| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 32.4 | 41.0 | 54.0 | 64.6 | 72.6 | 79.2 | 85.9 | 85.3 | 75.1 | 60.5 | 43.1 | 33.0 | 60.6 |
| Highest Mean Max. Temperature (F) | 40.5 | 47.8 | 62.0 | 70.8 | 78.3 | 86.0 | 92.9 | 90.7 | 82.5 | 65.1 | 49.5 | 38.5 | 92.9 |
| Year Highest Occurred | 1990 | 1991 | 1992 | 1977 | 1992 | 1992 | 1985 | 1971 | 1998 | 1987 | 1990 | 1999 | 1985 |
| Lowest Mean Max. Temperature (F) | 21.6 | 33.0 | 47.4 | 59.7 | 66.8 | 73.0 | 78.4 | 78.7 | 67.5 | 56.6 | 29.0 | 23.6 | 21.6 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1975 | 1984 | 1981 | 1993 | 1976 | 1985 | 1996 | 1985 | 1984 | 1979 |
| Mean Temperature (F) | 26.9 | 33.5 | 42.7 | 51.0 | 58.3 | 64.4 | 70.2 | 69.6 | 60.4 | 48.5 | 36.4 | 28.3 | 49.2 |
| Highest Mean Temperature (F) | 34.4 | 40.1 | 48.1 | 55.3 | 62.8 | 70.2 | 74.8 | 73.4 | 65.2 | 52.7 | 42.0 | 34.7 | 74.8 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1987 | 1993 | 1992 | 1998 | 1971 | 1998 | 1988 | 1998 | 1979 | 1998 |
| Lowest Mean Temperature (F) | 14.2 | 24.5 | 37.9 | 47.0 | 54.5 | 59.6 | 65.1 | 65.0 | 56.1 | 45.5 | 23.1 | 17.7 | 14.2 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1996 | 1981 | 1993 | 1995 | 1985 | 1984 | 1985 | 1984 | 1979 |
| Mean Min. Temperature (F) | 21.3 | 26.0 | 31.3 | 37.3 | 43.9 | 49.6 | 54.4 | 53.8 | 45.7 | 36.5 | 29.6 | 23.6 | 37.8 |
| Highest Mean Min. Temperature (F) | 30.6 | 34.5 | 34.8 | 41.1 | 47.6 | 54.5 | 59.0 | 57.2 | 48.3 | 40.4 | 35.4 | 31.0 | 59.0 |
| Year Highest Occurred | 1981 | 1992 | 1986 | 1987 | 1998 | 1992 | 1998 | 1977 | 1978 | 1988 | 1998 | 1979 | 1998 |
| Lowest Mean Min. Temperature (F) | 6.7 | 14.9 | 26.9 | 33.7 | 40.5 | 46.0 | 51.4 | 49.1 | 42.3 | 33.0 | 17.3 | 11.8 | 6.7 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1982 | 1999 | 1976 | 1999 | 1995 | 1984 | 1991 | 1985 | 1984 | 1979 |
| Mean Precipitation (in.) | 1.06 | 1.01 | 0.79 | 0.84 | 1.37 | 1.43 | 0.68 | 0.68 | 0.45 | 0.70 | 1.24 | 1.25 | 11.50 |
| Highest Precipitation (in.) | 3.10 | 2.09 | 1.43 | 2.03 | 4.46 | 3.50 | 3.57 | 2.14 | 1.41 | 1.68 | 3.52 | 3.36 | 4.46 |
| Year Highest Occurred | 1995 | 1996 | 1986 | 1994 | 1990 | 1997 | 1992 | 1991 | 1985 | 1997 | 1998 | 1996 | 1990 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.08 | 0.11 | 0.00 | 0.21 | 0.00 | 0.00 | 0.00 | 0.06 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1989 | 1988 | 1993 | 1999 | 1999 | 1986 | 1985 | 1998 | 1991 | 1988 | 1993 | 2000 | 1989 |
| Heating Degree Days (F) | 1182. | 883. | 693. | 422. | 222. | 92. | 18. | 28. | 177. | 511. | 860. | 1138. | 6226. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 12. | 74. | 178. | 168. | 39. | 0. | 0. | 0. | 471. |