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 2019

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
December 2019
1-Month		24.2°F
(-4.3°C)		23.0°F
(-5.0°C)		1.2°F
(0.7°C)		81st Coolest
Coolest since:
1909
48th Warmest
Warmest since:
1980
Ties: 1901, 1936, 1944
Nov–Dec 2019
2-Month		29.7°F
(-1.3°C)		27.5°F
(-2.5°C)		2.2°F
(1.2°C)		102nd Coolest
Coolest since:
1895
27th Warmest
Warmest since:
2017
Ties: 1906, 1946, 1989
Oct–Dec 2019
3-Month		33.0°F
(0.6°C)		33.5°F
(0.8°C)		-0.5°F
(-0.2°C)		48th Coolest
Coolest since:
1898
81st Warmest
Warmest since:
1950, 2017
Ties: 1925, 1985, 2018
Sep–Dec 2019
4-Month		39.9°F
(4.4°C)		39.2°F
(4.0°C)		0.7°F
(0.4°C)		79th Coolest
Coolest since:
1898, 1912
50th Warmest
Warmest since:
2021
Ties: 1983
Aug–Dec 2019
5-Month		45.6°F
(7.6°C)		44.3°F
(6.8°C)		1.3°F
(0.8°C)		94th Coolest
Coolest since:
1912
35th Warmest
Warmest since:
2021
Ties: 1942, 1988, 2018
Jul–Dec 2019
6-Month		49.5°F
(9.7°C)		48.1°F
(8.9°C)		1.4°F
(0.8°C)		96th Coolest
Coolest since:
1912
33rd Warmest
Warmest since:
2021
Ties: 1950, 1989, 2011
Jun–Dec 2019
7-Month		51.0°F
(10.6°C)		49.9°F
(9.9°C)		1.1°F
(0.7°C)		91st Coolest
Coolest since:
1912
38th Warmest
Warmest since:
2021
Ties: 1940, 1953, 1954, 2006
May–Dec 2019
8-Month		50.5°F
(10.3°C)		50.0°F
(10.0°C)		0.5°F
(0.3°C)		74th Coolest
Coolest since:
1912
55th Warmest
Warmest since:
2021
Ties: 1942, 1950, 1953, 1969
Apr–Dec 2019
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, 1966
Mar–Dec 2019
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: 1966, 1974, 1987, 1995
Feb–Dec 2019
11-Month		46.0°F
(7.8°C)		45.5°F
(7.5°C)		0.5°F
(0.3°C)		79th Coolest
Coolest since:
1912
50th Warmest
Warmest since:
2017
Ties: 1901
Jan–Dec 2019
12-Month		44.0°F
(6.7°C)		43.4°F
(6.3°C)		0.6°F
(0.4°C)		80th Coolest
Coolest since:
1895, 1912
49th Warmest
Warmest since:
2012
Ties: 1901, 1907, 1926, 1972, 1997
Jul 2018–Dec 2019
18-Month		46.0°F
(7.8°C)		45.0°F
(7.2°C)		1.0°F
(0.6°C)		94th Coolest
Coolest since:
1912
34th Warmest
Warmest since:
1934
Ties: 1978, 1980, 1986, 1992, 1994, 2008, 2011
Jan 2018–Dec 2019
24-Month		45.3°F
(7.4°C)		43.4°F
(6.3°C)		1.9°F
(1.1°C)		109th Coolest
Coolest since:
1913
19th Warmest
Warmest since:
2018
Jan 2017–Dec 2019
36-Month		45.9°F
(7.7°C)		43.4°F
(6.3°C)		2.5°F
(1.4°C)		122nd Coolest
Coolest since:
1899, 1913
5th Warmest
Warmest since:
2017
Ties: 2001
Jan 2016–Dec 2019
48-Month		46.0°F
(7.8°C)		43.4°F
(6.3°C)		2.6°F
(1.5°C)		123rd Coolest
Coolest since:
1898
3rd Warmest
Warmest since:
2018
Ties: 2015
Jan 2015–Dec 2019
60-Month		46.1°F
(7.8°C)		43.4°F
(6.3°C)		2.7°F
(1.5°C)		123rd Coolest
Coolest since:
1899
2nd Warmest
Warmest since:
2018
Ties: 2021

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