| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 38.9 | 41.5 | 46.5 | 52.7 | 61.6 | 72.5 | 79.6 | 78.5 | 69.9 | 59.1 | 46.3 | 40.6 | 57.3 |
| Highest Mean Max. Temperature (F) | 48.1 | 47.6 | 53.9 | 60.4 | 68.1 | 79.3 | 82.6 | 85.5 | 75.6 | 63.9 | 58.7 | 51.0 | 85.5 |
| Year Highest Occurred | 1986 | 1999 | 1986 | 1981 | 1994 | 1988 | 1980 | 1995 | 1998 | 1992 | 1999 | 1980 | 1995 |
| Lowest Mean Max. Temperature (F) | 27.6 | 30.6 | 39.9 | 43.8 | 53.2 | 66.5 | 74.8 | 73.5 | 63.7 | 52.3 | 38.6 | 28.0 | 27.6 |
| Year Lowest Occurred | 1979 | 1989 | 1973 | 1983 | 1995 | 1998 | 1992 | 1997 | 1973 | 1984 | 1972 | 1983 | 1979 |
| Mean Temperature (F) | 28.0 | 29.9 | 35.3 | 40.8 | 49.9 | 59.8 | 66.7 | 66.1 | 57.3 | 46.9 | 35.2 | 29.7 | 45.5 |
| Highest Mean Temperature (F) | 36.9 | 36.4 | 42.2 | 47.1 | 55.2 | 65.3 | 69.6 | 71.3 | 63.9 | 51.6 | 46.3 | 38.5 | 71.3 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1981 | 1994 | 1988 | 2000 | 1995 | 1998 | 1988 | 1999 | 1980 | 1995 |
| Lowest Mean Temperature (F) | 16.3 | 19.0 | 31.3 | 33.8 | 43.6 | 55.0 | 62.6 | 63.0 | 52.8 | 41.9 | 28.0 | 17.8 | 16.3 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1983 | 1995 | 1998 | 1992 | 1974 | 1971 | 1984 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 17.1 | 18.3 | 24.0 | 28.8 | 38.2 | 47.0 | 53.8 | 53.6 | 44.7 | 34.6 | 24.0 | 18.8 | 33.6 |
| Highest Mean Min. Temperature (F) | 25.6 | 26.4 | 30.4 | 34.3 | 42.9 | 51.8 | 57.2 | 58.6 | 52.1 | 39.3 | 33.8 | 26.0 | 58.6 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1992 | 2000 | 1990 | 2000 | 1983 | 1998 | 1988 | 1999 | 1980 | 1983 |
| Lowest Mean Min. Temperature (F) | 5.0 | 7.3 | 19.5 | 23.5 | 33.9 | 43.5 | 49.7 | 49.8 | 40.1 | 30.4 | 17.3 | 7.5 | 5.0 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1997 | 1995 | 1998 | 1993 | 1974 | 1974 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.87 | 0.57 | 2.05 | 2.86 | 3.37 | 2.50 | 2.48 | 2.08 | 2.03 | 1.07 | 1.18 | 0.56 | 21.62 |
| Highest Precipitation (in.) | 2.80 | 1.36 | 7.01 | 9.26 | 9.23 | 5.25 | 4.51 | 4.89 | 4.34 | 2.59 | 2.97 | 1.48 | 9.26 |
| Year Highest Occurred | 1980 | 1987 | 1990 | 1999 | 1995 | 1995 | 1991 | 1997 | 1995 | 1997 | 1983 | 1988 | 1999 |
| Lowest Precipitation (in.) | 0.21 | 0.01 | 0.68 | 0.94 | 0.73 | 0.37 | 1.13 | 0.45 | 0.01 | 0.13 | 0.39 | 0.04 | 0.01 |
| Year Lowest Occurred | 1995 | 1999 | 1999 | 1987 | 1974 | 1990 | 1999 | 1973 | 1992 | 1992 | 1981 | 1991 | 1999 |
| Heating Degree Days (F) | 1148. | 983. | 922. | 727. | 469. | 187. | 40. | 56. | 252. | 563. | 895. | 1095. | 7337. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 30. | 92. | 88. | 20. | 0. | 0. | 0. | 231. |