Statewide Rankings

Statewide Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Colorado

Average Temperature Rankings, December 2009

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  • Record Coolest
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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 2009
1-Month
20.4°F
(-6.4°C)
25.2°F
(-3.8°C)
-4.8°F
(-2.6°C)
13th Coolest
Coolest since:
1909
115th Warmest
Warmest since:
1980
Nov–Dec 2009
2-Month
29.1°F
(-1.6°C)
29.4°F
(-1.4°C)
-0.3°F
(-0.2°C)
52nd Coolest
Coolest since:
1972
76th Warmest
Warmest since:
2021
Oct–Dec 2009
3-Month
33.0°F
(0.6°C)
35.1°F
(1.7°C)
-2.1°F
(-1.1°C)
14th Coolest
Coolest since:
1898
114th Warmest
Warmest since:
2021
Sep–Dec 2009
4-Month
39.2°F
(4.0°C)
40.7°F
(4.8°C)
-1.5°F
(-0.8°C)
22nd Coolest
Coolest since:
1898
106th Warmest
Warmest since:
2021
Ties: 1920
Aug–Dec 2009
5-Month
44.3°F
(6.8°C)
45.6°F
(7.6°C)
-1.3°F
(-0.8°C)
25th Coolest
Coolest since:
1898
103rd Warmest
Warmest since:
2021
Ties: 1992
Jul–Dec 2009
6-Month
48.0°F
(8.9°C)
49.1°F
(9.5°C)
-1.1°F
(-0.6°C)
21st Coolest
Coolest since:
1912
107th Warmest
Warmest since:
2021
Ties: 1905, 1925, 1927, 1951, 1985
Jun–Dec 2009
7-Month
49.7°F
(9.8°C)
50.8°F
(10.4°C)
-1.1°F
(-0.6°C)
17th Coolest
Coolest since:
1912
111th Warmest
Warmest since:
2021
Ties: 1909, 1924, 1927, 1929, 1930
May–Dec 2009
8-Month
50.3°F
(10.2°C)
51.0°F
(10.6°C)
-0.7°F
(-0.4°C)
31st Coolest
Coolest since:
1912
97th Warmest
Warmest since:
2021
Ties: 1904, 1918, 1919, 1945, 1975, 1982
Apr–Dec 2009
9-Month
49.4°F
(9.7°C)
50.0°F
(10.0°C)
-0.6°F
(-0.3°C)
33rd Coolest
Coolest since:
1912
95th Warmest
Warmest since:
2021
Ties: 1906, 1930, 1970
Mar–Dec 2009
10-Month
48.2°F
(9.0°C)
48.4°F
(9.1°C)
-0.2°F
(-0.1°C)
48th Coolest
Coolest since:
1912
80th Warmest
Warmest since:
2012
Ties: 1897, 1902, 1967, 1979
Feb–Dec 2009
11-Month
46.7°F
(8.2°C)
46.5°F
(8.1°C)
0.2°F
(0.1°C)
67th Coolest
Coolest since:
1912
61st Warmest
Warmest since:
2012, 2017
Ties: 1907, 1926, 1974, 1997
Jan–Dec 2009
12-Month
45.2°F
(7.3°C)
44.6°F
(7.0°C)
0.6°F
(0.3°C)
82nd Coolest
Coolest since:
1912
46th Warmest
Warmest since:
2012
Ties: 1935, 1950, 1987
Jul 2008–Dec 2009
18-Month
47.0°F
(8.3°C)
46.1°F
(7.8°C)
0.9°F
(0.5°C)
96th Coolest
Coolest since:
1912
31st Warmest
Warmest since:
1934
Ties: 1938, 1989, 1990, 2008, 2019
Jan 2008–Dec 2009
24-Month
45.1°F
(7.3°C)
44.6°F
(7.0°C)
0.5°F
(0.3°C)
78th Coolest
Coolest since:
1913
49th Warmest
Warmest since:
2017
Ties: 1922, 1959
Jan 2007–Dec 2009
36-Month
45.4°F
(7.4°C)
44.5°F
(6.9°C)
0.9°F
(0.5°C)
94th Coolest
Coolest since:
1913, 1914
32nd Warmest
Warmest since:
2017
Ties: 1981, 1990, 1997, 2010
Jan 2006–Dec 2009
48-Month
45.7°F
(7.6°C)
44.6°F
(7.0°C)
1.1°F
(0.6°C)
103rd Coolest
Coolest since:
1915
22nd Warmest
Warmest since:
2018
Ties: 1937, 1997
Jan 2005–Dec 2009
60-Month
45.9°F
(7.7°C)
44.5°F
(6.9°C)
1.4°F
(0.8°C)
104th Coolest
Coolest since:
1916
20th Warmest
Warmest since:
2018

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