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, January 1999

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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
January 1999 1-Month	5.25" (133.35mm)	4.53" (115.06mm)	0.72" (18.29mm)	92nd Driest	Driest since: 1994	1985
January 1999 1-Month	5.25" (133.35mm)	4.53" (115.06mm)	0.72" (18.29mm)	37th Wettest	Wettest since: 1998	1953
Dec 1998–Jan 1999 2-Month	11.44" (290.58mm)	9.17" (232.92mm)	2.27" (57.66mm)	105th Driest	Driest since: 1998	1977
Dec 1998–Jan 1999 2-Month	11.44" (290.58mm)	9.17" (232.92mm)	2.27" (57.66mm)	23rd Wettest	Wettest since: 1997	1965
Nov 1998–Jan 1999 3-Month	18.76" (476.50mm)	13.53" (343.66mm)	5.23" (132.84mm)	119th Driest	Driest since: 1998	1977
Nov 1998–Jan 1999 3-Month	18.76" (476.50mm)	13.53" (343.66mm)	5.23" (132.84mm)	9th Wettest	Wettest since: 1997	1974
Oct 1998–Jan 1999 4-Month	20.53" (521.46mm)	16.08" (408.43mm)	4.45" (113.03mm)	116th Driest	Driest since: 1998	1977
Oct 1998–Jan 1999 4-Month	20.53" (521.46mm)	16.08" (408.43mm)	4.45" (113.03mm)	12th Wettest	Wettest since: 1997	1997
Sep 1998–Jan 1999 5-Month	21.78" (553.21mm)	17.50" (444.50mm)	4.28" (108.71mm)	116th Driest	Driest since: 1998	1977
Sep 1998–Jan 1999 5-Month	21.78" (553.21mm)	17.50" (444.50mm)	4.28" (108.71mm)	12th Wettest	Wettest since: 1997	1974
Aug 1998–Jan 1999 6-Month	22.00" (558.80mm)	18.31" (465.07mm)	3.69" (93.73mm)	114th Driest	Driest since: 1998	1977
Aug 1998–Jan 1999 6-Month	22.00" (558.80mm)	18.31" (465.07mm)	3.69" (93.73mm)	14th Wettest	Wettest since: 1997	1974
Jul 1998–Jan 1999 7-Month	22.95" (582.93mm)	19.04" (483.62mm)	3.91" (99.31mm)	112th Driest	Driest since: 1998	1977
Jul 1998–Jan 1999 7-Month	22.95" (582.93mm)	19.04" (483.62mm)	3.91" (99.31mm)	16th Wettest	Wettest since: 1997	1956
Jun 1998–Jan 1999 8-Month	24.91" (632.71mm)	20.76" (527.30mm)	4.15" (105.41mm)	114th Driest	Driest since: 1998	1977
Jun 1998–Jan 1999 8-Month	24.91" (632.71mm)	20.76" (527.30mm)	4.15" (105.41mm)	14th Wettest	Wettest since: 1997	1956
May 1998–Jan 1999 9-Month	29.61" (752.09mm)	22.91" (581.91mm)	6.70" (170.18mm)	120th Driest	Driest since: 1998	1977
May 1998–Jan 1999 9-Month	29.61" (752.09mm)	22.91" (581.91mm)	6.70" (170.18mm)	8th Wettest	Wettest since: 1997	1997
Apr 1998–Jan 1999 10-Month	31.51" (800.35mm)	25.27" (641.86mm)	6.24" (158.49mm)	119th Driest	Driest since: 1998	1977
Apr 1998–Jan 1999 10-Month	31.51" (800.35mm)	25.27" (641.86mm)	6.24" (158.49mm)	9th Wettest	Wettest since: 1997	1997
Mar 1998–Jan 1999 11-Month	34.85" (885.19mm)	28.53" (724.66mm)	6.32" (160.53mm)	119th Driest	Driest since: 1998	1977
Mar 1998–Jan 1999 11-Month	34.85" (885.19mm)	28.53" (724.66mm)	6.32" (160.53mm)	9th Wettest	Wettest since: 1997	1997
Feb 1998–Jan 1999 12-Month	38.65" (981.71mm)	32.13" (816.10mm)	6.52" (165.61mm)	119th Driest	Driest since: 1998	1977
Feb 1998–Jan 1999 12-Month	38.65" (981.71mm)	32.13" (816.10mm)	6.52" (165.61mm)	9th Wettest	Wettest since: 1997	1997
Aug 1997–Jan 1999 18-Month	58.16" (1,477.26mm)	50.47" (1,281.94mm)	7.69" (195.32mm)	117th Driest	Driest since: 1995	1930
Aug 1997–Jan 1999 18-Month	58.16" (1,477.26mm)	50.47" (1,281.94mm)	7.69" (195.32mm)	10th Wettest	Wettest since: 1998	1997
Feb 1997–Jan 1999 24-Month	74.27" (1,886.46mm)	64.28" (1,632.71mm)	9.99" (253.75mm)	120th Driest	Driest since: 1996	1931
Feb 1997–Jan 1999 24-Month	74.27" (1,886.46mm)	64.28" (1,632.71mm)	9.99" (253.75mm)	7th Wettest	Wettest since: 1998	1997
Feb 1996–Jan 1999 36-Month	118.95" (3,021.33mm)	96.31" (2,446.27mm)	22.64" (575.06mm)	124th Driest	Driest since: 1997	1931
Feb 1996–Jan 1999 36-Month	118.95" (3,021.33mm)	96.31" (2,446.27mm)	22.64" (575.06mm)	2nd Wettest	Wettest since: 1998	1998
Feb 1995–Jan 1999 48-Month	159.93" (4,062.22mm)	128.35" (3,260.09mm)	31.58" (802.13mm)	124th Driest	Driest since: 1998	1932
Feb 1995–Jan 1999 48-Month	159.93" (4,062.22mm)	128.35" (3,260.09mm)	31.58" (802.13mm)	1st Wettest	Wettest to Date	1999
Feb 1994–Jan 1999 60-Month	192.23" (4,882.64mm)	160.30" (4,071.62mm)	31.93" (811.02mm)	122nd Driest	Driest since: 1998	1933
Feb 1994–Jan 1999 60-Month	192.23" (4,882.64mm)	160.30" (4,071.62mm)	31.93" (811.02mm)	2nd Wettest	Wettest to Date	2000

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on January 27, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings