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 2021

View Period (Months):
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  • Record Coolest
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  • Bottom 1/3
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  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Warmest/Coolest
Since
Record
December 2021
1-Month
28.3°F
(-2.1°C)
23.0°F
(-5.0°C)
5.3°F
(2.9°C)
116th Coolest
Coolest since:
1909
12th Warmest
Warmest since:
1980
Ties: 1995
Nov–Dec 2021
2-Month
33.8°F
(1.0°C)
27.5°F
(-2.5°C)
6.3°F
(3.5°C)
126th Coolest
Coolest since:
1895
2nd Warmest
Warmest since:
2017
Oct–Dec 2021
3-Month
37.6°F
(3.1°C)
33.5°F
(0.8°C)
4.1°F
(2.3°C)
125th Coolest
Coolest since:
1898
3rd Warmest
Warmest since:
1950, 2017
Ties: 1933
Sep–Dec 2021
4-Month
43.4°F
(6.3°C)
39.3°F
(4.1°C)
4.1°F
(2.2°C)
127th Coolest
Coolest since:
1898, 1912
1st Warmest
Warmest to Date
2021
Aug–Dec 2021
5-Month
48.0°F
(8.9°C)
44.3°F
(6.8°C)
3.7°F
(2.1°C)
127th Coolest
Coolest since:
1912
1st Warmest
Warmest to Date
2021
Jul–Dec 2021
6-Month
51.9°F
(11.1°C)
48.1°F
(8.9°C)
3.8°F
(2.2°C)
127th Coolest
Coolest since:
1912
1st Warmest
Warmest to Date
2021
Jun–Dec 2021
7-Month
54.1°F
(12.3°C)
49.8°F
(9.9°C)
4.3°F
(2.4°C)
127th Coolest
Coolest since:
1912
1st Warmest
Warmest to Date
2021
May–Dec 2021
8-Month
54.0°F
(12.2°C)
50.0°F
(10.0°C)
4.0°F
(2.2°C)
127th Coolest
Coolest since:
1912
1st Warmest
Warmest to Date
2021
Apr–Dec 2021
9-Month
52.8°F
(11.6°C)
49.0°F
(9.4°C)
3.8°F
(2.2°C)
127th Coolest
Coolest since:
1912
1st Warmest
Warmest to Date
2021
Mar–Dec 2021
10-Month
51.0°F
(10.6°C)
47.4°F
(8.6°C)
3.6°F
(2.0°C)
126th Coolest
Coolest since:
1912
2nd Warmest
Warmest since:
2012
Ties: 2017
Feb–Dec 2021
11-Month
48.8°F
(9.3°C)
45.5°F
(7.5°C)
3.3°F
(1.8°C)
124th Coolest
Coolest since:
1912
4th Warmest
Warmest since:
2017
Jan–Dec 2021
12-Month
46.7°F
(8.2°C)
43.4°F
(6.3°C)
3.3°F
(1.9°C)
124th Coolest
Coolest since:
1895, 1912
4th Warmest
Warmest since:
2012
Ties: 2015
Jul 2020–Dec 2021
18-Month
48.1°F
(8.9°C)
45.0°F
(7.2°C)
3.1°F
(1.7°C)
123rd Coolest
Coolest since:
1912
4th Warmest
Warmest since:
1934
Jan 2020–Dec 2021
24-Month
46.4°F
(8.0°C)
43.5°F
(6.4°C)
2.9°F
(1.6°C)
124th Coolest
Coolest since:
1913
3rd Warmest
Warmest since:
2018
Ties: 2015, 2016
Jan 2019–Dec 2021
36-Month
45.6°F
(7.6°C)
43.4°F
(6.3°C)
2.2°F
(1.3°C)
117th Coolest
Coolest since:
1899, 1913
9th Warmest
Warmest since:
2017
Ties: 2005, 2007, 2015
Jan 2018–Dec 2021
48-Month
45.8°F
(7.7°C)
43.4°F
(6.3°C)
2.4°F
(1.4°C)
118th Coolest
Coolest since:
1898
7th Warmest
Warmest since:
2018
Jan 2017–Dec 2021
60-Month
46.1°F
(7.8°C)
43.4°F
(6.3°C)
2.7°F
(1.5°C)
122nd Coolest
Coolest since:
1899
2nd Warmest
Warmest since:
2018
Ties: 2019

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