| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 38.6 | 42.4 | 47.2 | 53.3 | 61.7 | 70.3 | 79.5 | 80.0 | 72.9 | 61.8 | 45.3 | 38.6 | 57.6 |
| Highest Mean Max. Temperature (F) | 43.6 | 50.7 | 56.2 | 62.3 | 72.5 | 77.6 | 86.1 | 86.7 | 80.7 | 73.5 | 51.7 | 44.9 | 86.7 |
| Year Highest Occurred | 1994 | 1995 | 1992 | 1987 | 1992 | 1986 | 1985 | 1986 | 1991 | 1988 | 1976 | 1989 | 1986 |
| Lowest Mean Max. Temperature (F) | 30.5 | 34.3 | 39.9 | 43.9 | 53.0 | 64.0 | 70.3 | 70.0 | 63.7 | 53.0 | 37.1 | 32.3 | 30.5 |
| Year Lowest Occurred | 1993 | 1989 | 1971 | 1975 | 1977 | 1971 | 1993 | 1976 | 1986 | 1984 | 1994 | 1990 | 1993 |
| Mean Temperature (F) | 28.8 | 31.8 | 36.2 | 41.5 | 48.8 | 56.3 | 63.1 | 62.8 | 55.7 | 46.8 | 36.2 | 29.6 | 44.8 |
| Highest Mean Temperature (F) | 34.0 | 40.0 | 42.1 | 47.7 | 55.8 | 61.8 | 68.3 | 67.4 | 60.2 | 54.6 | 40.9 | 34.0 | 68.3 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1990 | 1992 | 1992 | 1985 | 1986 | 1990 | 1988 | 1976 | 1973 | 1985 |
| Lowest Mean Temperature (F) | 20.4 | 22.5 | 29.7 | 33.6 | 43.7 | 52.1 | 56.3 | 58.3 | 50.2 | 42.0 | 27.6 | 21.9 | 20.4 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1976 | 1993 | 1976 | 1986 | 1984 | 1994 | 1990 | 1979 |
| Mean Min. Temperature (F) | 18.9 | 21.2 | 25.1 | 29.6 | 35.8 | 42.2 | 46.7 | 45.5 | 38.5 | 31.8 | 27.1 | 20.5 | 31.9 |
| Highest Mean Min. Temperature (F) | 26.4 | 29.3 | 30.2 | 33.9 | 39.8 | 46.3 | 51.9 | 49.8 | 41.7 | 36.6 | 31.6 | 28.2 | 51.9 |
| Year Highest Occurred | 1981 | 1991 | 1983 | 1990 | 1987 | 1974 | 1975 | 1971 | 1990 | 1979 | 1999 | 1973 | 1975 |
| Lowest Mean Min. Temperature (F) | 8.0 | 10.8 | 19.4 | 23.3 | 31.3 | 38.6 | 40.9 | 40.6 | 35.3 | 27.9 | 17.4 | 11.4 | 8.0 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1999 | 1999 | 1999 | 1995 | 1988 | 1994 | 1985 | 1990 | 1979 |
| Mean Precipitation (in.) | 3.46 | 2.59 | 2.01 | 1.32 | 1.17 | 1.01 | 0.81 | 0.84 | 0.81 | 1.33 | 3.12 | 3.56 | 22.03 |
| Highest Precipitation (in.) | 6.18 | 8.29 | 4.96 | 2.88 | 5.24 | 4.72 | 3.64 | 3.36 | 2.67 | 3.21 | 7.68 | 9.01 | 9.01 |
| Year Highest Occurred | 1996 | 1986 | 1989 | 1992 | 1998 | 1982 | 1987 | 1999 | 1982 | 1979 | 1973 | 1981 | 1981 |
| Lowest Precipitation (in.) | 0.12 | 0.62 | 0.27 | 0.06 | 0.17 | 0.05 | 0.00 | 0.00 | 0.00 | 0.00 | 0.27 | 0.12 | 0.00 |
| Year Lowest Occurred | 1985 | 1973 | 1992 | 1977 | 1975 | 1979 | 1988 | 2000 | 1999 | 1988 | 1976 | 1976 | 1988 |
| Heating Degree Days (F) | 1123. | 931. | 894. | 707. | 504. | 276. | 121. | 115. | 291. | 564. | 865. | 1099. | 7490. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 13. | 61. | 45. | 11. | 0. | 0. | 0. | 130. |