Ohio, Average Temperature, December-February Degrees Fahrenheit 1901-1915 -99 189602 29.9 2.4 189702 29.1 1.6 189802 30.7 3.2 189902 25.2 -2.3 190002 28.1 0.6 190102 26.4 -1.1 190202 24.7 -2.8 190302 27.9 0.4 190402 21.4 -6.1 190502 22.7 -4.8 190602 30.8 3.3 190702 29.3 1.8 190802 28.9 1.4 190902 32.4 4.9 191002 25.2 -2.3 191102 29.9 2.4 191202 24.4 -3.1 191302 31.1 3.6 191402 28.7 1.2 191502 28.1 0.6