Upper Colorado River Basin December 2019 Average Temperature Rankings
1901-2000
Degrees Fahrenheit
1
24.2
23.0
1.2
81
49
1909
1980
2018
2017
normal
1901,1936,1944
2
29.7
27.5
2.2
102
28
1895
2017
2018
2017
top-third
1906,1946,1989
3
33.0
33.5
-0.5
48
82
1898
1950,2017
2018
2018
normal
1925,1985,2018
4
39.9
39.2
0.7
79
51
1898,1912
2021
2013
2018
normal
1983
5
45.6
44.3
1.3
94
36
1912
2021
2018
2018
top-third
1942,1988,2018
6
49.5
48.1
1.4
96
34
1912
2021
2013
2018
top-third
1950,1989,2011
7
51.0
49.9
1.1
91
39
1912
2021
2009
2018
top-third
1940,1953,1954,2006
8
50.5
50.0
0.5
74
56
1912
2021
2009
2018
normal
1942,1950,1953,1969
9
49.9
49.1
0.8
84
46
1912
2021
2011
2018
normal
1901,1966
10
48.3
47.5
0.8
83
47
1912
2012
2011
2018
normal
1966,1974,1987,1995
11
46.0
45.5
0.5
79
51
1912
2017
2011
2018
normal
1901
12
44.0
43.4
0.6
80
50
1895,1912
2012
2011
2018
normal
1901,1907,1926,1972,1997
18
46.0
45.0
1.0
94
35
1912
1934
2011
2018
top-third
1978,1980,1986,1992,1994,2008,2011
24
45.3
43.4
1.9
110
19
1913
2018
2014
2018
top-third
36
45.9
43.4
2.5
123
5
1899,1913
2017
2015
2018
top-tenth
2001
48
46.0
43.4
2.6
124
3
1898
2018
2016
2018
top-tenth
2015
60
46.1
43.4
2.7
124
2
1899
2018
2017
2018
top-tenth
2021