| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 47.5 | 53.0 | 56.8 | 62.5 | 70.1 | 78.3 | 86.7 | 86.1 | 79.5 | 67.6 | 52.4 | 46.3 | 65.6 |
| Highest Mean Max. Temperature (F) | 55.5 | 60.2 | 63.8 | 70.7 | 79.6 | 83.2 | 92.5 | 91.8 | 87.4 | 76.1 | 59.5 | 51.5 | 92.5 |
| Year Highest Occurred | 1986 | 1992 | 1992 | 1987 | 1992 | 1992 | 1994 | 1992 | 1974 | 1987 | 1999 | 1995 | 1994 |
| Lowest Mean Max. Temperature (F) | 39.9 | 47.3 | 50.6 | 54.4 | 61.5 | 70.9 | 79.2 | 78.5 | 69.3 | 60.6 | 44.8 | 40.3 | 39.9 |
| Year Lowest Occurred | 1982 | 1989 | 1975 | 1975 | 1977 | 1980 | 1993 | 1976 | 1978 | 1984 | 1994 | 1978 | 1982 |
| Mean Temperature (F) | 38.3 | 42.0 | 44.8 | 48.9 | 55.3 | 62.0 | 68.2 | 67.5 | 61.2 | 52.0 | 42.1 | 37.5 | 51.7 |
| Highest Mean Temperature (F) | 45.9 | 48.2 | 49.9 | 54.3 | 61.9 | 66.5 | 73.1 | 71.3 | 65.5 | 57.2 | 48.1 | 43.6 | 73.1 |
| Year Highest Occurred | 1995 | 1992 | 1993 | 1990 | 1992 | 1986 | 1998 | 1986 | 1998 | 1988 | 1999 | 1995 | 1998 |
| Lowest Mean Temperature (F) | 32.7 | 36.1 | 40.6 | 41.8 | 49.5 | 56.8 | 62.8 | 62.8 | 55.2 | 47.7 | 36.8 | 30.8 | 30.8 |
| Year Lowest Occurred | 1982 | 1989 | 1976 | 1975 | 1977 | 1980 | 1993 | 1976 | 1978 | 1971 | 1985 | 1990 | 1990 |
| Mean Min. Temperature (F) | 29.1 | 31.0 | 32.8 | 35.2 | 40.4 | 45.6 | 49.6 | 48.8 | 42.8 | 36.4 | 31.8 | 28.6 | 37.7 |
| Highest Mean Min. Temperature (F) | 37.7 | 36.3 | 38.9 | 39.7 | 44.7 | 49.8 | 54.9 | 53.4 | 46.9 | 42.0 | 36.8 | 35.7 | 54.9 |
| Year Highest Occurred | 1995 | 1986 | 1993 | 1992 | 1997 | 1986 | 1998 | 1997 | 1995 | 1979 | 1997 | 1995 | 1998 |
| Lowest Mean Min. Temperature (F) | 23.2 | 24.9 | 28.4 | 29.1 | 36.9 | 40.9 | 46.3 | 44.0 | 39.0 | 33.4 | 25.2 | 21.0 | 21.0 |
| Year Lowest Occurred | 1977 | 1989 | 1976 | 1975 | 1974 | 1976 | 1993 | 1980 | 1971 | 1974 | 1993 | 1976 | 1976 |
| Mean Precipitation (in.) | 2.49 | 1.92 | 2.09 | 1.68 | 1.55 | 0.92 | 0.51 | 0.61 | 0.88 | 1.46 | 2.85 | 2.80 | 19.76 |
| Highest Precipitation (in.) | 5.52 | 5.02 | 4.26 | 3.36 | 4.86 | 2.74 | 3.15 | 3.08 | 3.25 | 3.91 | 8.03 | 8.37 | 8.37 |
| Year Highest Occurred | 1996 | 1986 | 1989 | 1995 | 1998 | 1995 | 1987 | 1976 | 1977 | 1979 | 1998 | 1995 | 1995 |
| Lowest Precipitation (in.) | 0.16 | 0.17 | 0.79 | 0.55 | 0.07 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.45 | 0.65 | 0.00 |
| Year Lowest Occurred | 1985 | 1995 | 1992 | 1977 | 1982 | 1974 | 1994 | 1998 | 1999 | 1987 | 1976 | 1985 | 1974 |
| Heating Degree Days (F) | 828. | 644. | 626. | 484. | 309. | 130. | 40. | 44. | 160. | 405. | 686. | 855. | 5211. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 7. | 38. | 138. | 120. | 45. | 2. | 0. | 0. | 350. |