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 1956

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
December 1956
1-Month		21.5°F
(-5.8°C)		23.0°F
(-5.0°C)		-1.5°F
(-0.8°C)		39th Coolest
Coolest since:
1909
90th Warmest
Warmest since:
1980
Nov–Dec 1956
2-Month		24.5°F
(-4.2°C)		27.5°F
(-2.5°C)		-3.0°F
(-1.7°C)		18th Coolest
Coolest since:
1895
111th Warmest
Warmest since:
2017
Ties: 1948
Oct–Dec 1956
3-Month		31.8°F
(-0.1°C)		33.5°F
(0.8°C)		-1.7°F
(-0.9°C)		24th Coolest
Coolest since:
1898
105th Warmest
Warmest since:
1950, 2017
Ties: 1978
Sep–Dec 1956
4-Month		38.6°F
(3.7°C)		39.2°F
(4.0°C)		-0.6°F
(-0.3°C)		38th Coolest
Coolest since:
1898, 1912
91st Warmest
Warmest since:
2021
Ties: 1914, 1927
Aug–Dec 1956
5-Month		43.4°F
(6.3°C)		44.3°F
(6.8°C)		-0.9°F
(-0.5°C)		31st Coolest
Coolest since:
1912
98th Warmest
Warmest since:
2021
Ties: 1903
Jul–Dec 1956
6-Month		47.2°F
(8.4°C)		48.1°F
(8.9°C)		-0.9°F
(-0.5°C)		30th Coolest
Coolest since:
1912
99th Warmest
Warmest since:
2021
Ties: 1978
Jun–Dec 1956
7-Month		49.6°F
(9.8°C)		49.9°F
(9.9°C)		-0.3°F
(-0.1°C)		49th Coolest
Coolest since:
1912
80th Warmest
Warmest since:
2021
Ties: 1931, 1964, 1967
May–Dec 1956
8-Month		50.1°F
(10.1°C)		50.0°F
(10.0°C)		0.1°F
(0.1°C)		56th Coolest
Coolest since:
1912
73rd Warmest
Warmest since:
2021
Ties: 1900, 1917, 1944, 1979, 1986
Apr–Dec 1956
9-Month		49.2°F
(9.6°C)		49.1°F
(9.5°C)		0.1°F
(0.1°C)		58th Coolest
Coolest since:
1912
71st Warmest
Warmest since:
2021
Ties: 1925, 1979, 1991, 1997, 2009
Mar–Dec 1956
10-Month		47.5°F
(8.6°C)		47.5°F
(8.6°C)		0.0°F
(0.0°C)		58th Coolest
Coolest since:
1912
71st Warmest
Warmest since:
2012
Ties: 1942, 1969, 1978, 1991
Feb–Dec 1956
11-Month		45.1°F
(7.3°C)		45.5°F
(7.5°C)		-0.4°F
(-0.2°C)		46th Coolest
Coolest since:
1912
83rd Warmest
Warmest since:
2017
Ties: 1957, 1970, 1979
Jan–Dec 1956
12-Month		43.7°F
(6.5°C)		43.4°F
(6.3°C)		0.3°F
(0.2°C)		68th Coolest
Coolest since:
1895, 1912
61st Warmest
Warmest since:
2012
Ties: 1938, 1947, 1950, 1960, 2008
Jul 1955–Dec 1956
18-Month		45.6°F
(7.6°C)		45.0°F
(7.2°C)		0.6°F
(0.4°C)		79th Coolest
Coolest since:
1912
49th Warmest
Warmest since:
1934
Jan 1955–Dec 1956
24-Month		43.0°F
(6.1°C)		43.4°F
(6.3°C)		-0.4°F
(-0.2°C)		39th Coolest
Coolest since:
1913
89th Warmest
Warmest since:
2018
Ties: 1900, 1984
Jan 1954–Dec 1956
36-Month		43.9°F
(6.6°C)		43.4°F
(6.3°C)		0.5°F
(0.3°C)		77th Coolest
Coolest since:
1899, 1913
50th Warmest
Warmest since:
2017
Ties: 1958
Jan 1953–Dec 1956
48-Month		44.0°F
(6.7°C)		43.4°F
(6.3°C)		0.6°F
(0.4°C)		83rd Coolest
Coolest since:
1898
43rd Warmest
Warmest since:
2018
Ties: 1935, 1943, 1959, 1960, 1963, 1993
Jan 1952–Dec 1956
60-Month		43.7°F
(6.5°C)		43.4°F
(6.3°C)		0.3°F
(0.2°C)		68th Coolest
Coolest since:
1899
57th Warmest
Warmest since:
2018
Ties: 1944, 1947, 1954, 1959, 1985

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