Detroit Area Average Monthly Temperatures from 1874 to 1880
1874 28.6 27.3 34.3 37.6 58.8 69.1 70.9 69.0 66.4 51.1 37.8 29.7 48.4
1875 15.3 12.3 28.0 40.5 56.7 66.0 69.6 66.8 59.9 46.5 34.5 32.8 44.1
1876 32.1 28.1 29.5 43.7 56.8 68.8 72.8 71.6 59.0 45.8 39.1 17.8 47.1
1877 19.2 33.6 26.0 45.4 56.4 66.1 72.0 71.2 64.3 53.8 39.2 38.1 48.8
1878 27.3 29.2 41.4 53.4 55.4 63.8 74.0 71.2 64.3 51.7 38.9 22.8 49.5
1879 20.8 22.0 34.3 45.2 59.1 65.1 72.8 69.4 58.6 59.6 38.1 28.7 47.8
1880 36.7 32.1 32.8 46.2 63.7 68.4 70.8 69.1 61.8 48.6 29.8 21.8 48.5