| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 41.1 | 44.5 | 49.1 | 56.6 | 64.7 | 73.2 | 83.0 | 82.8 | 75.6 | 63.9 | 47.4 | 41.4 | 60.3 |
| Highest Mean Max. Temperature (F) | 49.2 | 53.5 | 57.1 | 65.6 | 75.7 | 79.2 | 88.3 | 88.4 | 82.1 | 74.6 | 60.0 | 50.1 | 88.4 |
| Year Highest Occurred | 1986 | 1995 | 1978 | 1987 | 1992 | 1974 | 1994 | 1981 | 1974 | 1978 | 1976 | 1976 | 1981 |
| Lowest Mean Max. Temperature (F) | 34.9 | 36.4 | 42.1 | 47.0 | 55.3 | 67.5 | 76.3 | 72.2 | 65.8 | 53.4 | 37.9 | 34.1 | 34.1 |
| Year Lowest Occurred | 1993 | 1989 | 1975 | 1975 | 1998 | 1980 | 1993 | 1976 | 1986 | 1984 | 1994 | 1971 | 1971 |
| Mean Temperature (F) | 30.0 | 33.3 | 36.9 | 41.9 | 48.6 | 55.6 | 62.8 | 62.4 | 55.1 | 46.4 | 35.8 | 30.2 | 44.9 |
| Highest Mean Temperature (F) | 38.6 | 39.6 | 43.4 | 48.6 | 56.0 | 60.7 | 67.0 | 65.3 | 59.5 | 53.1 | 42.5 | 35.6 | 67.0 |
| Year Highest Occurred | 1986 | 1995 | 1978 | 1987 | 1992 | 1977 | 1998 | 1981 | 1998 | 1988 | 1995 | 1980 | 1998 |
| Lowest Mean Temperature (F) | 25.2 | 24.7 | 30.3 | 34.4 | 42.5 | 51.6 | 56.1 | 56.7 | 48.4 | 41.1 | 28.2 | 24.1 | 24.1 |
| Year Lowest Occurred | 1982 | 1989 | 1971 | 1975 | 1977 | 1980 | 1993 | 1976 | 1985 | 1971 | 1985 | 1972 | 1972 |
| Mean Min. Temperature (F) | 18.9 | 22.1 | 24.6 | 27.2 | 32.5 | 37.9 | 42.6 | 42.0 | 34.5 | 28.9 | 24.2 | 18.9 | 29.5 |
| Highest Mean Min. Temperature (F) | 27.9 | 28.6 | 29.6 | 31.8 | 36.9 | 42.5 | 46.3 | 45.3 | 38.3 | 34.3 | 30.4 | 25.7 | 46.3 |
| Year Highest Occurred | 1986 | 1980 | 1983 | 1992 | 1993 | 1977 | 1985 | 1990 | 1995 | 1979 | 1995 | 1981 | 1985 |
| Lowest Mean Min. Temperature (F) | 10.7 | 13.0 | 18.1 | 21.6 | 28.9 | 33.6 | 35.9 | 37.6 | 28.7 | 24.2 | 16.2 | 10.5 | 10.5 |
| Year Lowest Occurred | 1977 | 1989 | 1971 | 1982 | 1977 | 1976 | 1993 | 1980 | 1971 | 1971 | 1985 | 1978 | 1978 |
| Mean Precipitation (in.) | 1.90 | 1.91 | 2.14 | 1.43 | 1.50 | 1.20 | 0.56 | 0.69 | 0.74 | 1.36 | 2.10 | 2.21 | 17.74 |
| Highest Precipitation (in.) | 3.82 | 4.30 | 4.00 | 4.43 | 3.45 | 3.22 | 2.15 | 3.95 | 2.97 | 3.03 | 6.32 | 6.71 | 6.71 |
| Year Highest Occurred | 1995 | 1986 | 1983 | 1978 | 1977 | 1977 | 1987 | 1976 | 1977 | 1979 | 1998 | 1981 | 1981 |
| Lowest Precipitation (in.) | 0.27 | 0.43 | 0.64 | 0.00 | 0.19 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.29 | 0.29 | 0.00 |
| Year Lowest Occurred | 1984 | 1988 | 1992 | 1977 | 1976 | 1974 | 1979 | 1981 | 1999 | 1978 | 1976 | 1989 | 1977 |
| Heating Degree Days (F) | 1086. | 888. | 873. | 693. | 508. | 291. | 128. | 116. | 309. | 576. | 876. | 1082. | 7426. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 7. | 60. | 35. | 11. | 0. | 0. | 0. | 113. |