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 1923 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1923 1-Month	0.28	-0.15	0.43	81st Driest	Driest since: 1922	1976
December 1923 1-Month	0.28	-0.15	0.43	50th Wettest	Wettest since: 1920	1964
Nov–Dec 1923 2-Month	0.09	0.02	0.07	64th Driest	Driest since: 1922	1936, 1976
Nov–Dec 1923 2-Month	0.09	0.02	0.07	67th Wettest	Wettest since: 1921	1927
Oct–Dec 1923 3-Month	0.21	-0.01	0.22	73rd Driest	Driest since: 1922	1936
Oct–Dec 1923 3-Month	0.21	-0.01	0.22	58th Wettest	Wettest since: 1920	1927
Sep–Dec 1923 4-Month	-0.34	-0.01	-0.33	58th Driest	Driest since: 1922	1936
Sep–Dec 1923 4-Month	-0.34	-0.01	-0.33	73rd Wettest	Wettest since: 1921	1927
Aug–Dec 1923 5-Month	-0.21	-0.01	-0.20	70th Driest	Driest since: 1922	1936
Aug–Dec 1923 5-Month	-0.21	-0.01	-0.20	61st Wettest	Wettest since: 1921	1927
Jul–Dec 1923 6-Month	0.04	0.01	0.03	80th Driest	Driest since: 1922	1936
Jul–Dec 1923 6-Month	0.04	0.01	0.03	51st Wettest	Wettest since: 1920	1927
Jun–Dec 1923 7-Month	0.71	0.01	0.70	100th Driest	Driest since: 1922	1936
Jun–Dec 1923 7-Month	0.71	0.01	0.70	31st Wettest	Wettest since: 1920	1995
May–Dec 1923 8-Month	0.71	0.02	0.69	100th Driest	Driest since: 1922	1936
May–Dec 1923 8-Month	0.71	0.02	0.69	31st Wettest	Wettest since: 1916	1927
Apr–Dec 1923 9-Month	0.74	0.02	0.72	106th Driest	Driest since: 1922	1936
	0.74	0.02	0.72	25th Wettest	Wettest since: 1920	1927
	Ties: 1920
Mar–Dec 1923 10-Month	0.59	0.01	0.58	104th Driest	Driest since: 1922	1936
Mar–Dec 1923 10-Month	0.59	0.01	0.58	27th Wettest	Wettest since: 1920	1948
Feb–Dec 1923 11-Month	0.45	0.01	0.44	96th Driest	Driest since: 1922	1936
Feb–Dec 1923 11-Month	0.45	0.01	0.44	35th Wettest	Wettest since: 1920	1927
Jan–Dec 1923 12-Month	0.55	0.02	0.53	108th Driest	Driest since: 1922	1987
Jan–Dec 1923 12-Month	0.55	0.02	0.53	23rd Wettest	Wettest since: 1916	1927
Jul 1922–Dec 1923 18-Month	-0.20	0.02	-0.22	57th Driest	Driest since: 1922	1936
Jul 1922–Dec 1923 18-Month	-0.20	0.02	-0.22	73rd Wettest	Wettest since: 1921	1927
Jan 1922–Dec 1923 24-Month	-0.31	0.02	-0.33	42nd Driest	Driest since: 1922	1936
Jan 1922–Dec 1923 24-Month	-0.31	0.02	-0.33	88th Wettest	Wettest since: 1921	1996
Jan 1921–Dec 1923 36-Month	-0.14	0.02	-0.16	52nd Driest	Driest since: 1922	1936
	-0.14	0.02	-0.16	77th Wettest	Wettest since: 1921	1997
	Ties: 1900
Jan 1920–Dec 1923 48-Month	0.03	0.02	0.01	71st Driest	Driest since: 1922	1937
Jan 1920–Dec 1923 48-Month	0.03	0.02	0.01	57th Wettest	Wettest since: 1918	1998
Jan 1919–Dec 1923 60-Month	-0.12	0.02	-0.14	48th Driest	Driest since: 1922	1938
Jan 1919–Dec 1923 60-Month	-0.12	0.02	-0.14	79th Wettest	Wettest since: 1921	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 1923 Palmer Z-Index Rankings

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