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.

Upper Colorado River Basin

Average Temperature Rankings, December 1973

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
December 1973 1-Month	24.1°F (-4.4°C)	23.0°F (-5.0°C)	1.1°F (0.6°C)	77th Coolest	Coolest since: 1972	1909
	24.1°F (-4.4°C)	23.0°F (-5.0°C)	1.1°F (0.6°C)	52nd Warmest	Warmest since: 1969	1980
	Ties: 1979
Nov–Dec 1973 2-Month	28.4°F (-2.0°C)	27.4°F (-2.6°C)	1.0°F (0.6°C)	76th Coolest	Coolest since: 1972	1895
	28.4°F (-2.0°C)	27.4°F (-2.6°C)	1.0°F (0.6°C)	53rd Warmest	Warmest since: 1970	2017
	Ties: 1904
Oct–Dec 1973 3-Month	34.5°F (1.4°C)	33.4°F (0.8°C)	1.1°F (0.6°C)	86th Coolest	Coolest since: 1972	1898
	34.5°F (1.4°C)	33.4°F (0.8°C)	1.1°F (0.6°C)	43rd Warmest	Warmest since: 1965	1950, 2017
	Ties: 1941, 1987
Sep–Dec 1973 4-Month	39.6°F (4.2°C)	39.2°F (4.0°C)	0.4°F (0.2°C)	74th Coolest	Coolest since: 1972	1898, 1912
	39.6°F (4.2°C)	39.2°F (4.0°C)	0.4°F (0.2°C)	55th Warmest	Warmest since: 1966	2021
	Ties: 1907, 1946, 1997
Aug–Dec 1973 5-Month	44.8°F (7.1°C)	44.4°F (6.9°C)	0.4°F (0.2°C)	74th Coolest	Coolest since: 1972	1912
	44.8°F (7.1°C)	44.4°F (6.9°C)	0.4°F (0.2°C)	55th Warmest	Warmest since: 1966	2021
	Ties: 1987, 2000
Jul–Dec 1973 6-Month	48.2°F (9.0°C)	48.1°F (8.9°C)	0.1°F (0.1°C)	58th Coolest	Coolest since: 1972	1912
	48.2°F (9.0°C)	48.1°F (8.9°C)	0.1°F (0.1°C)	71st Warmest	Warmest since: 1969	2021
	Ties: 1947, 1997
Jun–Dec 1973 7-Month	49.8°F (9.9°C)	49.8°F (9.9°C)	0.0°F (0.0°C)	56th Coolest	Coolest since: 1972	1912
	49.8°F (9.9°C)	49.8°F (9.9°C)	0.0°F (0.0°C)	73rd Warmest	Warmest since: 1969	2021
	Ties: 1969, 1985
May–Dec 1973 8-Month	50.0°F (10.0°C)	50.1°F (10.1°C)	-0.1°F (-0.1°C)	52nd Coolest	Coolest since: 1972	1912
	50.0°F (10.0°C)	50.1°F (10.1°C)	-0.1°F (-0.1°C)	77th Warmest	Warmest since: 1969	2021
	Ties: 1935, 1947, 1992
Apr–Dec 1973 9-Month	48.5°F (9.2°C)	49.0°F (9.4°C)	-0.5°F (-0.2°C)	36th Coolest	Coolest since: 1971	1912
	48.5°F (9.2°C)	49.0°F (9.4°C)	-0.5°F (-0.2°C)	93rd Warmest	Warmest since: 1972	2021
	Ties: 1919, 1967, 1983, 1984
Mar–Dec 1973 10-Month	46.7°F (8.2°C)	47.4°F (8.6°C)	-0.7°F (-0.4°C)	31st Coolest	Coolest since: 1971	1912
	46.7°F (8.2°C)	47.4°F (8.6°C)	-0.7°F (-0.4°C)	98th Warmest	Warmest since: 1972	2012
	Ties: 1896, 1915, 1928, 1948, 1957
Feb–Dec 1973 11-Month	44.4°F (6.9°C)	45.5°F (7.5°C)	-1.1°F (-0.6°C)	21st Coolest	Coolest since: 1968	1912
	44.4°F (6.9°C)	45.5°F (7.5°C)	-1.1°F (-0.6°C)	108th Warmest	Warmest since: 1972	2017
	Ties: 1968
Jan–Dec 1973 12-Month	41.8°F (5.4°C)	43.4°F (6.3°C)	-1.6°F (-0.9°C)	10th Coolest	Coolest since: 1932	1895, 1912
	41.8°F (5.4°C)	43.4°F (6.3°C)	-1.6°F (-0.9°C)	119th Warmest	Warmest since: 1972	2012
	Ties: 1899, 1920, 1924, 1932
Jul 1972–Dec 1973 18-Month	43.4°F (6.3°C)	45.0°F (7.2°C)	-1.6°F (-0.9°C)	10th Coolest	Coolest since: 1929	1912
	43.4°F (6.3°C)	45.0°F (7.2°C)	-1.6°F (-0.9°C)	118th Warmest	Warmest since: 1972	1934
	Ties: 1908
Jan 1972–Dec 1973 24-Month	42.9°F (6.1°C)	43.4°F (6.3°C)	-0.5°F (-0.2°C)	36th Coolest	Coolest since: 1969	1913
	42.9°F (6.1°C)	43.4°F (6.3°C)	-0.5°F (-0.2°C)	92nd Warmest	Warmest since: 1972	2018
	Ties: 1905, 1969
Jan 1971–Dec 1973 36-Month	42.9°F (6.1°C)	43.4°F (6.3°C)	-0.5°F (-0.2°C)	30th Coolest	Coolest since: 1966	1899, 1913
	42.9°F (6.1°C)	43.4°F (6.3°C)	-0.5°F (-0.2°C)	97th Warmest	Warmest since: 1972	2017
	Ties: 1921, 1949, 1951, 1952, 1976, 1984
Jan 1970–Dec 1973 48-Month	43.0°F (6.1°C)	43.4°F (6.3°C)	-0.4°F (-0.2°C)	34th Coolest	Coolest since: 1971	1898
	43.0°F (6.1°C)	43.4°F (6.3°C)	-0.4°F (-0.2°C)	92nd Warmest	Warmest since: 1972	2018
	Ties: 1903, 1910, 1929, 1967, 1971, 1974, 1985
Jan 1969–Dec 1973 60-Month	43.1°F (6.2°C)	43.3°F (6.3°C)	-0.2°F (-0.1°C)	40th Coolest	Coolest since: 1971	1899
	43.1°F (6.2°C)	43.3°F (6.3°C)	-0.2°F (-0.1°C)	85th Warmest	Warmest since: 1972	2018
	Ties: 1904, 1928, 1953, 1971

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on January 31, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings