| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 41.5 | 46.6 | 52.2 | 59.9 | 68.9 | 78.4 | 87.4 | 86.6 | 78.1 | 65.6 | 49.0 | 41.7 | 63.0 |
| Highest Mean Max. Temperature (F) | 48.3 | 56.3 | 58.4 | 68.4 | 79.3 | 84.5 | 92.4 | 91.6 | 85.1 | 76.0 | 58.6 | 47.2 | 92.4 |
| Year Highest Occurred | 1986 | 1991 | 1978 | 1987 | 1992 | 1974 | 1994 | 1971 | 1974 | 1988 | 1976 | 1979 | 1994 |
| Lowest Mean Max. Temperature (F) | 33.5 | 36.3 | 44.8 | 51.0 | 59.9 | 73.0 | 77.7 | 77.6 | 67.7 | 56.5 | 40.8 | 36.6 | 33.5 |
| Year Lowest Occurred | 1985 | 1993 | 1971 | 1975 | 1977 | 1980 | 1993 | 1976 | 1986 | 1984 | 1985 | 1990 | 1985 |
| Mean Temperature (F) | 32.6 | 36.6 | 41.0 | 46.6 | 54.3 | 62.3 | 69.3 | 68.2 | 60.5 | 50.3 | 39.0 | 32.9 | 49.5 |
| Highest Mean Temperature (F) | 39.9 | 43.0 | 45.7 | 52.9 | 61.6 | 66.8 | 73.0 | 72.5 | 64.7 | 57.0 | 45.5 | 37.8 | 73.0 |
| Year Highest Occurred | 1986 | 1995 | 1978 | 1990 | 1992 | 1974 | 1994 | 1971 | 1998 | 1988 | 1999 | 1981 | 1994 |
| Lowest Mean Temperature (F) | 24.7 | 26.1 | 34.6 | 39.5 | 48.0 | 58.3 | 61.6 | 62.7 | 53.6 | 45.6 | 31.7 | 26.3 | 24.7 |
| Year Lowest Occurred | 1993 | 1989 | 1971 | 1975 | 1977 | 1980 | 1993 | 1976 | 1986 | 1984 | 1985 | 1990 | 1993 |
| Mean Min. Temperature (F) | 23.7 | 26.6 | 29.7 | 33.3 | 39.7 | 46.2 | 51.2 | 49.8 | 42.8 | 35.0 | 29.0 | 24.0 | 35.9 |
| Highest Mean Min. Temperature (F) | 31.5 | 32.1 | 34.1 | 38.9 | 44.4 | 51.2 | 54.9 | 54.4 | 47.3 | 39.1 | 34.7 | 31.0 | 54.9 |
| Year Highest Occurred | 1986 | 1980 | 1993 | 1990 | 1997 | 1992 | 1998 | 1977 | 1998 | 1979 | 1999 | 1973 | 1998 |
| Lowest Mean Min. Temperature (F) | 13.2 | 14.6 | 24.2 | 28.1 | 36.0 | 43.0 | 45.4 | 45.4 | 39.4 | 31.6 | 20.4 | 15.9 | 13.2 |
| Year Lowest Occurred | 1977 | 1989 | 1976 | 1975 | 1975 | 1991 | 1993 | 1980 | 1985 | 1974 | 1993 | 1990 | 1977 |
| Mean Precipitation (in.) | 1.56 | 1.25 | 1.14 | 0.99 | 1.17 | 0.86 | 0.55 | 0.53 | 0.61 | 0.79 | 1.67 | 1.66 | 12.78 |
| Highest Precipitation (in.) | 4.07 | 4.31 | 3.38 | 2.69 | 3.61 | 2.08 | 3.87 | 2.58 | 2.12 | 2.14 | 5.80 | 5.17 | 5.80 |
| Year Highest Occurred | 1997 | 1986 | 1983 | 1978 | 1998 | 1987 | 1987 | 1976 | 1977 | 2000 | 1988 | 1996 | 1988 |
| Lowest Precipitation (in.) | 0.11 | 0.15 | 0.11 | 0.03 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.06 | 0.04 | 0.00 |
| Year Lowest Occurred | 1991 | 1990 | 1977 | 1977 | 1992 | 1973 | 1989 | 2000 | 1987 | 1988 | 1976 | 1976 | 1973 |
| Heating Degree Days (F) | 1005. | 795. | 746. | 553. | 339. | 134. | 37. | 37. | 182. | 456. | 781. | 997. | 6062. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 7. | 52. | 171. | 136. | 45. | 1. | 0. | 0. | 412. |