Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. 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 1966

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
December 1966
1-Month		21.7°F
(-5.7°C)		23.0°F
(-5.0°C)		-1.3°F
(-0.7°C)		41st Coolest
Coolest since:
1909
88th Warmest
Warmest since:
1980
Nov–Dec 1966
2-Month		29.0°F
(-1.7°C)		27.5°F
(-2.5°C)		1.5°F
(0.8°C)		86th Coolest
Coolest since:
1895
43rd Warmest
Warmest since:
2017
Ties: 1963, 1969, 1976, 2007
Oct–Dec 1966
3-Month		34.1°F
(1.2°C)		33.5°F
(0.8°C)		0.6°F
(0.4°C)		76th Coolest
Coolest since:
1898
53rd Warmest
Warmest since:
1950, 2017
Ties: 2011
Sep–Dec 1966
4-Month		40.0°F
(4.4°C)		39.2°F
(4.0°C)		0.8°F
(0.4°C)		81st Coolest
Coolest since:
1898, 1912
48th Warmest
Warmest since:
2021
Ties: 1922
Aug–Dec 1966
5-Month		45.0°F
(7.2°C)		44.3°F
(6.8°C)		0.7°F
(0.4°C)		79th Coolest
Coolest since:
1912
50th Warmest
Warmest since:
2021
Ties: 1940
Jul–Dec 1966
6-Month		49.0°F
(9.4°C)		48.1°F
(8.9°C)		0.9°F
(0.5°C)		82nd Coolest
Coolest since:
1912
47th Warmest
Warmest since:
2021
Jun–Dec 1966
7-Month		50.6°F
(10.3°C)		49.9°F
(9.9°C)		0.7°F
(0.4°C)		78th Coolest
Coolest since:
1912
51st Warmest
Warmest since:
2021
Ties: 1901, 1942, 1990
May–Dec 1966
8-Month		51.0°F
(10.6°C)		50.0°F
(10.0°C)		1.0°F
(0.6°C)		88th Coolest
Coolest since:
1912
41st Warmest
Warmest since:
2021
Ties: 1901, 1960
Apr–Dec 1966
9-Month		49.9°F
(9.9°C)		49.1°F
(9.5°C)		0.8°F
(0.4°C)		84th Coolest
Coolest since:
1912
45th Warmest
Warmest since:
2021
Ties: 1901, 2019
Mar–Dec 1966
10-Month		48.3°F
(9.1°C)		47.5°F
(8.6°C)		0.8°F
(0.5°C)		83rd Coolest
Coolest since:
1912
46th Warmest
Warmest since:
2012
Ties: 1974, 1987, 1995, 2019
Feb–Dec 1966
11-Month		45.8°F
(7.7°C)		45.5°F
(7.5°C)		0.3°F
(0.2°C)		69th Coolest
Coolest since:
1912
60th Warmest
Warmest since:
2017
Ties: 1925, 1953, 2011
Jan–Dec 1966
12-Month		43.6°F
(6.4°C)		43.4°F
(6.3°C)		0.2°F
(0.1°C)		59th Coolest
Coolest since:
1895, 1912
70th Warmest
Warmest since:
2012
Ties: 1967, 1976, 1991
Jul 1965–Dec 1966
18-Month		45.2°F
(7.3°C)		45.0°F
(7.2°C)		0.2°F
(0.1°C)		67th Coolest
Coolest since:
1912
61st Warmest
Warmest since:
1934
Ties: 1901, 1907, 1926, 1941, 1982, 1991
Jan 1965–Dec 1966
24-Month		43.3°F
(6.3°C)		43.4°F
(6.3°C)		-0.1°F
(0.0°C)		50th Coolest
Coolest since:
1913
78th Warmest
Warmest since:
2018
Ties: 1921, 1953, 1983
Jan 1964–Dec 1966
36-Month		42.9°F
(6.1°C)		43.4°F
(6.3°C)		-0.5°F
(-0.2°C)		29th Coolest
Coolest since:
1899, 1913
98th Warmest
Warmest since:
2017
Ties: 1921, 1949, 1951, 1952, 1973, 1976, 1984
Jan 1963–Dec 1966
48-Month		43.3°F
(6.3°C)		43.4°F
(6.3°C)		-0.1°F
(0.0°C)		49th Coolest
Coolest since:
1898
77th Warmest
Warmest since:
2018
Ties: 1945, 1949, 1969
Jan 1962–Dec 1966
60-Month		43.5°F
(6.4°C)		43.4°F
(6.3°C)		0.1°F
(0.1°C)		56th Coolest
Coolest since:
1899
69th Warmest
Warmest since:
2018
Ties: 1934, 1946, 1955, 1986

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