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 1957

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
December 1957
1-Month 		25.6°F
(-3.6°C)		 23.0°F
(-5.0°C)		 2.6°F
(1.4°C)		 100th Coolest
Coolest since:
 1909
29th Warmest
Warmest since:
 1980
Ties: 1922
Nov–Dec 1957
2-Month 		26.7°F
(-2.9°C)		 27.5°F
(-2.5°C)		 -0.8°F
(-0.4°C)		 44th Coolest
Coolest since:
 1895
85th Warmest
Warmest since:
 2017
Ties: 1983
Oct–Dec 1957
3-Month 		32.9°F
(0.5°C)		 33.5°F
(0.8°C)		 -0.6°F
(-0.3°C)		 47th Coolest
Coolest since:
 1898
82nd Warmest
Warmest since:
 1950, 2017
Sep–Dec 1957
4-Month 		38.5°F
(3.6°C)		 39.2°F
(4.0°C)		 -0.7°F
(-0.4°C)		 36th Coolest
Coolest since:
 1898, 1912
93rd Warmest
Warmest since:
 2021
Ties: 1948
Aug–Dec 1957
5-Month 		43.7°F
(6.5°C)		 44.3°F
(6.8°C)		 -0.6°F
(-0.3°C)		 35th Coolest
Coolest since:
 1912
94th Warmest
Warmest since:
 2021
Ties: 1900, 1914, 1948, 1970, 1975, 1984
Jul–Dec 1957
6-Month 		47.5°F
(8.6°C)		 48.1°F
(8.9°C)		 -0.6°F
(-0.3°C)		 36th Coolest
Coolest since:
 1912
93rd Warmest
Warmest since:
 2021
Ties: 1900, 1925, 1948
Jun–Dec 1957
7-Month 		49.2°F
(9.6°C)		 49.9°F
(9.9°C)		 -0.7°F
(-0.3°C)		 36th Coolest
Coolest since:
 1912
93rd Warmest
Warmest since:
 2021
Ties: 1982, 1984
May–Dec 1957
8-Month 		49.1°F
(9.5°C)		 50.0°F
(10.0°C)		 -0.9°F
(-0.5°C)		 25th Coolest
Coolest since:
 1912
104th Warmest
Warmest since:
 2021
Ties: 1902
Apr–Dec 1957
9-Month 		48.1°F
(8.9°C)		 49.1°F
(9.5°C)		 -1.0°F
(-0.6°C)		 24th Coolest
Coolest since:
 1912
105th Warmest
Warmest since:
 2021
Ties: 1970
Mar–Dec 1957
10-Month 		46.7°F
(8.2°C)		 47.5°F
(8.6°C)		 -0.8°F
(-0.4°C)		 31st Coolest
Coolest since:
 1912
98th Warmest
Warmest since:
 2012
Ties: 1896, 1915, 1928, 1948, 1973
Feb–Dec 1957
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: 1956, 1970, 1979
Jan–Dec 1957
12-Month 		43.0°F
(6.1°C)		 43.4°F
(6.3°C)		 -0.4°F
(-0.2°C)		 44th Coolest
Coolest since:
 1895, 1912
85th Warmest
Warmest since:
 2012
Ties: 1902, 1914
Jul 1956–Dec 1957
18-Month 		44.4°F
(6.9°C)		 45.0°F
(7.2°C)		 -0.6°F
(-0.3°C)		 31st Coolest
Coolest since:
 1912
97th Warmest
Warmest since:
 1934
Ties: 1928, 1933, 1971, 1984, 1993
Jan 1956–Dec 1957
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, 1910, 1964, 1972
Jan 1955–Dec 1957
36-Month 		43.0°F
(6.1°C)		 43.4°F
(6.3°C)		 -0.4°F
(-0.2°C)		 37th Coolest
Coolest since:
 1899, 1913
90th Warmest
Warmest since:
 2017
Ties: 1907, 1922, 1923, 1926, 1950, 1970, 1974
Jan 1954–Dec 1957
48-Month 		43.7°F
(6.5°C)		 43.4°F
(6.3°C)		 0.3°F
(0.2°C)		 67th Coolest
Coolest since:
 1898
59th Warmest
Warmest since:
 2018
Ties: 1938, 1946, 1955, 1978
Jan 1953–Dec 1957
60-Month 		43.8°F
(6.6°C)		 43.4°F
(6.3°C)		 0.4°F
(0.3°C)		 74th Coolest
Coolest since:
 1899
51st Warmest
Warmest since:
 2018
Ties: 1935, 1939, 1941, 1942, 1987

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