Upper Colorado River Basin April 1989 Average Temperature Rankings
1901-2000
Degrees Fahrenheit
1
47.2
41.7
5.5
127
3
1920
1992
1988
1943
top-tenth
2
42.9
37.3
5.6
126
4
1917
1934,1992
1988
1934
top-tenth
2004
3
35.8
33.4
2.4
105
25
1903
1934
1988
1986
top-third
1978,1996
4
31.6
30.3
1.3
89
41
1917
1934
1988
1987
top-third
1926,1961,1967,1983
5
29.8
28.8
1.0
82
47
1917
1934
1988
1987
normal
1961,1980,2011
6
30.2
29.4
0.8
76
53
1917
1934
1988
1987
normal
1950,1956
7
33.2
31.7
1.5
96
33
1917
1934
1988
1986
top-third
8
36.0
34.8
1.2
92
37
1917
1934
1988
1986
top-third
2020
9
39.4
38.1
1.3
95
34
1917
1934
1988
1986
top-third
2001,2007,2013
10
42.4
41.0
1.4
93
36
1917
1934
1988
1986
top-third
2013,2019
11
44.5
42.7
1.8
106
23
1917
1934
1988
1986
top-third
1940,1959,1986,2005,2007,2019
12
45.1
43.4
1.7
99
30
1917
1934,2015,2018
1988
1986
top-third
2006
18
39.7
38.7
1.0
90
38
1913
2018
1988
1987
top-third
1934,1998
24
44.4
43.4
1.0
90
38
1913
2018
1988
1987
top-third
1936,1960
36
44.3
43.4
0.9
89
38
1914
2017,2018,2019
1988
1988
top-third
1940,1988
48
44.5
43.4
1.1
97
29
1899,1915
2018
1988
1983
top-third
1983,1990,1991,1995,1996,2011
60
44.2
43.4
0.8
87
38
1917
2018,2019
1988
1982
top-third