| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 31.0 | 37.1 | 47.3 | 57.9 | 66.9 | 76.3 | 85.0 | 85.1 | 74.7 | 62.0 | 44.2 | 32.9 | 58.4 |
| Highest Mean Max. Temperature (F) | 40.1 | 49.5 | 58.7 | 68.2 | 75.9 | 83.9 | 90.0 | 90.2 | 82.7 | 72.1 | 55.6 | 39.1 | 90.2 |
| Year Highest Occurred | 1994 | 1992 | 1992 | 1987 | 1992 | 1988 | 1998 | 2000 | 1990 | 1988 | 1999 | 1976 | 2000 |
| Lowest Mean Max. Temperature (F) | 19.1 | 25.6 | 35.2 | 46.5 | 60.5 | 70.0 | 74.8 | 79.5 | 66.9 | 54.6 | 34.9 | 19.7 | 19.1 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1975 | 1975 | 1998 | 1993 | 1976 | 1986 | 1971 | 1985 | 1985 | 1979 |
| Mean Temperature (F) | 21.4 | 26.7 | 35.9 | 44.0 | 52.5 | 60.6 | 67.1 | 65.9 | 56.2 | 45.3 | 32.5 | 22.6 | 44.2 |
| Highest Mean Temperature (F) | 30.7 | 35.2 | 43.0 | 49.8 | 58.5 | 66.0 | 71.6 | 70.2 | 63.0 | 52.8 | 39.6 | 30.3 | 71.6 |
| Year Highest Occurred | 1998 | 1992 | 1986 | 1987 | 1992 | 1988 | 1998 | 1994 | 1990 | 1988 | 1995 | 1975 | 1998 |
| Lowest Mean Temperature (F) | 8.2 | 11.8 | 26.3 | 36.4 | 48.2 | 56.7 | 59.5 | 62.1 | 50.9 | 41.7 | 23.4 | 8.7 | 8.2 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1975 | 1975 | 1998 | 1993 | 1993 | 1986 | 1984 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 11.7 | 16.3 | 24.5 | 30.1 | 38.1 | 44.8 | 49.1 | 46.7 | 37.7 | 28.5 | 20.8 | 12.2 | 30.0 |
| Highest Mean Min. Temperature (F) | 23.2 | 24.9 | 29.2 | 32.7 | 41.8 | 49.2 | 53.8 | 51.8 | 45.8 | 33.6 | 27.4 | 22.5 | 53.8 |
| Year Highest Occurred | 1998 | 1980 | 1986 | 1990 | 1987 | 1977 | 1975 | 1983 | 1998 | 1988 | 1995 | 1977 | 1975 |
| Lowest Mean Min. Temperature (F) | -2.7 | -2.1 | 17.3 | 26.3 | 35.5 | 42.6 | 44.1 | 42.3 | 33.8 | 24.5 | 11.1 | -2.2 | -2.7 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1975 | 1990 | 2000 | 1993 | 1985 | 1993 | 1985 | 1993 | 1985 | 1979 |
| Mean Precipitation (in.) | 0.74 | 0.72 | 0.86 | 0.75 | 1.12 | 0.92 | 0.56 | 0.53 | 0.77 | 0.84 | 0.73 | 0.70 | 9.24 |
| Highest Precipitation (in.) | 2.00 | 2.64 | 2.71 | 2.20 | 3.11 | 4.56 | 2.64 | 1.83 | 2.41 | 2.17 | 2.27 | 3.06 | 4.56 |
| Year Highest Occurred | 1998 | 1986 | 1995 | 1976 | 1980 | 1995 | 1984 | 1976 | 1998 | 1975 | 1988 | 1996 | 1995 |
| Lowest Precipitation (in.) | 0.05 | 0.04 | 0.00 | 0.00 | 0.01 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.00 |
| Year Lowest Occurred | 1992 | 1990 | 1994 | 1987 | 1992 | 2000 | 1999 | 1996 | 1987 | 1988 | 1976 | 1991 | 1994 |
| Heating Degree Days (F) | 1352. | 1074. | 902. | 631. | 389. | 165. | 53. | 64. | 281. | 613. | 976. | 1317. | 7817. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 31. | 116. | 92. | 16. | 0. | 0. | 0. | 256. |