Climate at a Glance | Divisional Rankings | National Centers for Environmental Information (NCEI)

Divisional Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska or Hawaii. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Idaho, Climate Division 2

December 2001 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 2001 1-Month	-0.48	-0.15	-0.33	56th Driest	Driest since: 2000	1976
December 2001 1-Month	-0.48	-0.15	-0.33	75th Wettest	Wettest since: 1999	1964
Nov–Dec 2001 2-Month	-0.46	0.02	-0.48	58th Driest	Driest since: 2000	1936, 1976
Nov–Dec 2001 2-Month	-0.46	0.02	-0.48	73rd Wettest	Wettest since: 1999	1927
Oct–Dec 2001 3-Month	0.40	-0.01	0.41	81st Driest	Driest since: 2000	1936
Oct–Dec 2001 3-Month	0.40	-0.01	0.41	50th Wettest	Wettest since: 1998	1927
Sep–Dec 2001 4-Month	-0.38	-0.01	-0.37	57th Driest	Driest since: 1999	1936
Sep–Dec 2001 4-Month	-0.38	-0.01	-0.37	74th Wettest	Wettest since: 2000	1927
Aug–Dec 2001 5-Month	-0.61	-0.01	-0.60	46th Driest	Driest since: 1993	1936
Aug–Dec 2001 5-Month	-0.61	-0.01	-0.60	85th Wettest	Wettest since: 2000	1927
Jul–Dec 2001 6-Month	-0.41	0.01	-0.42	57th Driest	Driest since: 2000	1936
Jul–Dec 2001 6-Month	-0.41	0.01	-0.42	74th Wettest	Wettest since: 1999	1927
Jun–Dec 2001 7-Month	-0.28	0.01	-0.29	64th Driest	Driest since: 2000	1936
Jun–Dec 2001 7-Month	-0.28	0.01	-0.29	67th Wettest	Wettest since: 1999	1995
May–Dec 2001 8-Month	-0.45	0.02	-0.47	53rd Driest	Driest since: 1992	1936
May–Dec 2001 8-Month	-0.45	0.02	-0.47	78th Wettest	Wettest since: 2000	1927
Apr–Dec 2001 9-Month	-0.27	0.02	-0.29	56th Driest	Driest since: 2000	1936
Apr–Dec 2001 9-Month	-0.27	0.02	-0.29	75th Wettest	Wettest since: 1998	1927
Mar–Dec 2001 10-Month	-0.37	0.01	-0.38	47th Driest	Driest since: 2000	1936
Mar–Dec 2001 10-Month	-0.37	0.01	-0.38	84th Wettest	Wettest since: 1999	1948
Feb–Dec 2001 11-Month	-0.48	0.01	-0.49	39th Driest	Driest since: 1994	1936
Feb–Dec 2001 11-Month	-0.48	0.01	-0.49	92nd Wettest	Wettest since: 2000	1927
Jan–Dec 2001 12-Month	-0.59	0.02	-0.61	33rd Driest	Driest since: 1994	1987
Jan–Dec 2001 12-Month	-0.59	0.02	-0.61	98th Wettest	Wettest since: 2000	1927
Jul 2000–Dec 2001 18-Month	-0.53	0.02	-0.55	29th Driest	Driest since: 1992	1936
Jul 2000–Dec 2001 18-Month	-0.53	0.02	-0.55	101st Wettest	Wettest since: 2000	1927
Jan 2000–Dec 2001 24-Month	-0.47	0.02	-0.49	31st Driest	Driest since: 1993	1936
	-0.47	0.02	-0.49	99th Wettest	Wettest since: 2000	1996
	Ties: 1953
Jan 1999–Dec 2001 36-Month	-0.31	0.02	-0.33	38th Driest	Driest since: 1994	1936
Jan 1999–Dec 2001 36-Month	-0.31	0.02	-0.33	91st Wettest	Wettest since: 2000	1997
Jan 1998–Dec 2001 48-Month	-0.12	0.02	-0.14	53rd Driest	Driest since: 1994	1937
	-0.12	0.02	-0.14	75th Wettest	Wettest since: 2000	1998
	Ties: 1980
Jan 1997–Dec 2001 60-Month	0.07	0.02	0.05	76th Driest	Driest since: 1995	1938
	0.07	0.02	0.05	51st Wettest	Wettest since: 2000	1999
	Ties: 1920

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 31, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings

Climate at a Glance Divisional Rankings

Divisional Rankings

Idaho, Climate Division 2

December 2001 Palmer Z-Index Rankings

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