| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 44.2 | 47.6 | 52.1 | 59.2 | 67.3 | 75.5 | 83.2 | 82.6 | 76.0 | 64.4 | 49.9 | 43.8 | 62.2 |
| Highest Mean Max. Temperature (F) | 50.2 | 58.6 | 59.2 | 68.6 | 77.5 | 80.7 | 88.5 | 87.0 | 83.7 | 74.2 | 58.7 | 51.6 | 88.5 |
| Year Highest Occurred | 1986 | 1995 | 1988 | 1987 | 1992 | 1985 | 1985 | 1998 | 1974 | 1987 | 1976 | 1976 | 1985 |
| Lowest Mean Max. Temperature (F) | 38.0 | 38.6 | 44.9 | 50.6 | 55.9 | 67.5 | 76.7 | 73.8 | 66.8 | 56.7 | 40.0 | 37.3 | 37.3 |
| Year Lowest Occurred | 1993 | 1998 | 1975 | 1975 | 1998 | 1980 | 1983 | 1976 | 1986 | 1984 | 1994 | 1971 | 1971 |
| Mean Temperature (F) | 35.3 | 38.2 | 41.2 | 46.3 | 53.2 | 60.2 | 66.1 | 65.1 | 59.5 | 50.5 | 39.9 | 34.8 | 49.2 |
| Highest Mean Temperature (F) | 41.4 | 44.4 | 45.9 | 52.5 | 60.8 | 65.2 | 70.0 | 67.8 | 64.3 | 57.4 | 46.5 | 38.7 | 70.0 |
| Year Highest Occurred | 1986 | 1995 | 1986 | 1987 | 1992 | 1986 | 1988 | 1971 | 1991 | 1987 | 1995 | 1980 | 1988 |
| Lowest Mean Temperature (F) | 30.5 | 32.7 | 37.2 | 39.5 | 45.9 | 53.9 | 60.1 | 59.9 | 53.4 | 45.6 | 32.8 | 28.3 | 28.3 |
| Year Lowest Occurred | 1993 | 1989 | 1991 | 1975 | 1977 | 1980 | 1983 | 1976 | 1986 | 1984 | 1994 | 1990 | 1990 |
| Mean Min. Temperature (F) | 26.4 | 28.7 | 30.3 | 33.3 | 39.0 | 44.9 | 48.9 | 47.5 | 42.9 | 36.6 | 29.9 | 25.8 | 36.2 |
| Highest Mean Min. Temperature (F) | 33.3 | 33.6 | 34.5 | 38.0 | 44.0 | 50.5 | 52.1 | 50.7 | 46.7 | 40.7 | 34.7 | 30.6 | 52.1 |
| Year Highest Occurred | 1995 | 1986 | 1993 | 1992 | 1992 | 1986 | 1988 | 1971 | 1998 | 1987 | 1999 | 1995 | 1988 |
| Lowest Mean Min. Temperature (F) | 20.7 | 22.2 | 26.8 | 28.4 | 33.9 | 40.2 | 43.6 | 43.8 | 39.1 | 34.5 | 24.4 | 16.7 | 16.7 |
| Year Lowest Occurred | 1979 | 1990 | 1988 | 1975 | 1977 | 1980 | 1983 | 1985 | 1978 | 1984 | 1978 | 1990 | 1990 |
| Mean Precipitation (in.) | 7.06 | 6.45 | 5.81 | 2.65 | 1.87 | 0.99 | 0.39 | 0.43 | 0.87 | 2.21 | 5.08 | 5.35 | 39.16 |
| Highest Precipitation (in.) | 27.48 | 21.80 | 18.86 | 6.05 | 9.30 | 3.56 | 1.69 | 2.55 | 3.84 | 7.71 | 17.22 | 22.32 | 27.48 |
| Year Highest Occurred | 1995 | 1998 | 1995 | 1978 | 1990 | 1997 | 1985 | 1976 | 1986 | 1989 | 1973 | 1996 | 1995 |
| Lowest Precipitation (in.) | 0.19 | 0.21 | 0.43 | 0.08 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.52 | 0.07 | 0.00 |
| Year Lowest Occurred | 1984 | 1971 | 1988 | 1985 | 1992 | 1973 | 1999 | 1995 | 1999 | 1978 | 1995 | 1989 | 1973 |
| Heating Degree Days (F) | 921. | 753. | 738. | 563. | 374. | 175. | 66. | 65. | 196. | 451. | 753. | 936. | 5991. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 7. | 31. | 100. | 66. | 29. | 2. | 0. | 0. | 235. |