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 1910

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
December 1910
1-Month		25.5°F
(-3.6°C)		23.0°F
(-5.0°C)		2.5°F
(1.4°C)		98th Coolest
Coolest since:
1909
31st Warmest
Warmest since:
1980
Nov–Dec 1910
2-Month		31.2°F
(-0.4°C)		27.5°F
(-2.5°C)		3.7°F
(2.1°C)		114th Coolest
Coolest since:
1895
15th Warmest
Warmest to Date
2017
Ties: 2016
Oct–Dec 1910
3-Month		35.8°F
(2.1°C)		33.5°F
(0.8°C)		2.3°F
(1.3°C)		106th Coolest
Coolest since:
1898
23rd Warmest
Warmest to Date
1950, 2017
Ties: 1981, 2003
Sep–Dec 1910
4-Month		41.4°F
(5.2°C)		39.2°F
(4.0°C)		2.2°F
(1.2°C)		105th Coolest
Coolest since:
1898, 1912
24th Warmest
Warmest to Date
2021
Ties: 1998
Aug–Dec 1910
5-Month		46.0°F
(7.8°C)		44.3°F
(6.8°C)		1.7°F
(1.0°C)		101st Coolest
Coolest since:
1912
28th Warmest
Warmest to Date
2021
Ties: 2022
Jul–Dec 1910
6-Month		49.6°F
(9.8°C)		48.1°F
(8.9°C)		1.5°F
(0.9°C)		100th Coolest
Coolest since:
1912
29th Warmest
Warmest to Date
2021
Ties: 1917, 1921, 1988
Jun–Dec 1910
7-Month		51.4°F
(10.8°C)		49.9°F
(9.9°C)		1.5°F
(0.9°C)		104th Coolest
Coolest since:
1912
25th Warmest
Warmest to Date
2021
Ties: 1934, 1998, 1999
May–Dec 1910
8-Month		51.5°F
(10.8°C)		50.0°F
(10.0°C)		1.5°F
(0.8°C)		102nd Coolest
Coolest since:
1912
27th Warmest
Warmest to Date
2021
Ties: 1940, 2000, 2006
Apr–Dec 1910
9-Month		50.8°F
(10.4°C)		49.1°F
(9.5°C)		1.7°F
(0.9°C)		106th Coolest
Coolest since:
1912
23rd Warmest
Warmest to Date
2021
Ties: 1954, 1958, 2006
Mar–Dec 1910
10-Month		49.7°F
(9.8°C)		47.5°F
(8.6°C)		2.2°F
(1.2°C)		116th Coolest
Coolest since:
1912
13th Warmest
Warmest to Date
2012
Feb–Dec 1910
11-Month		47.1°F
(8.4°C)		45.5°F
(7.5°C)		1.6°F
(0.9°C)		108th Coolest
Coolest since:
1912
21st Warmest
Warmest to Date
2017
Ties: 1958, 1989, 2022
Jan–Dec 1910
12-Month		44.7°F
(7.1°C)		43.4°F
(6.3°C)		1.3°F
(0.8°C)		95th Coolest
Coolest since:
1895, 1912
34th Warmest
Warmest to Date
2012
Ties: 1921, 1989, 1992, 2010
Jul 1909–Dec 1910
18-Month		45.4°F
(7.4°C)		45.0°F
(7.2°C)		0.4°F
(0.2°C)		76th Coolest
Coolest since:
1912
52nd Warmest
Warmest to Date
1934
Ties: 1946, 1950, 1967
Jan 1909–Dec 1910
24-Month		43.4°F
(6.3°C)		43.4°F
(6.3°C)		0.0°F
(0.0°C)		54th Coolest
Coolest since:
1913
74th Warmest
Warmest since:
2018
Ties: 1907, 1957, 1964, 1972
Jan 1908–Dec 1910
36-Month		42.6°F
(5.9°C)		43.4°F
(6.3°C)		-0.8°F
(-0.4°C)		22nd Coolest
Coolest since:
1899, 1913
105th Warmest
Warmest since:
2017
Ties: 1903, 1908, 1929
Jan 1907–Dec 1910
48-Month		43.0°F
(6.1°C)		43.4°F
(6.3°C)		-0.4°F
(-0.2°C)		34th Coolest
Coolest since:
1898
92nd Warmest
Warmest since:
2018
Ties: 1903, 1929, 1967, 1971, 1973, 1974, 1985
Jan 1906–Dec 1910
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: 1911, 1927, 1976

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