987	1976
Mar–Dec 1989 10-Month	21.23" (539.24mm)	23.93" (607.82mm)	-2.70" (-68.58mm)	94th Wettest	Wettest since: 1988	1996
Feb–Dec 1989 11-Month	23.41" (594.61mm)	27.54" (699.52mm)	-4.13" (-104.91mm)	23rd Driest	Driest since: 1987	1935
Feb–Dec 1989 11-Month	23.41" (594.61mm)	27.54" (699.52mm)	-4.13" (-104.91mm)	105th Wettest	Wettest since: 1988	1996
Jan–Dec 1989 12-Month	27.54" (699.52mm)	32.07" (814.58mm)	-4.53" (-115.06mm)	22nd Driest	Driest since: 1987	1929
Jan–Dec 1989 12-Month	27.54" (699.52mm)	32.07" (814.58mm)	-4.53" (-115.06mm)	106th Wettest	Wettest since: 1988	1996
Jul 1988–Dec 1989 18-Month	40.62" (1,031.75mm)	46.58" (1,183.13mm)	-5.96" (-151.38mm)	18th Driest	Driest since: 1988	1929
Jul 1988–Dec 1989 18-Month	40.62" (1,031.75mm)	46.58" (1,183.13mm)	-5.96" (-151.38mm)	109th Wettest	Wettest since: 1986	1996
Jan 1988–Dec 1989 24-Month	57.00" (1,447.80mm)	64.19" (1,630.43mm)	-7.19" (-182.63mm)	16th Driest	Driest since: 1988	1930
Jan 1988–Dec 1989 24-Month	57.00" (1,447.80mm)	64.19" (1,630.43mm)	-7.19" (-182.63mm)	111th Wettest	Wettest since: 1987	1996
Jan 1987–Dec 1989 36-Month	83.25" (2,114.55mm)	96.33" (2,446.78mm)	-13.08" (-332.23mm)	6th Driest	Driest since: 1987	1930
Jan 1987–Dec 1989 36-Month	83.25" (2,114.55mm)	96.33" (2,446.78mm)	-13.08" (-332.23mm)	120th Wettest	Wettest since: 1988	1997
Jan 1986–Dec 1989 48-Month	115.91" (2,944.11mm)	128.33" (3,259.58mm)	-12.42" (-315.47mm)	12th Driest	Driest since: 1988	1931
Jan 1986–Dec 1989 48-Month	115.91" (2,944.11mm)	128.33" (3,259.58mm)	-12.42" (-315.47mm)	113th Wettest	Wettest since: 1987	1998
Jan 1985–Dec 1989 60-Month	139.89" (3,553.21mm)	160.34" (4,072.64mm)	-20.45" (-519.43mm)	4th Driest	Driest since: 1932	1932
Jan 1985–Dec 1989 60-Month	139.89" (3,553.21mm)	160.34" (4,072.64mm)	-20.45" (-519.43mm)	120th Wettest	Wettest since: 1988	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published November 2022, retrieved on November 28, 2022 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings