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 1958

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
December 1958
1-Month		29.8°F
(-1.2°C)		23.0°F
(-5.0°C)		6.8°F
(3.8°C)		125th Coolest
Coolest since:
1909
4th Warmest
Warmest since:
1980
Nov–Dec 1958
2-Month		31.4°F
(-0.3°C)		27.5°F
(-2.5°C)		3.9°F
(2.2°C)		116th Coolest
Coolest since:
1895
13th Warmest
Warmest since:
2017
Ties: 1962
Oct–Dec 1958
3-Month		36.6°F
(2.6°C)		33.5°F
(0.8°C)		3.1°F
(1.8°C)		113th Coolest
Coolest since:
1898
16th Warmest
Warmest since:
1950, 2017
Sep–Dec 1958
4-Month		41.9°F
(5.5°C)		39.2°F
(4.0°C)		2.7°F
(1.5°C)		113th Coolest
Coolest since:
1898, 1912
16th Warmest
Warmest since:
2021
Ties: 1999
Aug–Dec 1958
5-Month		47.0°F
(8.3°C)		44.3°F
(6.8°C)		2.7°F
(1.5°C)		122nd Coolest
Coolest since:
1912
7th Warmest
Warmest since:
2021
Jul–Dec 1958
6-Month		50.1°F
(10.1°C)		48.1°F
(8.9°C)		2.0°F
(1.2°C)		110th Coolest
Coolest since:
1912
19th Warmest
Warmest since:
2021
Ties: 2022
Jun–Dec 1958
7-Month		51.9°F
(11.1°C)		49.9°F
(9.9°C)		2.0°F
(1.2°C)		112th Coolest
Coolest since:
1912
17th Warmest
Warmest since:
2021
Ties: 1980
May–Dec 1958
8-Month		52.3°F
(11.3°C)		50.0°F
(10.0°C)		2.3°F
(1.3°C)		119th Coolest
Coolest since:
1912
10th Warmest
Warmest to Date
2021
Apr–Dec 1958
9-Month		50.8°F
(10.4°C)		49.1°F
(9.5°C)		1.7°F
(0.9°C)		106th Coolest
Coolest since:
1912
23rd Warmest
Warmest since:
2021
Ties: 1910, 1954, 2006
Mar–Dec 1958
10-Month		48.7°F
(9.3°C)		47.5°F
(8.6°C)		1.2°F
(0.7°C)		97th Coolest
Coolest since:
1912
32nd Warmest
Warmest since:
2012
Ties: 1933, 1936, 1992, 1999, 2013
Feb–Dec 1958
11-Month		47.1°F
(8.4°C)		45.5°F
(7.5°C)		1.6°F
(0.9°C)		108th Coolest
Coolest since:
1912
21st Warmest
Warmest since:
2017
Ties: 1910, 1989, 2022
Jan–Dec 1958
12-Month		45.0°F
(7.2°C)		43.4°F
(6.3°C)		1.6°F
(0.9°C)		103rd Coolest
Coolest since:
1895, 1912
26th Warmest
Warmest since:
2012
Ties: 1998
Jul 1957–Dec 1958
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, 1988, 2010
Jan 1957–Dec 1958
24-Month		44.0°F
(6.7°C)		43.4°F
(6.3°C)		0.6°F
(0.4°C)		78th Coolest
Coolest since:
1913
50th Warmest
Warmest since:
2018
Ties: 1947, 1955, 1960
Jan 1956–Dec 1958
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: 1956
Jan 1955–Dec 1958
48-Month		43.5°F
(6.4°C)		43.4°F
(6.3°C)		0.1°F
(0.1°C)		58th Coolest
Coolest since:
1898
68th Warmest
Warmest since:
2018
Ties: 1964, 1972, 1977
Jan 1954–Dec 1958
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: 1960, 1961, 1988

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