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.

Utah, Climate Division 5

December 1999 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1999 1-Month	-2.37	-0.08	-2.29	10th Driest	Driest since: 1989	1976
December 1999 1-Month	-2.37	-0.08	-2.29	121st Wettest	Wettest since: 1998	1964
Nov–Dec 1999 2-Month	-3.00	-0.05	-2.95	4th Driest	Driest since: 1976	1976
Nov–Dec 1999 2-Month	-3.00	-0.05	-2.95	127th Wettest	Wettest since: 1998	1983
Oct–Dec 1999 3-Month	-2.89	0.03	-2.92	2nd Driest	Driest since: 1976	1976
Oct–Dec 1999 3-Month	-2.89	0.03	-2.92	129th Wettest	Wettest since: 1998	1983
Sep–Dec 1999 4-Month	-2.20	0.08	-2.28	6th Driest	Driest since: 1976	1976
Sep–Dec 1999 4-Month	-2.20	0.08	-2.28	125th Wettest	Wettest since: 1998	1982
Aug–Dec 1999 5-Month	-1.54	0.08	-1.62	9th Driest	Driest since: 1976	2020
Aug–Dec 1999 5-Month	-1.54	0.08	-1.62	122nd Wettest	Wettest since: 1998	1983
Jul–Dec 1999 6-Month	-1.07	0.08	-1.15	22nd Driest	Driest since: 1988	2020
	-1.07	0.08	-1.15	109th Wettest	Wettest since: 1998	1983
	Ties: 1931
Jun–Dec 1999 7-Month	-0.84	0.06	-0.90	30th Driest	Driest since: 1989	1935
Jun–Dec 1999 7-Month	-0.84	0.06	-0.90	101st Wettest	Wettest since: 1998	1983
May–Dec 1999 8-Month	-0.47	0.07	-0.54	45th Driest	Driest since: 1994	1958
	-0.47	0.07	-0.54	86th Wettest	Wettest since: 1998	1983
	Ties: 1917, 1948
Apr–Dec 1999 9-Month	0.01	0.07	-0.06	75th Driest	Driest since: 1994	2020
	0.01	0.07	-0.06	56th Wettest	Wettest since: 1998	1983
	Ties: 1978
Mar–Dec 1999 10-Month	-0.22	0.09	-0.31	56th Driest	Driest since: 1994	1934
Mar–Dec 1999 10-Month	-0.22	0.09	-0.31	75th Wettest	Wettest since: 1998	1983
Feb–Dec 1999 11-Month	-0.09	0.11	-0.20	61st Driest	Driest since: 1994	1934
Feb–Dec 1999 11-Month	-0.09	0.11	-0.20	70th Wettest	Wettest since: 1998	1983
Jan–Dec 1999 12-Month	0.02	0.13	-0.11	61st Driest	Driest since: 1994	1934
	0.02	0.13	-0.11	70th Wettest	Wettest since: 1998	1983
	Ties: 1950
Jul 1998–Dec 1999 18-Month	0.21	0.11	0.10	75th Driest	Driest since: 1994	1934
	0.21	0.11	0.10	55th Wettest	Wettest since: 1998	1983
	Ties: 1975
Jan 1998–Dec 1999 24-Month	0.64	0.13	0.51	111th Driest	Driest since: 1995	1934
	0.64	0.13	0.51	19th Wettest	Wettest since: 1998	1983
	Ties: 1986
Jan 1997–Dec 1999 36-Month	0.73	0.13	0.60	118th Driest	Driest since: 1996	1935
Jan 1997–Dec 1999 36-Month	0.73	0.13	0.60	11th Wettest	Wettest since: 1998	1984
Jan 1996–Dec 1999 48-Month	0.70	0.13	0.57	118th Driest	Driest since: 1997	1934
Jan 1996–Dec 1999 48-Month	0.70	0.13	0.57	10th Wettest	Wettest since: 1998	1985
Jan 1995–Dec 1999 60-Month	0.75	0.12	0.63	118th Driest	Driest since: 1998	1935
Jan 1995–Dec 1999 60-Month	0.75	0.12	0.63	9th Wettest	Wettest since: 1987	1986

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 26, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings

Climate at a Glance Divisional Rankings

Divisional Rankings

Utah, Climate Division 5

December 1999 Palmer Z-Index Rankings

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