| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 31.6 | 37.3 | 45.7 | 55.2 | 64.3 | 70.8 | 79.6 | 79.7 | 69.7 | 55.8 | 39.5 | 32.4 | 55.1 |
| Highest Mean Max. Temperature (F) | 37.7 | 43.1 | 56.6 | 61.9 | 72.5 | 78.2 | 89.6 | 86.0 | 79.2 | 63.2 | 46.6 | 38.8 | 89.6 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1987 | 1992 | 1986 | 1985 | 1986 | 1990 | 1988 | 1999 | 1979 | 1985 |
| Lowest Mean Max. Temperature (F) | 20.0 | 28.9 | 39.3 | 48.1 | 56.5 | 63.3 | 67.4 | 72.7 | 61.1 | 50.6 | 28.8 | 23.7 | 20.0 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1972 | 1996 | 1991 | 1993 | 1980 | 1986 | 1985 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 26.3 | 30.4 | 37.0 | 44.5 | 52.3 | 58.6 | 64.9 | 64.9 | 56.7 | 46.0 | 34.4 | 27.8 | 45.3 |
| Highest Mean Temperature (F) | 33.6 | 36.4 | 43.3 | 49.1 | 58.2 | 64.1 | 70.9 | 68.6 | 63.0 | 51.8 | 40.5 | 33.4 | 70.9 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1987 | 1993 | 1992 | 1998 | 1986 | 1998 | 1988 | 1999 | 1979 | 1998 |
| Lowest Mean Temperature (F) | 11.9 | 20.8 | 31.2 | 39.2 | 47.6 | 54.1 | 58.2 | 59.1 | 51.7 | 42.5 | 23.2 | 19.3 | 11.9 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1972 | 1996 | 1991 | 1993 | 1980 | 1971 | 1985 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 20.9 | 23.5 | 28.2 | 33.7 | 40.3 | 46.3 | 50.1 | 50.0 | 43.6 | 36.2 | 29.3 | 23.2 | 35.4 |
| Highest Mean Min. Temperature (F) | 29.5 | 29.8 | 32.4 | 37.3 | 45.1 | 50.1 | 56.7 | 53.3 | 48.7 | 40.4 | 34.3 | 29.3 | 56.7 |
| Year Highest Occurred | 1981 | 1992 | 1983 | 1992 | 1993 | 1992 | 1998 | 1999 | 1998 | 1988 | 1999 | 1973 | 1998 |
| Lowest Mean Min. Temperature (F) | 3.9 | 12.7 | 23.0 | 30.2 | 35.9 | 43.7 | 47.6 | 45.5 | 39.6 | 32.7 | 17.5 | 13.9 | 3.9 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1982 | 1974 | 1984 | 1986 | 1980 | 1971 | 1991 | 1985 | 1978 | 1979 |
| Mean Precipitation (in.) | 4.06 | 3.13 | 2.72 | 2.19 | 2.43 | 2.37 | 1.31 | 1.30 | 1.49 | 2.28 | 4.37 | 4.42 | 32.07 |
| Highest Precipitation (in.) | 9.74 | 7.95 | 6.40 | 4.41 | 6.56 | 5.68 | 4.83 | 6.23 | 3.57 | 5.85 | 8.40 | 8.27 | 9.74 |
| Year Highest Occurred | 1974 | 1982 | 1997 | 1993 | 1998 | 1981 | 1993 | 1976 | 1985 | 1995 | 1989 | 1996 | 1974 |
| Lowest Precipitation (in.) | 0.49 | 0.43 | 0.15 | 0.39 | 0.91 | 0.41 | 0.01 | 0.01 | 0.02 | 0.07 | 0.93 | 0.67 | 0.01 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1977 | 1999 | 1989 | 1985 | 1994 | 1990 | 1974 | 1979 | 1985 | 1985 |
| Heating Degree Days (F) | 1200. | 970. | 870. | 617. | 396. | 212. | 87. | 87. | 269. | 589. | 918. | 1153. | 7368. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 19. | 83. | 83. | 18. | 0. | 0. | 0. | 204. |