Detroit Area Average Monthly Temperatures from 1960 to 1980
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Avg for Year
1960
29.0
27.5
26.3
50.6
58.4
66.9
70.8
71.9
66.9
53.2
43.6
25.2
49.2
1961
23.1
30.8
39.1
43.5
55.8
67.9
73.4
72.2
68.8
56.3
41.3
29.0
50.1
1962
22.3
23.5
35.0
49.6
65.2
69.1
71.0
71.0
61.4
54.6
40.3
25.1
49.0
1963
17.2
18.8
37.6
49.4
57.8
70.8
74.5
70.1
63.1
62.7
46.0
23.8
49.3
1964
30.4
28.9
36.1
49.3
63.7
69.6
76.0
69.1
64.4
51.4
44.9
30.4
51.2
1965
25.5
26.6
30.1
44.9
63.1
67.8
70.4
70.0
66.2
51.3
42.7
35.9
49.5
1966
21.4
28.3
38.3
44.4
51.9
68.4
73.5
69.1
62.2
51.0
41.8
28.7
48.3
1967
29.3
23.8
35.9
48.0
51.9
70.4
69.0
67.3
60.4
50.7
35.2
30.9
47.7
1968
20.9
24.3
38.2
50.9
56.1
68.4
71.7
72.5
65.5
53.5
41.0
28.1
49.3
1969
23.1
28.2
33.5
49.4
57.4
64.7
73.2
73.1
64.8
51.4
37.9
26.4
48.6
1970
16.6
24.4
32.9
49.3
60.9
68.4
72.6
72.1
64.5
54.2
40.0
29.0
48.7
1971
20.7
27.4
32.0
45.2
56.4
70.8
69.6
70.3
66.6
58.5
38.5
33.3
49.1
1972
23.8
24.6
32.6
44.6
60.3
64.2
71.2
69.1
63.0
47.3
37.4
29.4
47.3
1973
28.8
25.3
43.3
48.8
55.5
69.9
72.6
72.9
64.9
56.2
41.4
28.7
50.7
1974
26.5
23.6
35.7
49.2
55.2
65.9
72.5
72.3
59.7
48.8
40.6
28.6
48.2
1975
28.3
27.5
32.5
40.9
62.8
69.0
72.2
72.3
59.1
52.9
46.8
29.1
49.5
1976
19.2
33.3
40.4
50.0
56.4
70.6
72.7
70.2
62.1
47.4
33.5
21.5
48.1
1977
12.8
25.2
41.5
52.4
64.4
65.5
75.8
70.6
65.1
47.9
40.5
25.5
48.9
1978
19.6
16.3
30.0
45.5
59.3
66.8
70.6
71.9
67.5
50.2
40.5
28.9
47.3
1979
18.6
16.5
37.7
44.6
56.5
66.6
70.4
67.9
62.6
50.1
39.5
31.9
46.9
1980
24.5
22.2
31.3
45.9
59.8
63.7
72.7
72.7
63.8
46.3
37.4
26.0
47.2