| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 34.1 | 40.2 | 49.3 | 59.7 | 69.1 | 79.8 | 87.6 | 86.8 | 76.7 | 63.6 | 46.2 | 35.6 | 60.7 |
| Highest Mean Max. Temperature (F) | 41.4 | 46.5 | 56.8 | 68.7 | 75.4 | 86.0 | 92.2 | 90.4 | 83.8 | 72.9 | 57.3 | 43.2 | 92.2 |
| Year Highest Occurred | 1999 | 1977 | 1992 | 1987 | 1992 | 1988 | 1989 | 1981 | 1979 | 1988 | 1999 | 1976 | 1989 |
| Lowest Mean Max. Temperature (F) | 25.2 | 33.5 | 43.3 | 50.0 | 63.3 | 72.1 | 79.8 | 82.3 | 69.3 | 54.2 | 39.1 | 27.7 | 25.2 |
| Year Lowest Occurred | 1979 | 1985 | 1973 | 1975 | 1983 | 1998 | 1993 | 1993 | 1986 | 1984 | 2000 | 1990 | 1979 |
| Mean Temperature (F) | 22.0 | 26.8 | 35.9 | 44.7 | 52.4 | 60.4 | 67.3 | 66.7 | 57.4 | 46.3 | 33.5 | 23.6 | 44.8 |
| Highest Mean Temperature (F) | 30.6 | 33.2 | 43.2 | 50.0 | 55.5 | 65.0 | 70.9 | 69.7 | 62.3 | 52.0 | 40.9 | 31.4 | 70.9 |
| Year Highest Occurred | 1999 | 1986 | 1986 | 1987 | 1994 | 1988 | 1989 | 1971 | 1998 | 1988 | 1999 | 1995 | 1989 |
| Lowest Mean Temperature (F) | 13.8 | 18.5 | 29.5 | 37.9 | 47.9 | 55.6 | 59.5 | 62.8 | 53.0 | 41.1 | 26.2 | 13.6 | 13.6 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1975 | 1975 | 1998 | 1993 | 1993 | 1971 | 1984 | 2000 | 1990 | 1990 |
| Mean Min. Temperature (F) | 9.9 | 13.4 | 22.5 | 29.6 | 35.7 | 41.0 | 46.9 | 46.5 | 38.0 | 28.9 | 20.7 | 11.6 | 28.7 |
| Highest Mean Min. Temperature (F) | 19.8 | 22.8 | 29.6 | 34.0 | 39.3 | 44.6 | 50.9 | 53.1 | 43.9 | 33.6 | 26.7 | 21.2 | 53.1 |
| Year Highest Occurred | 1999 | 1986 | 1986 | 1989 | 1987 | 1986 | 1998 | 1983 | 1998 | 1972 | 1998 | 1977 | 1983 |
| Lowest Mean Min. Temperature (F) | 0.1 | 3.4 | 15.0 | 25.7 | 31.5 | 36.6 | 39.1 | 42.8 | 33.9 | 24.2 | 11.4 | -0.6 | -0.6 |
| Year Lowest Occurred | 1989 | 1985 | 1976 | 1975 | 1975 | 1979 | 1993 | 1985 | 1974 | 1976 | 1993 | 1990 | 1990 |
| Mean Precipitation (in.) | 2.64 | 2.10 | 2.21 | 2.01 | 2.21 | 1.29 | 0.87 | 0.84 | 1.69 | 1.97 | 2.20 | 2.06 | 22.09 |
| Highest Precipitation (in.) | 7.81 | 7.78 | 4.71 | 4.96 | 5.00 | 4.38 | 2.65 | 3.46 | 6.92 | 4.26 | 5.13 | 8.09 | 8.09 |
| Year Highest Occurred | 1996 | 1986 | 1982 | 1986 | 1977 | 1998 | 1993 | 2000 | 1982 | 1981 | 1994 | 1983 | 1983 |
| Lowest Precipitation (in.) | 0.43 | 0.36 | 0.62 | 0.06 | 0.22 | 0.00 | 0.00 | 0.00 | 0.02 | 0.00 | 0.19 | 0.04 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1992 | 1987 | 1972 | 1994 | 1988 | 1996 | 1974 | 1988 | 1976 | 1976 | 1994 |
| Heating Degree Days (F) | 1333. | 1070. | 903. | 610. | 392. | 169. | 45. | 45. | 241. | 581. | 948. | 1284. | 7621. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 30. | 113. | 96. | 12. | 0. | 0. | 0. | 251. |