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.

Great Basin

Average Temperature Rankings, December 1991

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
December 1991 1-Month	30.0°F (-1.1°C)	29.7°F (-1.3°C)	0.3°F (0.2°C)	69th Coolest	Coolest since: 1990	1909, 1932
	30.0°F (-1.1°C)	29.7°F (-1.3°C)	0.3°F (0.2°C)	60th Warmest	Warmest since: 1989	1917
	Ties: 1936, 1976
Nov–Dec 1991 2-Month	34.0°F (1.1°C)	33.7°F (0.9°C)	0.3°F (0.2°C)	67th Coolest	Coolest since: 1990	1931
	34.0°F (1.1°C)	33.7°F (0.9°C)	0.3°F (0.2°C)	62nd Warmest	Warmest since: 1989	1917
	Ties: 1959, 1997
Oct–Dec 1991 3-Month	40.0°F (4.4°C)	39.0°F (3.9°C)	1.0°F (0.5°C)	87th Coolest	Coolest since: 1990	1919
	40.0°F (4.4°C)	39.0°F (3.9°C)	1.0°F (0.5°C)	42nd Warmest	Warmest since: 1989	1950
	Ties: 1953, 1987
Sep–Dec 1991 4-Month	45.6°F (7.6°C)	44.4°F (6.9°C)	1.2°F (0.7°C)	91st Coolest	Coolest since: 1990	1971
	45.6°F (7.6°C)	44.4°F (6.9°C)	1.2°F (0.7°C)	38th Warmest	Warmest since: 1988	2014
	Ties: 1960, 1988, 2022
Aug–Dec 1991 5-Month	50.6°F (10.3°C)	49.4°F (9.7°C)	1.2°F (0.6°C)	93rd Coolest	Coolest since: 1990	1916
	50.6°F (10.3°C)	49.4°F (9.7°C)	1.2°F (0.6°C)	36th Warmest	Warmest since: 1988	2020
	Ties: 1988
Jul–Dec 1991 6-Month	54.3°F (12.4°C)	53.1°F (11.7°C)	1.2°F (0.7°C)	93rd Coolest	Coolest since: 1990	1916
	54.3°F (12.4°C)	53.1°F (11.7°C)	1.2°F (0.7°C)	36th Warmest	Warmest since: 1988	2020
	Ties: 1901, 1953, 2002
Jun–Dec 1991 7-Month	55.4°F (13.0°C)	54.6°F (12.6°C)	0.8°F (0.4°C)	87th Coolest	Coolest since: 1990	1916
	55.4°F (13.0°C)	54.6°F (12.6°C)	0.8°F (0.4°C)	42nd Warmest	Warmest since: 1989	2021
	Ties: 1974, 1979, 1987, 1989
May–Dec 1991 8-Month	54.8°F (12.7°C)	54.6°F (12.6°C)	0.2°F (0.1°C)	68th Coolest	Coolest since: 1990	1916
	54.8°F (12.7°C)	54.6°F (12.6°C)	0.2°F (0.1°C)	61st Warmest	Warmest since: 1989	2021
	Ties: 1931, 1943, 1955, 1959
Apr–Dec 1991 9-Month	53.5°F (11.9°C)	53.6°F (12.0°C)	-0.1°F (-0.1°C)	55th Coolest	Coolest since: 1985	1912
	53.5°F (11.9°C)	53.6°F (12.0°C)	-0.1°F (-0.1°C)	74th Warmest	Warmest since: 1990	2021
	Ties: 1904, 1915, 1925, 1961, 1985
Mar–Dec 1991 10-Month	51.8°F (11.0°C)	52.1°F (11.2°C)	-0.3°F (-0.2°C)	46th Coolest	Coolest since: 1985	1912
	51.8°F (11.0°C)	52.1°F (11.2°C)	-0.3°F (-0.2°C)	83rd Warmest	Warmest since: 1990	1934, 2021
	Ties: 1952, 1953, 1972, 1985
Feb–Dec 1991 11-Month	50.6°F (10.3°C)	50.3°F (10.2°C)	0.3°F (0.1°C)	70th Coolest	Coolest since: 1985	1911, 1912
	50.6°F (10.3°C)	50.3°F (10.2°C)	0.3°F (0.1°C)	59th Warmest	Warmest since: 1990	1934
	Ties: 1901, 1928
Jan–Dec 1991 12-Month	48.7°F (9.3°C)	48.5°F (9.2°C)	0.2°F (0.1°C)	67th Coolest	Coolest since: 1985	1944
Jan–Dec 1991 12-Month	48.7°F (9.3°C)	48.5°F (9.2°C)	0.2°F (0.1°C)	62nd Warmest	Warmest since: 1990	1934
Jul 1990–Dec 1991 18-Month	50.1°F (10.1°C)	50.0°F (10.0°C)	0.1°F (0.1°C)	61st Coolest	Coolest since: 1985	1912, 1913
Jul 1990–Dec 1991 18-Month	50.1°F (10.1°C)	50.0°F (10.0°C)	0.1°F (0.1°C)	67th Warmest	Warmest since: 1990	1934
Jan 1990–Dec 1991 24-Month	48.9°F (9.4°C)	48.4°F (9.1°C)	0.5°F (0.3°C)	83rd Coolest	Coolest since: 1986	1912, 1913
	48.9°F (9.4°C)	48.4°F (9.1°C)	0.5°F (0.3°C)	45th Warmest	Warmest since: 1990	2015
	Ties: 1921, 1936, 1939, 1977, 1978, 1982, 1986, 1993, 1998
Jan 1989–Dec 1991 36-Month	49.0°F (9.4°C)	48.4°F (9.1°C)	0.6°F (0.3°C)	83rd Coolest	Coolest since: 1986	1913
	49.0°F (9.4°C)	48.4°F (9.1°C)	0.6°F (0.3°C)	44th Warmest	Warmest since: 1990	2016
	Ties: 1934, 1982
Jan 1988–Dec 1991 48-Month	49.1°F (9.5°C)	48.4°F (9.1°C)	0.7°F (0.4°C)	89th Coolest	Coolest since: 1987	1914
	49.1°F (9.5°C)	48.4°F (9.1°C)	0.7°F (0.4°C)	37th Warmest	Warmest since: 1990	2017
	Ties: 1941, 1960, 1994
Jan 1987–Dec 1991 60-Month	49.2°F (9.6°C)	48.4°F (9.1°C)	0.8°F (0.5°C)	94th Coolest	Coolest since: 1989	1899, 1915, 1916
	49.2°F (9.6°C)	48.4°F (9.1°C)	0.8°F (0.5°C)	31st Warmest	Warmest since: 1990	2018
	Ties: 1938, 1962, 1981, 1989

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published February 2023, retrieved on February 9, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings