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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  • Top 1/10
  • 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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