| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 40.8 | 46.2 | 54.4 | 61.2 | 68.7 | 74.6 | 81.6 | 82.3 | 76.1 | 64.5 | 49.3 | 41.2 | 61.7 |
| Highest Mean Max. Temperature (F) | 48.7 | 53.5 | 62.2 | 67.0 | 76.4 | 81.5 | 88.8 | 88.0 | 82.3 | 71.5 | 54.3 | 45.9 | 88.8 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 1977 | 1992 | 1992 | 1985 | 1986 | 1991 | 1988 | 1990 | 1974 | 1985 |
| Lowest Mean Max. Temperature (F) | 28.1 | 37.2 | 48.4 | 56.0 | 63.9 | 69.3 | 73.4 | 76.5 | 69.6 | 58.6 | 39.0 | 29.1 | 28.1 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1971 | 1993 | 1975 | 1978 | 1984 | 1985 | 1985 | 1979 |
| Mean Temperature (F) | 34.4 | 38.1 | 44.2 | 49.8 | 56.5 | 62.2 | 67.5 | 67.2 | 60.2 | 50.6 | 41.3 | 35.1 | 50.6 |
| Highest Mean Temperature (F) | 40.4 | 43.9 | 49.0 | 53.8 | 61.1 | 67.3 | 71.5 | 71.9 | 64.5 | 55.9 | 45.9 | 40.8 | 71.9 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 1990 | 1992 | 1992 | 1985 | 1977 | 1998 | 1988 | 1999 | 1999 | 1977 |
| Lowest Mean Temperature (F) | 20.5 | 28.6 | 39.5 | 45.1 | 52.4 | 58.7 | 62.4 | 63.5 | 55.3 | 47.3 | 31.1 | 23.9 | 20.5 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1976 | 1993 | 1995 | 1985 | 1984 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 27.9 | 30.0 | 34.0 | 38.4 | 44.3 | 49.7 | 53.3 | 52.1 | 44.3 | 36.7 | 33.3 | 29.0 | 39.4 |
| Highest Mean Min. Temperature (F) | 35.3 | 36.3 | 38.8 | 41.3 | 47.0 | 53.1 | 58.3 | 56.1 | 48.0 | 41.2 | 38.9 | 36.3 | 58.3 |
| Year Highest Occurred | 1981 | 1992 | 1983 | 2000 | 1998 | 1992 | 1998 | 1977 | 1998 | 1975 | 1999 | 1999 | 1998 |
| Lowest Mean Min. Temperature (F) | 13.0 | 19.9 | 30.5 | 34.1 | 40.9 | 46.0 | 50.0 | 48.4 | 40.8 | 32.6 | 23.3 | 18.8 | 13.0 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1982 | 1977 | 1976 | 1999 | 1985 | 1985 | 1987 | 1993 | 1985 | 1979 |
| Mean Precipitation (in.) | 5.39 | 4.36 | 2.88 | 1.81 | 1.08 | 0.79 | 0.31 | 0.49 | 1.15 | 2.21 | 5.35 | 5.93 | 31.75 |
| Highest Precipitation (in.) | 9.60 | 9.91 | 5.96 | 3.54 | 3.27 | 2.72 | 1.17 | 1.98 | 3.69 | 7.45 | 12.66 | 15.64 | 15.64 |
| Year Highest Occurred | 1998 | 1996 | 1997 | 1996 | 1998 | 1981 | 1987 | 1977 | 1982 | 1994 | 1984 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.27 | 0.74 | 0.78 | 0.14 | 0.06 | 0.06 | 0.00 | 0.00 | 0.00 | 0.01 | 0.92 | 1.26 | 0.00 |
| Year Lowest Occurred | 1985 | 1973 | 1978 | 1977 | 1992 | 1979 | 2000 | 2000 | 1993 | 1988 | 1976 | 1976 | 2000 |
| Heating Degree Days (F) | 950. | 753. | 644. | 455. | 268. | 123. | 38. | 43. | 173. | 447. | 711. | 928. | 5533. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 6. | 37. | 115. | 111. | 29. | 0. | 0. | 0. | 298. |