ROCHESTER INTL AP, MINNESOTA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 20.2 26.0 38.2 55.2 68.1 77.7 81.8 78.8 69.8 58.2 40.9 25.0 53.3
Highest Mean Max. Temperature (F) 35.0 38.2 49.5 64.9 76.3 84.2 87.9 85.6 75.0 69.2 47.9 34.5 57.2
Year Highest Occurred 1990 1987 1968 1977 1977 1988 1976 1983 1978 1963 1963 1965 1987
Lowest Mean Max. Temperature (F) 7.3 15.5 25.9 45.9 61.7 69.3 76.6 74.5 62.2 52.3 30.6 10.9 51.0
Year Lowest Occurred 1979 1979 1965 1961 1983 1969 1962 1986 1965 1987 1985 1983 1972
Mean Temperature (F) 11.5 17.1 29.8 44.9 56.8 66.5 70.9 68.2 59.2 47.9 32.6 17.2 43.6
Highest Mean Temperature (F) 25.8 29.3 39.3 53.0 64.5 71.4 74.6 73.6 63.7 58.1 38.8 28.5 47.5
Year Highest Occurred 1990 1987 1973 1977 1977 1971 1974 1983 1978 1963 1963 1965 1987
Lowest Mean Temperature (F) -1.8 5.7 18.1 37.9 51.3 59.6 66.9 64.0 54.7 42.0 23.0 2.9 41.1
Year Lowest Occurred 1977 1979 1965 1961 1967 1969 1967 1986 1974 1988 1985 1983 1972
Mean Min. Temperature (F) 2.6 8.1 21.3 34.6 45.5 55.2 60.1 57.5 48.5 37.6 24.4 9.4 33.7
Highest Mean Min. Temperature (F) 16.6 20.3 31.2 41.1 52.6 60.5 63.4 61.5 52.4 47.0 29.6 22.5 37.6
Year Highest Occurred 1990 1987 1973 1977 1977 1971 1987 1983 1978 1963 1963 1965 1987
Lowest Mean Min. Temperature (F) -12.2 -4.1 10.3 29.9 39.4 49.8 55.9 52.5 42.2 30.1 13.9 -5.1 31.2
Year Lowest Occurred 1977 1979 1965 1961 1966 1969 1967 1967 1974 1988 1976 1983 1972
Mean Precipitation (in.) 0.78 0.74 1.78 2.73 3.40 3.72 4.20 3.88 3.47 2.32 1.61 1.03 29.66
Highest Precipitation (in.) 2.53 2.21 3.58 6.47 8.41 9.27 12.33 9.52 10.50 6.08 4.61 2.83 43.94
Year Highest Occurred 1967 1971 1990 1990 1982 1990 1978 1979 1986 1970 1975 1982 1990
Lowest Precipitation (in.) 0.07 0.04 0.43 1.02 1.17 0.94 1.02 1.17 0.38 0.27 0.06 0.22 15.44
Year Lowest Occurred 1961 1964 1978 1987 1963 1985 1975 1970 1975 1965 1967 1967 1976
Heating Degree Days (F) 1659. 1341. 1091. 603. 282. 56. 16. 33. 185. 530. 972. 1482. 8250.
Cooling Degree Days (F) 0. 0. 0. 0. 28. 101. 199. 133. 11. 0. 0. 0. 472.

Western Regional Climate Center, wrcc@dri.edu