| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 39.4 | 45.6 | 53.8 | 61.6 | 70.0 | 78.0 | 87.6 | 87.6 | 76.7 | 62.0 | 46.8 | 39.2 | 62.4 |
| Highest Mean Max. Temperature (F) | 47.0 | 56.9 | 60.9 | 68.9 | 77.7 | 85.3 | 95.5 | 93.1 | 86.5 | 70.0 | 53.6 | 45.3 | 95.5 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 1977 | 1992 | 1977 | 1985 | 1981 | 1990 | 1988 | 1999 | 1979 | 1985 |
| Lowest Mean Max. Temperature (F) | 21.4 | 32.0 | 48.5 | 54.8 | 64.0 | 71.4 | 76.7 | 81.6 | 65.3 | 57.0 | 33.8 | 26.7 | 21.4 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1996 | 1991 | 1993 | 1976 | 1985 | 1985 | 1985 | 1985 | 1979 |
| Mean Temperature (F) | 33.7 | 38.4 | 44.7 | 51.1 | 58.5 | 65.8 | 73.5 | 73.4 | 63.8 | 51.6 | 40.4 | 33.9 | 52.4 |
| Highest Mean Temperature (F) | 41.3 | 47.7 | 49.1 | 56.4 | 63.0 | 71.7 | 79.4 | 77.7 | 72.2 | 58.0 | 46.4 | 39.8 | 79.4 |
| Year Highest Occurred | 1990 | 1991 | 1992 | 1990 | 1992 | 1977 | 1985 | 1971 | 1990 | 1988 | 1990 | 1980 | 1985 |
| Lowest Mean Temperature (F) | 16.3 | 26.0 | 40.3 | 45.9 | 54.1 | 60.3 | 65.4 | 68.1 | 56.1 | 47.8 | 28.3 | 22.6 | 16.3 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1996 | 1991 | 1993 | 1980 | 1985 | 1984 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 28.0 | 31.2 | 35.6 | 40.6 | 47.0 | 53.6 | 59.3 | 59.3 | 50.9 | 41.2 | 34.1 | 28.5 | 42.4 |
| Highest Mean Min. Temperature (F) | 36.5 | 38.5 | 39.5 | 46.0 | 50.5 | 58.1 | 64.1 | 63.0 | 57.9 | 45.9 | 40.6 | 34.4 | 64.1 |
| Year Highest Occurred | 1990 | 1991 | 1986 | 1990 | 1993 | 1977 | 1998 | 1977 | 1990 | 1988 | 1990 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | 11.2 | 20.0 | 31.0 | 36.4 | 43.5 | 49.1 | 54.1 | 54.1 | 45.8 | 38.1 | 22.8 | 18.5 | 11.2 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1972 | 1999 | 1991 | 1993 | 1980 | 1971 | 1971 | 1985 | 1985 | 1979 |
| Mean Precipitation (in.) | 1.14 | 0.95 | 1.12 | 1.31 | 1.56 | 1.16 | 0.72 | 0.75 | 0.81 | 0.96 | 1.21 | 1.05 | 12.74 |
| Highest Precipitation (in.) | 2.81 | 2.22 | 2.70 | 3.29 | 3.78 | 2.60 | 2.60 | 2.96 | 2.48 | 2.40 | 2.79 | 2.99 | 3.78 |
| Year Highest Occurred | 1975 | 2000 | 1972 | 1978 | 1998 | 1995 | 1987 | 1989 | 2000 | 1995 | 1973 | 1973 | 1998 |
| Lowest Precipitation (in.) | 0.14 | 0.17 | 0.28 | 0.10 | 0.49 | 0.24 | 0.01 | 0.01 | 0.00 | 0.00 | 0.23 | 0.26 | 0.00 |
| Year Lowest Occurred | 1991 | 1988 | 1994 | 1977 | 1992 | 1973 | 1973 | 1981 | 1999 | 1987 | 1976 | 1976 | 1999 |
| Heating Degree Days (F) | 962. | 742. | 616. | 411. | 218. | 71. | 10. | 10. | 104. | 403. | 722. | 951. | 5220. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 3. | 29. | 105. | 283. | 285. | 84. | 3. | 0. | 0. | 792. |