| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 39.1 | 45.3 | 51.9 | 59.4 | 67.7 | 75.8 | 83.5 | 83.1 | 76.2 | 64.7 | 47.0 | 38.7 | 61.0 |
| Highest Mean Max. Temperature (F) | 48.3 | 56.9 | 59.0 | 68.3 | 79.3 | 82.0 | 89.5 | 88.3 | 82.9 | 74.9 | 56.4 | 46.2 | 89.5 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1987 | 1992 | 1986 | 1994 | 1992 | 1991 | 1988 | 1976 | 1976 | 1994 |
| Lowest Mean Max. Temperature (F) | 25.2 | 35.9 | 44.8 | 51.2 | 56.6 | 69.5 | 77.2 | 75.2 | 65.8 | 56.3 | 38.0 | 30.8 | 25.2 |
| Year Lowest Occurred | 1977 | 1989 | 1977 | 1975 | 1998 | 1980 | 1987 | 1976 | 1986 | 1984 | 1994 | 1971 | 1977 |
| Mean Temperature (F) | 29.3 | 34.2 | 38.9 | 44.5 | 52.1 | 59.2 | 64.7 | 63.2 | 56.5 | 47.2 | 35.7 | 29.0 | 46.2 |
| Highest Mean Temperature (F) | 38.5 | 41.0 | 44.7 | 51.0 | 60.3 | 64.3 | 69.1 | 66.6 | 60.0 | 53.1 | 42.5 | 35.5 | 69.1 |
| Year Highest Occurred | 1986 | 1991 | 1978 | 1990 | 1992 | 1986 | 1994 | 1992 | 1991 | 1988 | 1995 | 1995 | 1994 |
| Lowest Mean Temperature (F) | 14.3 | 23.3 | 33.9 | 38.3 | 45.3 | 54.4 | 59.5 | 58.8 | 50.5 | 41.9 | 27.5 | 22.8 | 14.3 |
| Year Lowest Occurred | 1977 | 1989 | 1977 | 1975 | 1977 | 1980 | 1993 | 1976 | 1986 | 1971 | 1985 | 1971 | 1977 |
| Mean Min. Temperature (F) | 19.5 | 23.0 | 25.8 | 29.5 | 36.4 | 42.5 | 45.8 | 43.3 | 36.8 | 29.6 | 24.3 | 19.2 | 31.3 |
| Highest Mean Min. Temperature (F) | 29.6 | 29.0 | 30.5 | 35.7 | 41.2 | 47.0 | 48.9 | 46.6 | 41.1 | 36.4 | 30.4 | 29.0 | 48.9 |
| Year Highest Occurred | 1978 | 1980 | 1978 | 1992 | 1992 | 1992 | 1996 | 1977 | 1998 | 1979 | 1981 | 1981 | 1996 |
| Lowest Mean Min. Temperature (F) | 3.4 | 10.6 | 21.1 | 24.2 | 32.5 | 39.1 | 41.1 | 39.9 | 33.0 | 25.7 | 14.2 | 11.8 | 3.4 |
| Year Lowest Occurred | 1977 | 1989 | 1985 | 1982 | 1977 | 1990 | 1983 | 1985 | 1971 | 1971 | 1993 | 1990 | 1977 |
| Mean Precipitation (in.) | 1.35 | 1.18 | 1.26 | 0.90 | 0.97 | 0.79 | 0.35 | 0.53 | 0.60 | 0.87 | 1.27 | 1.28 | 11.35 |
| Highest Precipitation (in.) | 3.15 | 2.98 | 3.68 | 3.26 | 3.84 | 2.83 | 2.60 | 4.30 | 1.83 | 2.89 | 3.30 | 4.31 | 4.31 |
| Year Highest Occurred | 2000 | 1996 | 1995 | 1978 | 1998 | 1998 | 1987 | 1976 | 1977 | 1979 | 1973 | 1983 | 1983 |
| Lowest Precipitation (in.) | 0.04 | 0.19 | 0.36 | 0.02 | 0.11 | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | 0.18 | 0.12 | 0.00 |
| Year Lowest Occurred | 1984 | 1988 | 1994 | 1977 | 1975 | 1973 | 1981 | 1998 | 1999 | 1978 | 1974 | 1976 | 1973 |
| Heating Degree Days (F) | 1108. | 864. | 810. | 618. | 405. | 198. | 85. | 99. | 265. | 554. | 880. | 1117. | 7003. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 4. | 23. | 74. | 43. | 10. | 0. | 0. | 0. | 154. |