| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 48.8 | 55.2 | 60.2 | 65.8 | 73.9 | 81.5 | 89.6 | 89.8 | 83.1 | 71.9 | 54.8 | 47.0 | 68.5 |
| Highest Mean Max. Temperature (F) | 54.0 | 62.9 | 66.6 | 72.9 | 83.6 | 88.3 | 96.1 | 94.9 | 91.5 | 82.0 | 61.4 | 51.9 | 96.1 |
| Year Highest Occurred | 1986 | 1995 | 1994 | 1987 | 1992 | 1987 | 1994 | 1977 | 1974 | 1988 | 1995 | 1995 | 1994 |
| Lowest Mean Max. Temperature (F) | 43.9 | 50.6 | 53.7 | 58.5 | 66.9 | 73.6 | 82.5 | 80.5 | 72.6 | 63.4 | 47.9 | 42.2 | 42.2 |
| Year Lowest Occurred | 1982 | 1999 | 1971 | 1975 | 1998 | 1980 | 1983 | 1976 | 1978 | 1984 | 1994 | 1990 | 1990 |
| Mean Temperature (F) | 39.2 | 43.4 | 46.9 | 51.0 | 57.3 | 63.6 | 69.5 | 69.4 | 63.4 | 54.8 | 44.0 | 38.3 | 53.4 |
| Highest Mean Temperature (F) | 44.2 | 48.8 | 51.2 | 56.5 | 63.6 | 67.9 | 74.4 | 73.5 | 67.4 | 61.6 | 49.8 | 43.7 | 74.4 |
| Year Highest Occurred | 1986 | 1995 | 1986 | 1990 | 1992 | 1987 | 1996 | 1977 | 1974 | 1988 | 1995 | 1995 | 1996 |
| Lowest Mean Temperature (F) | 35.2 | 37.6 | 43.0 | 44.6 | 52.3 | 58.8 | 64.3 | 64.6 | 57.9 | 50.8 | 38.3 | 32.3 | 32.3 |
| Year Lowest Occurred | 1977 | 1989 | 1971 | 1975 | 1977 | 1980 | 1993 | 1975 | 1986 | 1971 | 1985 | 1990 | 1990 |
| Mean Min. Temperature (F) | 29.6 | 31.6 | 33.6 | 36.2 | 40.6 | 45.7 | 49.3 | 48.9 | 43.6 | 37.7 | 33.2 | 29.6 | 38.3 |
| Highest Mean Min. Temperature (F) | 35.4 | 36.2 | 38.2 | 40.7 | 44.2 | 49.6 | 54.0 | 53.6 | 46.5 | 43.8 | 38.3 | 35.5 | 54.0 |
| Year Highest Occurred | 1995 | 1996 | 1993 | 1990 | 1997 | 1986 | 1998 | 1997 | 1990 | 1979 | 1999 | 1995 | 1998 |
| Lowest Mean Min. Temperature (F) | 23.6 | 24.5 | 29.4 | 30.6 | 37.4 | 41.8 | 44.9 | 44.0 | 41.0 | 34.2 | 25.5 | 22.3 | 22.3 |
| Year Lowest Occurred | 1977 | 1989 | 1976 | 1975 | 1977 | 1976 | 1993 | 1980 | 1971 | 1974 | 1993 | 1976 | 1976 |
| Mean Precipitation (in.) | 3.79 | 3.10 | 3.05 | 1.80 | 1.27 | 0.76 | 0.49 | 0.53 | 0.97 | 1.70 | 3.98 | 4.30 | 25.74 |
| Highest Precipitation (in.) | 8.56 | 7.04 | 8.14 | 3.63 | 2.89 | 2.56 | 1.90 | 2.84 | 4.37 | 5.75 | 10.40 | 16.18 | 16.18 |
| Year Highest Occurred | 1974 | 1983 | 1975 | 1995 | 1993 | 1982 | 1987 | 1976 | 1977 | 1979 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.17 | 0.22 | 0.45 | 0.34 | 0.07 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.72 | 0.55 | 0.00 |
| Year Lowest Occurred | 1984 | 1988 | 1994 | 1985 | 1982 | 1998 | 1998 | 1998 | 1999 | 1987 | 1976 | 1976 | 1998 |
| Heating Degree Days (F) | 799. | 605. | 560. | 422. | 251. | 99. | 25. | 23. | 117. | 323. | 629. | 828. | 4681. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 10. | 57. | 163. | 157. | 68. | 7. | 0. | 0. | 463. |