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 1988

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
December 1988
1-Month		22.6°F
(-5.2°C)		23.0°F
(-5.0°C)		-0.4°F
(-0.2°C)		52nd Coolest
Coolest since:
1909
77th Warmest
Warmest since:
1980
Nov–Dec 1988
2-Month		27.5°F
(-2.5°C)		27.5°F
(-2.5°C)		0.0°F
(0.0°C)		59th Coolest
Coolest since:
1895
70th Warmest
Warmest since:
2017
Ties: 1997
Oct–Dec 1988
3-Month		35.4°F
(1.9°C)		33.5°F
(0.8°C)		1.9°F
(1.1°C)		100th Coolest
Coolest since:
1898
29th Warmest
Warmest since:
1950, 2017
Sep–Dec 1988
4-Month		40.4°F
(4.7°C)		39.2°F
(4.0°C)		1.2°F
(0.7°C)		92nd Coolest
Coolest since:
1898, 1912
37th Warmest
Warmest since:
2021
Ties: 1955, 1965, 2022
Aug–Dec 1988
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, 2018, 2019
Jul–Dec 1988
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 since:
2021
Ties: 1910, 1917, 1921
Jun–Dec 1988
7-Month		51.8°F
(11.0°C)		49.9°F
(9.9°C)		1.9°F
(1.1°C)		110th Coolest
Coolest since:
1912
19th Warmest
Warmest since:
2021
Ties: 1963
May–Dec 1988
8-Month		51.8°F
(11.0°C)		50.0°F
(10.0°C)		1.8°F
(1.0°C)		111th Coolest
Coolest since:
1912
18th Warmest
Warmest since:
2021
Ties: 1939, 1981, 2002
Apr–Dec 1988
9-Month		50.9°F
(10.5°C)		49.1°F
(9.5°C)		1.8°F
(1.0°C)		111th Coolest
Coolest since:
1912
18th Warmest
Warmest since:
2021
Ties: 1963, 1989, 2015, 2022
Mar–Dec 1988
10-Month		49.0°F
(9.4°C)		47.5°F
(8.6°C)		1.5°F
(0.8°C)		104th Coolest
Coolest since:
1912
25th Warmest
Warmest since:
2012
Ties: 1963, 1996
Feb–Dec 1988
11-Month		46.9°F
(8.3°C)		45.5°F
(7.5°C)		1.4°F
(0.8°C)		98th Coolest
Coolest since:
1912
31st Warmest
Warmest since:
2017
Ties: 1992
Jan–Dec 1988
12-Month		44.5°F
(6.9°C)		43.4°F
(6.3°C)		1.1°F
(0.6°C)		89th Coolest
Coolest since:
1895, 1912
40th Warmest
Warmest since:
2012
Ties: 2009
Jul 1987–Dec 1988
18-Month		45.8°F
(7.7°C)		45.0°F
(7.2°C)		0.8°F
(0.5°C)		84th Coolest
Coolest since:
1912
44th Warmest
Warmest since:
1934
Ties: 1938, 1958, 2010
Jan 1987–Dec 1988
24-Month		44.5°F
(6.9°C)		43.4°F
(6.3°C)		1.1°F
(0.6°C)		91st Coolest
Coolest since:
1913
37th Warmest
Warmest since:
2018
Ties: 1977, 1998
Jan 1986–Dec 1988
36-Month		44.7°F
(7.1°C)		43.4°F
(6.3°C)		1.3°F
(0.8°C)		101st Coolest
Coolest since:
1899, 1913
26th Warmest
Warmest since:
2017
Ties: 1935, 1982, 1990, 1998
Jan 1985–Dec 1988
48-Month		44.3°F
(6.8°C)		43.4°F
(6.3°C)		0.9°F
(0.5°C)		91st Coolest
Coolest since:
1898
35th Warmest
Warmest since:
2018
Ties: 1981
Jan 1984–Dec 1988
60-Month		43.9°F
(6.6°C)		43.4°F
(6.3°C)		0.5°F
(0.3°C)		78th Coolest
Coolest since:
1899
47th Warmest
Warmest since:
2018
Ties: 1958, 1960, 1961

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