Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. 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 2017

View Period (Months):
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  • Record Warmest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
December 2017
1-Month 		29.2°F
(-1.6°C)		 23.0°F
(-5.0°C)		 6.2°F
(3.4°C)		 124th Coolest
Coolest since:
 1909
5th Warmest
Warmest since:
 1980
Ties: 1950
Nov–Dec 2017
2-Month 		34.6°F
(1.4°C)		 27.5°F
(-2.5°C)		 7.1°F
(3.9°C)		 128th Coolest
Coolest since:
 1895
1st Warmest
Warmest to Date
 2017
Oct–Dec 2017
3-Month 		38.1°F
(3.4°C)		 33.5°F
(0.8°C)		 4.6°F
(2.6°C)		 128th Coolest
Coolest since:
 1898
1st Warmest
Warmest since:
 1950, 2017
Ties: 1950
Sep–Dec 2017
4-Month 		43.1°F
(6.2°C)		 39.2°F
(4.0°C)		 3.9°F
(2.2°C)		 127th Coolest
Coolest since:
 1898, 1912
2nd Warmest
Warmest to Date
 2021
Aug–Dec 2017
5-Month 		47.7°F
(8.7°C)		 44.3°F
(6.8°C)		 3.4°F
(1.9°C)		 127th Coolest
Coolest since:
 1912
2nd Warmest
Warmest to Date
 2021
Jul–Dec 2017
6-Month 		51.4°F
(10.8°C)		 48.1°F
(8.9°C)		 3.3°F
(1.9°C)		 127th Coolest
Coolest since:
 1912
2nd Warmest
Warmest to Date
 2021
Jun–Dec 2017
7-Month 		53.4°F
(11.9°C)		 49.8°F
(9.9°C)		 3.6°F
(2.0°C)		 127th Coolest
Coolest since:
 1912
2nd Warmest
Warmest to Date
 2021
May–Dec 2017
8-Month 		53.2°F
(11.8°C)		 50.0°F
(10.0°C)		 3.2°F
(1.8°C)		 126th Coolest
Coolest since:
 1912
3rd Warmest
Warmest since:
 2021
Apr–Dec 2017
9-Month 		52.1°F
(11.2°C)		 49.1°F
(9.5°C)		 3.0°F
(1.7°C)		 126th Coolest
Coolest since:
 1912
3rd Warmest
Warmest since:
 2021
Mar–Dec 2017
10-Month 		51.0°F
(10.6°C)		 47.5°F
(8.6°C)		 3.5°F
(2.0°C)		 127th Coolest
Coolest since:
 1912
2nd Warmest
Warmest since:
 2012
Ties: 2021
Feb–Dec 2017
11-Month 		49.3°F
(9.6°C)		 45.4°F
(7.4°C)		 3.9°F
(2.2°C)		 128th Coolest
Coolest since:
 1912
1st Warmest
Warmest to Date
 2017
Jan–Dec 2017
12-Month 		47.1°F
(8.4°C)		 43.5°F
(6.4°C)		 3.6°F
(2.0°C)		 127th Coolest
Coolest since:
 1895, 1912
2nd Warmest
Warmest since:
 2012
Jul 2016–Dec 2017
18-Month 		48.2°F
(9.0°C)		 45.0°F
(7.2°C)		 3.2°F
(1.8°C)		 126th Coolest
Coolest since:
 1912
2nd Warmest
Warmest since:
 1934
Ties: 2018
Jan 2016–Dec 2017
24-Month 		46.6°F
(8.1°C)		 43.4°F
(6.3°C)		 3.2°F
(1.8°C)		 126th Coolest
Coolest since:
 1913
2nd Warmest
Warmest to Date
 2018
Jan 2015–Dec 2017
36-Month 		46.7°F
(8.2°C)		 43.5°F
(6.4°C)		 3.2°F
(1.8°C)		 126th Coolest
Coolest since:
 1899, 1913
1st Warmest
Warmest to Date
 2017
Jan 2014–Dec 2017
48-Month 		46.5°F
(8.1°C)		 43.4°F
(6.3°C)		 3.1°F
(1.8°C)		 124th Coolest
Coolest since:
 1898
2nd Warmest
Warmest to Date
 2018
Jan 2013–Dec 2017
60-Month 		46.0°F
(7.8°C)		 43.4°F
(6.3°C)		 2.6°F
(1.5°C)		 121st Coolest
Coolest since:
 1899
4th Warmest
Warmest since:
 2018
Ties: 2016, 2020

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