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 1911

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
December 1911
1-Month		17.8°F
(-7.9°C)		23.0°F
(-5.0°C)		-5.2°F
(-2.9°C)		17th Coolest
Coolest since:
1909
112th Warmest
Warmest since:
1980
Ties: 1972
Nov–Dec 1911
2-Month		22.8°F
(-5.1°C)		27.5°F
(-2.5°C)		-4.7°F
(-2.6°C)		5th Coolest
Coolest since:
1895
124th Warmest
Warmest since:
2017
Oct–Dec 1911
3-Month		29.1°F
(-1.6°C)		33.5°F
(0.8°C)		-4.4°F
(-2.4°C)		4th Coolest
Coolest since:
1898
125th Warmest
Warmest since:
1950, 2017
Sep–Dec 1911
4-Month		36.0°F
(2.2°C)		39.2°F
(4.0°C)		-3.2°F
(-1.8°C)		4th Coolest
Coolest since:
1898, 1912
125th Warmest
Warmest since:
2021
Ties: 1908, 1961
Aug–Dec 1911
5-Month		41.4°F
(5.2°C)		44.3°F
(6.8°C)		-2.9°F
(-1.6°C)		4th Coolest
Coolest since:
1912
125th Warmest
Warmest since:
2021
Ties: 1916
Jul–Dec 1911
6-Month		45.2°F
(7.3°C)		48.1°F
(8.9°C)		-2.9°F
(-1.6°C)		3rd Coolest
Coolest since:
1912
126th Warmest
Warmest since:
2021
Jun–Dec 1911
7-Month		47.3°F
(8.5°C)		49.9°F
(9.9°C)		-2.6°F
(-1.4°C)		4th Coolest
Coolest since:
1912
125th Warmest
Warmest since:
2021
Ties: 1916
May–Dec 1911
8-Month		47.8°F
(8.8°C)		50.0°F
(10.0°C)		-2.2°F
(-1.2°C)		5th Coolest
Coolest since:
1912
124th Warmest
Warmest since:
2021
Apr–Dec 1911
9-Month		47.1°F
(8.4°C)		49.1°F
(9.5°C)		-2.0°F
(-1.1°C)		6th Coolest
Coolest since:
1912
123rd Warmest
Warmest since:
2021
Mar–Dec 1911
10-Month		46.0°F
(7.8°C)		47.5°F
(8.6°C)		-1.5°F
(-0.8°C)		12th Coolest
Coolest since:
1912
117th Warmest
Warmest since:
2012
Ties: 1968
Feb–Dec 1911
11-Month		44.0°F
(6.7°C)		45.5°F
(7.5°C)		-1.5°F
(-0.8°C)		13th Coolest
Coolest since:
1912
116th Warmest
Warmest since:
2017
Ties: 1917, 1964
Jan–Dec 1911
12-Month		42.6°F
(5.9°C)		43.4°F
(6.3°C)		-0.8°F
(-0.4°C)		32nd Coolest
Coolest since:
1895, 1912
97th Warmest
Warmest since:
2012
Ties: 1948, 1951
Jul 1910–Dec 1911
18-Month		44.9°F
(7.2°C)		45.0°F
(7.2°C)		-0.1°F
(0.0°C)		50th Coolest
Coolest since:
1912
78th Warmest
Warmest since:
1934
Ties: 1951, 1972, 1974
Jan 1910–Dec 1911
24-Month		43.7°F
(6.5°C)		43.4°F
(6.3°C)		0.3°F
(0.2°C)		71st Coolest
Coolest since:
1913
57th Warmest
Warmest since:
2018
Ties: 1926, 1937, 1944, 1946, 1962
Jan 1909–Dec 1911
36-Month		43.1°F
(6.2°C)		43.4°F
(6.3°C)		-0.3°F
(-0.1°C)		45th Coolest
Coolest since:
1899, 1913
82nd Warmest
Warmest since:
2017
Ties: 1953, 1968, 1969, 1985
Jan 1908–Dec 1911
48-Month		42.6°F
(5.9°C)		43.4°F
(6.3°C)		-0.8°F
(-0.4°C)		19th Coolest
Coolest since:
1898
107th Warmest
Warmest since:
2018
Ties: 1908, 1931, 1933, 1976
Jan 1907–Dec 1911
60-Month		42.9°F
(6.1°C)		43.4°F
(6.3°C)		-0.5°F
(-0.2°C)		33rd Coolest
Coolest since:
1899
92nd Warmest
Warmest since:
2018
Ties: 1910, 1927, 1976

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