| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 37.5 | 43.0 | 48.8 | 55.2 | 63.2 | 71.5 | 80.7 | 80.5 | 71.3 | 60.1 | 44.9 | 37.9 | 57.9 |
| Highest Mean Max. Temperature (F) | 45.8 | 51.5 | 55.6 | 64.5 | 72.8 | 79.3 | 86.5 | 87.0 | 78.7 | 70.8 | 55.2 | 44.6 | 87.0 |
| Year Highest Occurred | 1986 | 1991 | 1992 | 1987 | 1992 | 1986 | 1998 | 1986 | 1990 | 1988 | 1999 | 1979 | 1986 |
| Lowest Mean Max. Temperature (F) | 26.5 | 31.2 | 41.2 | 47.5 | 55.9 | 64.0 | 68.4 | 72.5 | 59.1 | 52.3 | 32.4 | 29.8 | 26.5 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1975 | 1977 | 1980 | 1993 | 1976 | 1986 | 1984 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 28.3 | 33.1 | 37.9 | 42.9 | 49.4 | 55.8 | 62.6 | 62.3 | 54.4 | 46.0 | 35.0 | 28.7 | 44.7 |
| Highest Mean Temperature (F) | 35.7 | 40.3 | 43.1 | 48.7 | 55.3 | 61.0 | 69.1 | 67.0 | 61.2 | 54.0 | 45.6 | 34.0 | 69.1 |
| Year Highest Occurred | 1986 | 1992 | 1986 | 1987 | 1993 | 1992 | 1998 | 1986 | 1998 | 1988 | 1999 | 1980 | 1998 |
| Lowest Mean Temperature (F) | 14.7 | 20.9 | 31.2 | 36.7 | 44.5 | 51.3 | 55.6 | 56.8 | 46.9 | 40.4 | 23.5 | 20.1 | 14.7 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1975 | 1977 | 1980 | 1993 | 1980 | 1986 | 1971 | 1985 | 1990 | 1979 |
| Mean Min. Temperature (F) | 19.1 | 23.1 | 26.9 | 30.5 | 35.6 | 40.1 | 44.5 | 44.0 | 37.4 | 31.8 | 25.1 | 19.5 | 31.5 |
| Highest Mean Min. Temperature (F) | 26.2 | 29.7 | 31.1 | 35.7 | 42.6 | 45.1 | 51.7 | 48.1 | 45.1 | 37.9 | 35.9 | 26.1 | 51.7 |
| Year Highest Occurred | 1994 | 1992 | 1993 | 1992 | 1993 | 1992 | 1998 | 1999 | 1998 | 1992 | 1999 | 1996 | 1998 |
| Lowest Mean Min. Temperature (F) | 3.0 | 10.6 | 20.8 | 26.0 | 31.7 | 35.4 | 40.3 | 38.5 | 32.6 | 26.8 | 14.6 | 8.4 | 3.0 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1982 | 1976 | 1986 | 1980 | 1971 | 1971 | 1985 | 1990 | 1979 |
| Mean Precipitation (in.) | 1.66 | 1.29 | 1.68 | 1.71 | 1.91 | 1.35 | 0.82 | 0.90 | 0.81 | 1.21 | 1.80 | 1.64 | 16.78 |
| Highest Precipitation (in.) | 4.19 | 3.41 | 4.88 | 3.95 | 4.34 | 3.64 | 2.52 | 3.78 | 2.70 | 3.55 | 3.38 | 4.27 | 4.88 |
| Year Highest Occurred | 1984 | 1984 | 1984 | 1995 | 1994 | 1982 | 1992 | 1989 | 1995 | 1975 | 1995 | 1981 | 1984 |
| Lowest Precipitation (in.) | 0.35 | 0.31 | 0.35 | 0.12 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.32 | 0.19 | 0.00 |
| Year Lowest Occurred | 1974 | 1990 | 1985 | 1973 | 1976 | 1973 | 1995 | 2000 | 1999 | 1978 | 1974 | 1999 | 1973 |
| Heating Degree Days (F) | 1138. | 895. | 843. | 665. | 484. | 285. | 130. | 143. | 339. | 590. | 900. | 1125. | 7537. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 9. | 56. | 57. | 19. | 0. | 0. | 0. | 141. |