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 1904 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1904 1-Month	-1.25	-0.15	-1.10	41st Driest	Driest since: 1901	1976
December 1904 1-Month	-1.25	-0.15	-1.10	90th Wettest	Wettest since: 1903	1964
Nov–Dec 1904 2-Month	-2.26	0.02	-2.28	13th Driest	Driest to Date	1936, 1976
Nov–Dec 1904 2-Month	-2.26	0.02	-2.28	118th Wettest	Wettest since: 1903	1927
Oct–Dec 1904 3-Month	-1.80	-0.01	-1.79	16th Driest	Driest since: 1901	1936
Oct–Dec 1904 3-Month	-1.80	-0.01	-1.79	115th Wettest	Wettest since: 1903	1927
Sep–Dec 1904 4-Month	-1.87	-0.01	-1.86	9th Driest	Driest to Date	1936
Sep–Dec 1904 4-Month	-1.87	-0.01	-1.86	122nd Wettest	Wettest since: 1903	1927
Aug–Dec 1904 5-Month	-1.67	-0.01	-1.66	9th Driest	Driest to Date	1936
Aug–Dec 1904 5-Month	-1.67	-0.01	-1.66	122nd Wettest	Wettest since: 1903	1927
Jul–Dec 1904 6-Month	-1.19	0.01	-1.20	17th Driest	Driest to Date	1936
Jul–Dec 1904 6-Month	-1.19	0.01	-1.20	114th Wettest	Wettest since: 1903	1927
Jun–Dec 1904 7-Month	-0.99	0.01	-1.00	25th Driest	Driest since: 1898	1936
Jun–Dec 1904 7-Month	-0.99	0.01	-1.00	106th Wettest	Wettest since: 1903	1995
May–Dec 1904 8-Month	-1.13	0.02	-1.15	19th Driest	Driest to Date	1936
May–Dec 1904 8-Month	-1.13	0.02	-1.15	112th Wettest	Wettest since: 1903	1927
Apr–Dec 1904 9-Month	-1.13	0.02	-1.15	18th Driest	Driest to Date	1936
Apr–Dec 1904 9-Month	-1.13	0.02	-1.15	113th Wettest	Wettest since: 1903	1927
Mar–Dec 1904 10-Month	-0.57	0.01	-0.58	36th Driest	Driest since: 1898	1936
	-0.57	0.01	-0.58	95th Wettest	Wettest since: 1903	1948
	Ties: 1895
Feb–Dec 1904 11-Month	-0.09	0.01	-0.10	64th Driest	Driest since: 1901	1936
Feb–Dec 1904 11-Month	-0.09	0.01	-0.10	67th Wettest	Wettest since: 1903	1927
Jan–Dec 1904 12-Month	-0.10	0.02	-0.12	65th Driest	Driest since: 1901	1987
Jan–Dec 1904 12-Month	-0.10	0.02	-0.12	66th Wettest	Wettest since: 1903	1927
Jul 1903–Dec 1904 18-Month	0.42	0.02	0.40	99th Driest	Driest since: 1902	1936
Jul 1903–Dec 1904 18-Month	0.42	0.02	0.40	31st Wettest	Wettest since: 1903	1927
Jan 1903–Dec 1904 24-Month	0.31	0.02	0.29	89th Driest	Driest since: 1902	1936
Jan 1903–Dec 1904 24-Month	0.31	0.02	0.29	41st Wettest	Wettest since: 1903	1996
Jan 1902–Dec 1904 36-Month	0.30	0.02	0.28	98th Driest	Driest since: 1903	1936
Jan 1902–Dec 1904 36-Month	0.30	0.02	0.28	31st Wettest	Wettest to Date	1997
Jan 1901–Dec 1904 48-Month	0.17	0.02	0.15	89th Driest	Driest since: 1903	1937
Jan 1901–Dec 1904 48-Month	0.17	0.02	0.15	39th Wettest	Wettest to Date	1998
Jan 1900–Dec 1904 60-Month	0.10	0.02	0.08	79th Driest	Driest since: 1902	1938
Jan 1900–Dec 1904 60-Month	0.10	0.02	0.08	48th Wettest	Wettest since: 1903	1999

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 1904 Palmer Z-Index Rankings

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