| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 33.8 | 39.6 | 49.4 | 59.3 | 67.7 | 75.3 | 83.2 | 83.5 | 71.8 | 58.2 | 42.1 | 34.0 | 58.2 |
| Highest Mean Max. Temperature (F) | 43.5 | 48.5 | 57.7 | 67.2 | 72.7 | 83.5 | 93.2 | 90.6 | 81.5 | 65.9 | 49.2 | 41.9 | 93.2 |
| Year Highest Occurred | 1994 | 1991 | 1986 | 1987 | 1976 | 1986 | 1985 | 1971 | 1990 | 1988 | 1990 | 1980 | 1985 |
| Lowest Mean Max. Temperature (F) | 13.3 | 25.1 | 41.7 | 52.0 | 59.4 | 68.7 | 70.2 | 76.7 | 63.6 | 53.3 | 28.8 | 21.6 | 13.3 |
| Year Lowest Occurred | 1979 | 1989 | 1989 | 1975 | 1996 | 1981 | 1993 | 1993 | 1986 | 1972 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 26.6 | 31.1 | 38.8 | 46.6 | 54.1 | 61.2 | 67.0 | 66.9 | 57.2 | 46.1 | 34.5 | 27.1 | 46.4 |
| Highest Mean Temperature (F) | 36.6 | 39.1 | 46.0 | 52.3 | 58.4 | 67.4 | 74.1 | 71.2 | 63.9 | 52.5 | 40.8 | 34.4 | 74.1 |
| Year Highest Occurred | 1994 | 1991 | 1986 | 1987 | 1987 | 1986 | 1985 | 1971 | 1998 | 1988 | 1999 | 1980 | 1985 |
| Lowest Mean Temperature (F) | 3.9 | 16.2 | 33.2 | 40.5 | 49.4 | 56.8 | 59.0 | 61.5 | 52.9 | 42.8 | 22.6 | 15.1 | 3.9 |
| Year Lowest Occurred | 1979 | 1989 | 1989 | 1975 | 1996 | 1976 | 1993 | 1980 | 1971 | 1971 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 19.4 | 22.6 | 28.2 | 33.8 | 40.5 | 47.1 | 50.8 | 50.3 | 42.6 | 34.0 | 26.8 | 20.1 | 34.7 |
| Highest Mean Min. Temperature (F) | 29.6 | 30.7 | 34.3 | 38.2 | 44.3 | 52.3 | 56.1 | 53.3 | 47.9 | 39.1 | 33.3 | 29.3 | 56.1 |
| Year Highest Occurred | 1994 | 1983 | 1986 | 1990 | 1987 | 1992 | 1998 | 1999 | 1998 | 1988 | 1998 | 1999 | 1998 |
| Lowest Mean Min. Temperature (F) | -5.5 | 7.3 | 24.4 | 29.1 | 36.7 | 42.4 | 47.7 | 45.3 | 37.8 | 29.6 | 16.5 | 8.5 | -5.5 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1975 | 1974 | 1976 | 1993 | 1980 | 1971 | 1971 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.99 | 0.77 | 1.16 | 1.42 | 2.59 | 2.30 | 1.39 | 1.28 | 1.36 | 1.18 | 1.03 | 1.07 | 16.54 |
| Highest Precipitation (in.) | 2.63 | 2.19 | 2.47 | 3.11 | 8.19 | 5.21 | 3.84 | 3.84 | 3.93 | 3.32 | 2.30 | 4.65 | 8.19 |
| Year Highest Occurred | 1974 | 2000 | 1987 | 1984 | 1980 | 1980 | 1987 | 1985 | 1985 | 1975 | 1986 | 1996 | 1980 |
| Lowest Precipitation (in.) | 0.17 | 0.16 | 0.25 | 0.08 | 0.89 | 0.23 | 0.00 | 0.06 | 0.00 | 0.05 | 0.23 | 0.22 | 0.00 |
| Year Lowest Occurred | 1987 | 1973 | 1973 | 1977 | 1974 | 1979 | 1985 | 2000 | 1990 | 1978 | 1987 | 1976 | 1985 |
| Heating Degree Days (F) | 1190. | 949. | 812. | 553. | 342. | 157. | 69. | 59. | 254. | 586. | 916. | 1177. | 7064. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 3. | 44. | 132. | 117. | 18. | 0. | 0. | 0. | 314. |