| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 40.7 | 45.9 | 51.1 | 57.8 | 67.1 | 76.4 | 85.6 | 85.1 | 77.2 | 66.2 | 49.4 | 41.5 | 62.0 |
| Highest Mean Max. Temperature (F) | 47.2 | 58.8 | 57.5 | 67.1 | 78.9 | 83.0 | 89.6 | 90.0 | 84.1 | 76.4 | 60.0 | 49.6 | 90.0 |
| Year Highest Occurred | 1986 | 1991 | 1994 | 1987 | 1992 | 1987 | 1996 | 1998 | 1974 | 1988 | 1976 | 1976 | 1998 |
| Lowest Mean Max. Temperature (F) | 30.0 | 37.1 | 43.7 | 48.5 | 57.5 | 70.3 | 79.6 | 76.5 | 67.5 | 56.6 | 38.2 | 33.7 | 30.0 |
| Year Lowest Occurred | 1977 | 1989 | 1991 | 1975 | 1977 | 1980 | 1983 | 1976 | 1985 | 1984 | 1994 | 1972 | 1977 |
| Mean Temperature (F) | 30.5 | 34.2 | 39.1 | 44.1 | 51.6 | 59.4 | 66.1 | 64.8 | 57.2 | 47.7 | 36.3 | 30.1 | 46.8 |
| Highest Mean Temperature (F) | 38.0 | 41.7 | 44.5 | 50.1 | 58.8 | 63.8 | 69.7 | 68.2 | 61.2 | 52.6 | 43.1 | 36.4 | 69.7 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1990 | 1992 | 1987 | 1996 | 1971 | 1998 | 1987 | 1995 | 1995 | 1996 |
| Lowest Mean Temperature (F) | 14.6 | 23.5 | 33.3 | 37.1 | 45.2 | 55.0 | 60.9 | 58.9 | 52.0 | 43.5 | 27.8 | 22.1 | 14.6 |
| Year Lowest Occurred | 1977 | 1989 | 1977 | 1975 | 1977 | 1980 | 1993 | 1976 | 1985 | 1971 | 1994 | 1990 | 1977 |
| Mean Min. Temperature (F) | 20.2 | 22.4 | 27.0 | 30.4 | 36.1 | 42.4 | 46.6 | 44.4 | 37.1 | 29.2 | 23.1 | 18.7 | 31.5 |
| Highest Mean Min. Temperature (F) | 31.7 | 30.9 | 33.8 | 34.7 | 40.0 | 47.0 | 50.5 | 48.2 | 42.7 | 37.4 | 28.2 | 27.8 | 50.5 |
| Year Highest Occurred | 1995 | 1986 | 1993 | 1989 | 1993 | 1992 | 1985 | 1977 | 1998 | 1979 | 1999 | 1995 | 1985 |
| Lowest Mean Min. Temperature (F) | -0.8 | 9.9 | 18.6 | 25.5 | 32.9 | 36.7 | 41.8 | 41.3 | 34.9 | 25.0 | 14.4 | 7.5 | -0.8 |
| Year Lowest Occurred | 1977 | 1989 | 1976 | 1976 | 1977 | 1979 | 1993 | 1976 | 1988 | 1976 | 1993 | 1990 | 1977 |
| Mean Precipitation (in.) | 1.85 | 1.95 | 2.19 | 1.46 | 1.48 | 0.84 | 0.26 | 0.40 | 0.77 | 1.08 | 2.11 | 2.06 | 16.45 |
| Highest Precipitation (in.) | 5.82 | 7.01 | 7.26 | 4.49 | 5.66 | 3.38 | 1.14 | 1.73 | 3.13 | 3.89 | 7.78 | 7.78 | 7.78 |
| Year Highest Occurred | 1997 | 1986 | 1995 | 1995 | 1998 | 1995 | 1987 | 1976 | 1985 | 1979 | 1998 | 1996 | 1998 |
| Lowest Precipitation (in.) | 0.20 | 0.36 | 0.62 | 0.03 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.36 | 0.03 | 0.00 |
| Year Lowest Occurred | 1984 | 1991 | 1977 | 1977 | 1992 | 1974 | 1991 | 1998 | 1999 | 1988 | 1974 | 1976 | 1974 |
| Heating Degree Days (F) | 1071. | 864. | 805. | 628. | 417. | 193. | 63. | 76. | 245. | 537. | 861. | 1082. | 6842. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 24. | 96. | 68. | 10. | 0. | 0. | 0. | 199. |