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 1898

View Period (Months):
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
December 1898
1-Month
14.7°F
(-9.6°C)
23.0°F
(-5.0°C)
-8.3°F
(-4.6°C)
2nd Coolest
Coolest since:
1909
127th Warmest
Warmest since:
1980
Nov–Dec 1898
2-Month
22.0°F
(-5.6°C)
27.5°F
(-2.5°C)
-5.5°F
(-3.1°C)
2nd Coolest
Coolest since:
1895
127th Warmest
Warmest since:
2017
Ties: 1931
Oct–Dec 1898
3-Month
28.5°F
(-1.9°C)
33.5°F
(0.8°C)
-5.0°F
(-2.7°C)
1st Coolest
Coolest since:
1898
128th Warmest
Warmest since:
1950, 2017
Sep–Dec 1898
4-Month
35.2°F
(1.8°C)
39.3°F
(4.1°C)
-4.1°F
(-2.3°C)
1st Coolest
Coolest since:
1898, 1912
128th Warmest
Warmest since:
2021
Ties: 1912
Aug–Dec 1898
5-Month
41.5°F
(5.3°C)
44.4°F
(6.9°C)
-2.9°F
(-1.6°C)
6th Coolest
Coolest since:
1912
123rd Warmest
Warmest since:
2021
Jul–Dec 1898
6-Month
45.8°F
(7.7°C)
48.1°F
(8.9°C)
-2.3°F
(-1.2°C)
6th Coolest
Coolest since:
1912
123rd Warmest
Warmest since:
2021
Jun–Dec 1898
7-Month
48.0°F
(8.9°C)
49.9°F
(9.9°C)
-1.9°F
(-1.0°C)
6th Coolest
Coolest since:
1912
123rd Warmest
Warmest since:
2021
May–Dec 1898
8-Month
48.1°F
(8.9°C)
50.0°F
(10.0°C)
-1.9°F
(-1.1°C)
6th Coolest
Coolest since:
1912
123rd Warmest
Warmest since:
2021
Apr–Dec 1898
9-Month
47.7°F
(8.7°C)
49.1°F
(9.5°C)
-1.4°F
(-0.8°C)
11th Coolest
Coolest since:
1912
118th Warmest
Warmest since:
2021
Ties: 1899, 1903, 1924
Mar–Dec 1898
10-Month
45.8°F
(7.7°C)
47.5°F
(8.6°C)
-1.7°F
(-0.9°C)
8th Coolest
Coolest since:
1912
121st Warmest
Warmest since:
2012
Ties: 1923, 1975
Feb–Dec 1898
11-Month
43.8°F
(6.6°C)
45.5°F
(7.5°C)
-1.7°F
(-0.9°C)
10th Coolest
Coolest since:
1912
119th Warmest
Warmest since:
2017
Ties: 1929
Jan–Dec 1898
12-Month
41.2°F
(5.1°C)
43.4°F
(6.3°C)
-2.2°F
(-1.2°C)
4th Coolest
Coolest since:
1895, 1912
125th Warmest
Warmest since:
2012
Ties: 1908
Jul 1897–Dec 1898
18-Month
43.1°F
(6.2°C)
45.0°F
(7.2°C)
-1.9°F
(-1.0°C)
5th Coolest
Coolest since:
1912
123rd Warmest
Warmest since:
1934
Ties: 1899, 1909
Jan 1897–Dec 1898
24-Month
41.7°F
(5.4°C)
43.4°F
(6.3°C)
-1.7°F
(-0.9°C)
6th Coolest
Coolest since:
1913
122nd Warmest
Warmest since:
2018
Jan 1896–Dec 1898
36-Month
42.1°F
(5.6°C)
43.5°F
(6.4°C)
-1.4°F
(-0.8°C)
7th Coolest
Coolest since:
1899, 1913
120th Warmest
Warmest to Date
2017
Ties: 1924
Jan 1895–Dec 1898
48-Month
41.7°F
(5.4°C)
43.4°F
(6.3°C)
-1.7°F
(-0.9°C)
1st Coolest
Coolest since:
1898
125th Warmest
Warmest to Date
2018

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