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 1987

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
December 1987
1-Month 		21.9°F
(-5.6°C)		 23.0°F
(-5.0°C)		 -1.1°F
(-0.6°C)		 43rd Coolest
Coolest since:
 1909
86th Warmest
Warmest since:
 1980
Nov–Dec 1987
2-Month 		27.3°F
(-2.6°C)		 27.5°F
(-2.5°C)		 -0.2°F
(-0.1°C)		 55th Coolest
Coolest since:
 1895
74th Warmest
Warmest since:
 2017
Ties: 1974, 2018
Oct–Dec 1987
3-Month 		34.5°F
(1.4°C)		 33.5°F
(0.8°C)		 1.0°F
(0.6°C)		 86th Coolest
Coolest since:
 1898
43rd Warmest
Warmest since:
 1950, 2017
Ties: 1941, 1973
Sep–Dec 1987
4-Month 		40.2°F
(4.6°C)		 39.2°F
(4.0°C)		 1.0°F
(0.6°C)		 86th Coolest
Coolest since:
 1898, 1912
43rd Warmest
Warmest since:
 2021
Ties: 1960, 2004, 2018
Aug–Dec 1987
5-Month 		44.8°F
(7.1°C)		 44.3°F
(6.8°C)		 0.5°F
(0.3°C)		 74th Coolest
Coolest since:
 1912
55th Warmest
Warmest since:
 2021
Ties: 1973, 2000
Jul–Dec 1987
6-Month 		48.3°F
(9.1°C)		 48.1°F
(8.9°C)		 0.2°F
(0.2°C)		 59th Coolest
Coolest since:
 1912
70th Warmest
Warmest since:
 2021
Ties: 1967, 1973, 1976, 1997
Jun–Dec 1987
7-Month 		50.4°F
(10.2°C)		 49.9°F
(9.9°C)		 0.5°F
(0.3°C)		 71st Coolest
Coolest since:
 1912
58th Warmest
Warmest since:
 2021
Ties: 1935
May–Dec 1987
8-Month 		50.7°F
(10.4°C)		 50.0°F
(10.0°C)		 0.7°F
(0.4°C)		 83rd Coolest
Coolest since:
 1912
46th Warmest
Warmest since:
 2021
Ties: 1943, 1959, 2011
Apr–Dec 1987
9-Month 		50.1°F
(10.1°C)		 49.1°F
(9.5°C)		 1.0°F
(0.6°C)		 90th Coolest
Coolest since:
 1912
39th Warmest
Warmest since:
 2021
Ties: 1960, 1990, 2013
Mar–Dec 1987
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, 1995, 2019
Feb–Dec 1987
11-Month 		46.5°F
(8.1°C)		 45.5°F
(7.5°C)		 1.0°F
(0.6°C)		 88th Coolest
Coolest since:
 1912
41st Warmest
Warmest since:
 2017
Jan–Dec 1987
12-Month 		44.4°F
(6.9°C)		 43.4°F
(6.3°C)		 1.0°F
(0.6°C)		 87th Coolest
Coolest since:
 1895, 1912
42nd Warmest
Warmest since:
 2012
Jul 1986–Dec 1987
18-Month 		45.5°F
(7.5°C)		 45.0°F
(7.2°C)		 0.5°F
(0.3°C)		 78th Coolest
Coolest since:
 1912
50th Warmest
Warmest since:
 1934
Ties: 1953
Jan 1986–Dec 1987
24-Month 		44.8°F
(7.1°C)		 43.4°F
(6.3°C)		 1.4°F
(0.8°C)		 100th Coolest
Coolest since:
 1913
28th Warmest
Warmest since:
 2018
Ties: 1990
Jan 1985–Dec 1987
36-Month 		44.3°F
(6.8°C)		 43.4°F
(6.3°C)		 0.9°F
(0.5°C)		 90th Coolest
Coolest since:
 1899, 1913
37th Warmest
Warmest since:
 2017
Ties: 1940, 1960, 1983, 2010, 2011
Jan 1984–Dec 1987
48-Month 		43.8°F
(6.6°C)		 43.4°F
(6.3°C)		 0.4°F
(0.3°C)		 74th Coolest
Coolest since:
 1898
52nd Warmest
Warmest since:
 2018
Ties: 1939, 1942, 1954, 1962, 1979, 1984
Jan 1983–Dec 1987
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, 1957

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