Upper Colorado River Basin December 2018 Average Temperature Rankings
1901-2000
Degrees Fahrenheit
1
23.3
23.0
0.3
59
71
1909
1980
2015
2017
normal
2
27.3
27.5
-0.2
55
75
1895
2017
2015
2017
normal
1974,1987
3
33.0
33.5
-0.5
48
82
1898
1950,2017
2013
2017
normal
1925,1985,2019
4
40.2
39.2
1.0
86
44
1898,1912
2021
2013
2017
normal
1960,1987,2004
5
45.6
44.3
1.3
94
36
1912
2021
2013
2017
top-third
1942,1988,2019
6
49.9
48.1
1.8
105
25
1912
2021
2015
2017
top-third
1934,2005
7
52.1
49.9
2.2
117
13
1912
2021
2015
2017
top-tenth
2010,2014
8
52.6
50.0
2.6
122
8
1912
2021
2016
2017
top-tenth
2016
9
51.8
49.1
2.7
126
4
1912
2021
2016
2017
top-tenth
2020
10
50.2
47.5
2.7
123
7
1912
2012
2016
2017
top-tenth
2001,2016
11
48.3
45.5
2.8
123
7
1912
2017
2016
2017
top-tenth
2016
12
46.6
43.4
3.2
124
6
1895,1912
2012
2016
2017
top-tenth
18
48.2
45.0
3.2
127
2
1912
1934
2017
2017
top-tenth
2017
24
46.9
43.4
3.5
128
1
1913
2018
2017
2018
highest
36
46.6
43.4
3.2
126
2
1899,1913
2017
2016
2017
top-tenth
48
46.7
43.4
3.3
126
1
1898
2018
2017
2018
highest
60
46.5
43.4
3.1
125
1
1899
2018
2017
2018
highest