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 1999

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
December 1999
1-Month 		27.9°F
(-2.3°C)		 25.2°F
(-3.8°C)		 2.7°F
(1.5°C)		 102nd Coolest
Coolest since:
 1909
27th Warmest
Warmest since:
 1980
Ties: 2014
Nov–Dec 1999
2-Month 		34.6°F
(1.4°C)		 29.4°F
(-1.4°C)		 5.2°F
(2.8°C)		 125th Coolest
Coolest since:
 1972
4th Warmest
Warmest since:
 2021
Oct–Dec 1999
3-Month 		39.0°F
(3.9°C)		 35.1°F
(1.7°C)		 3.9°F
(2.2°C)		 123rd Coolest
Coolest since:
 1898
6th Warmest
Warmest since:
 2021
Sep–Dec 1999
4-Month 		43.1°F
(6.2°C)		 40.7°F
(4.8°C)		 2.4°F
(1.4°C)		 113th Coolest
Coolest since:
 1898
16th Warmest
Warmest since:
 2021
Ties: 1981, 2001
Aug–Dec 1999
5-Month 		47.6°F
(8.7°C)		 45.6°F
(7.6°C)		 2.0°F
(1.1°C)		 112th Coolest
Coolest since:
 1898
17th Warmest
Warmest since:
 2021
Ties: 1921, 1962, 2003
Jul–Dec 1999
6-Month 		51.1°F
(10.6°C)		 49.1°F
(9.5°C)		 2.0°F
(1.1°C)		 111th Coolest
Coolest since:
 1898, 1912
18th Warmest
Warmest since:
 2021
Ties: 1934, 1977
Jun–Dec 1999
7-Month 		52.4°F
(11.3°C)		 50.9°F
(10.5°C)		 1.5°F
(0.8°C)		 103rd Coolest
Coolest since:
 1912
26th Warmest
Warmest since:
 2021
Ties: 1958, 2011, 2014
May–Dec 1999
8-Month 		52.2°F
(11.2°C)		 51.0°F
(10.6°C)		 1.2°F
(0.6°C)		 95th Coolest
Coolest since:
 1912
34th Warmest
Warmest since:
 2021
Ties: 1921, 1962, 2000, 2013
Apr–Dec 1999
9-Month 		50.8°F
(10.4°C)		 50.0°F
(10.0°C)		 0.8°F
(0.4°C)		 88th Coolest
Coolest since:
 1912
41st Warmest
Warmest since:
 2021
Ties: 1921, 1949, 1960, 1966, 2008, 2013
Mar–Dec 1999
10-Month 		49.7°F
(9.8°C)		 48.4°F
(9.1°C)		 1.3°F
(0.7°C)		 99th Coolest
Coolest since:
 1912
30th Warmest
Warmest since:
 2012
Ties: 1989, 1998, 2011
Feb–Dec 1999
11-Month 		48.2°F
(9.0°C)		 46.5°F
(8.1°C)		 1.7°F
(0.9°C)		 110th Coolest
Coolest since:
 1912
19th Warmest
Warmest since:
 2012, 2017
Ties: 1910
Jan–Dec 1999
12-Month 		46.6°F
(8.1°C)		 44.6°F
(7.0°C)		 2.0°F
(1.1°C)		 114th Coolest
Coolest since:
 1912
15th Warmest
Warmest since:
 2012
Jul 1998–Dec 1999
18-Month 		48.3°F
(9.1°C)		 46.1°F
(7.8°C)		 2.2°F
(1.3°C)		 116th Coolest
Coolest since:
 1912
12th Warmest
Warmest since:
 1934
Ties: 1954
Jan 1998–Dec 1999
24-Month 		46.4°F
(8.0°C)		 44.6°F
(7.0°C)		 1.8°F
(1.0°C)		 111th Coolest
Coolest since:
 1913
17th Warmest
Warmest since:
 2017
Ties: 2004
Jan 1997–Dec 1999
36-Month 		45.9°F
(7.7°C)		 44.6°F
(7.0°C)		 1.3°F
(0.7°C)		 104th Coolest
Coolest since:
 1913, 1914
23rd Warmest
Warmest since:
 2017
Ties: 2008
Jan 1996–Dec 1999
48-Month 		45.9°F
(7.7°C)		 44.6°F
(7.0°C)		 1.3°F
(0.7°C)		 104th Coolest
Coolest since:
 1915
22nd Warmest
Warmest since:
 2018
Jan 1995–Dec 1999
60-Month 		45.8°F
(7.7°C)		 44.6°F
(7.0°C)		 1.2°F
(0.7°C)		 103rd Coolest
Coolest since:
 1916
22nd Warmest
Warmest since:
 2018
Ties: 1998, 2010

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