Upper Colorado River Basin December 1899 Average Temperature Rankings
1901-2000
Degrees Fahrenheit
1
18.0
23.0
-5.0
19
111
1909
1980
1898
1896
bottom-third
1913,2009
2
26.2
27.5
-1.3
38
92
1895
2017
1898
1896
bottom-third
1964
3
31.4
33.5
-2.1
18
112
1898
1950,2017
1898
1897
bottom-third
4
37.8
39.2
-1.4
22
108
1898,1912
2021
1898
1897
bottom-third
1970
5
42.5
44.3
-1.8
15
115
1912
2021
1898
1897
bottom-third
1909,1932
6
46.5
48.1
-1.6
14
116
1912
2021
1898
1897
bottom-third
1971
7
48.3
49.9
-1.6
9
121
1912
2021
1898
1897
bottom-tenth
1905,1924,1928,1932,1951,1993
8
48.3
50.0
-1.7
9
121
1912
2021
1898
1897
bottom-tenth
9
47.7
49.1
-1.4
11
119
1912
2021
1898
1898
bottom-tenth
1898,1903,1924
10
46.1
47.5
-1.4
14
116
1912
2012
1898
1897
bottom-third
1932
11
43.7
45.5
-1.8
7
123
1912
2017
1895
1898
bottom-tenth
1916,1920
12
41.8
43.4
-1.6
10
120
1895,1912
2012
1898
1897
bottom-tenth
1920,1924,1932,1973
18
43.1
45.0
-1.9
5
124
1912
1934
1898
1898
bottom-tenth
1898,1909
24
41.5
43.4
-1.9
2
127
1913
2018
1899
1898
bottom-tenth
36
41.7
43.4
-1.7
1
127
1899,1913
2017
1899
1898
lowest
1913
48
42.0
43.4
-1.4
3
124
1898
2018
1898
1899
bottom-tenth
1914
60
41.7
43.4
-1.7
1
125
1899
2018
1899
1899
lowest