| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 37.5 | 41.5 | 48.1 | 55.8 | 63.6 | 69.4 | 76.3 | 77.1 | 69.6 | 57.1 | 43.7 | 38.0 | 56.5 |
| Highest Mean Max. Temperature (F) | 43.9 | 47.7 | 58.2 | 60.1 | 70.3 | 76.7 | 86.5 | 85.1 | 77.2 | 63.7 | 48.7 | 43.3 | 86.5 |
| Year Highest Occurred | 1981 | 1977 | 1992 | 1980 | 1992 | 1992 | 1985 | 1986 | 1998 | 1987 | 1987 | 1976 | 1985 |
| Lowest Mean Max. Temperature (F) | 29.8 | 33.8 | 41.7 | 50.2 | 57.1 | 62.3 | 67.1 | 69.5 | 61.1 | 51.1 | 32.8 | 31.5 | 29.8 |
| Year Lowest Occurred | 1993 | 1989 | 1971 | 1972 | 1984 | 1981 | 1993 | 1976 | 1978 | 1990 | 1985 | 1990 | 1993 |
| Mean Temperature (F) | 32.9 | 35.7 | 40.6 | 46.6 | 53.6 | 59.3 | 65.1 | 66.1 | 59.7 | 49.8 | 39.3 | 33.8 | 48.5 |
| Highest Mean Temperature (F) | 39.6 | 40.5 | 48.1 | 50.3 | 58.9 | 65.4 | 71.0 | 71.5 | 65.1 | 54.2 | 44.2 | 38.6 | 71.5 |
| Year Highest Occurred | 1994 | 1977 | 1992 | 1994 | 1993 | 1992 | 1985 | 1986 | 1995 | 1987 | 1987 | 1976 | 1986 |
| Lowest Mean Temperature (F) | 25.4 | 27.4 | 35.6 | 42.2 | 48.6 | 54.4 | 60.0 | 60.5 | 54.9 | 45.3 | 29.3 | 26.8 | 25.4 |
| Year Lowest Occurred | 1993 | 1989 | 1971 | 1982 | 1984 | 1981 | 1993 | 1995 | 1972 | 1990 | 1985 | 1983 | 1993 |
| Mean Min. Temperature (F) | 28.2 | 29.8 | 33.0 | 37.3 | 43.5 | 49.2 | 53.8 | 55.0 | 49.8 | 42.4 | 34.9 | 29.6 | 40.5 |
| Highest Mean Min. Temperature (F) | 36.4 | 34.9 | 37.9 | 41.5 | 48.8 | 54.1 | 58.3 | 58.5 | 53.4 | 46.0 | 39.7 | 35.0 | 58.5 |
| Year Highest Occurred | 1994 | 1992 | 1992 | 1994 | 1993 | 1992 | 1998 | 1977 | 1995 | 1988 | 1987 | 1989 | 1977 |
| Lowest Mean Min. Temperature (F) | 20.2 | 21.0 | 29.1 | 32.6 | 40.0 | 46.2 | 51.0 | 50.9 | 46.0 | 39.4 | 25.7 | 21.8 | 20.2 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1982 | 1999 | 1976 | 1976 | 1995 | 1983 | 1990 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 8.84 | 6.47 | 5.14 | 3.01 | 2.15 | 1.65 | 1.39 | 1.22 | 2.19 | 5.23 | 10.51 | 9.64 | 57.44 |
| Highest Precipitation (in.) | 17.98 | 13.45 | 12.53 | 7.22 | 5.32 | 4.01 | 4.54 | 3.50 | 6.43 | 12.55 | 28.41 | 18.60 | 28.41 |
| Year Highest Occurred | 1974 | 1972 | 1997 | 1981 | 1984 | 1997 | 1983 | 1990 | 1972 | 1990 | 1995 | 1975 | 1995 |
| Lowest Precipitation (in.) | 0.60 | 0.42 | 0.29 | 0.27 | 0.35 | 0.56 | 0.05 | 0.01 | 0.21 | 0.23 | 1.24 | 1.26 | 0.01 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1999 | 1992 | 1996 | 1984 | 1986 | 1989 | 1987 | 1979 | 1985 | 1986 |
| Heating Degree Days (F) | 997. | 821. | 758. | 554. | 359. | 194. | 88. | 76. | 201. | 475. | 771. | 968. | 6262. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 4. | 23. | 88. | 109. | 41. | 1. | 0. | 0. | 266. |