| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 47.4 | 53.3 | 58.8 | 65.2 | 74.6 | 83.4 | 91.1 | 90.5 | 84.3 | 73.3 | 56.5 | 46.6 | 68.8 |
| Highest Mean Max. Temperature (F) | 54.7 | 67.0 | 67.5 | 77.0 | 88.0 | 89.8 | 98.1 | 95.8 | 93.6 | 84.3 | 67.5 | 54.8 | 98.1 |
| Year Highest Occurred | 1991 | 1991 | 1994 | 1987 | 1992 | 1987 | 1994 | 1992 | 1991 | 1988 | 1995 | 1976 | 1994 |
| Lowest Mean Max. Temperature (F) | 39.6 | 44.8 | 51.4 | 55.0 | 63.5 | 76.2 | 84.0 | 80.7 | 75.0 | 65.7 | 49.2 | 39.7 | 39.6 |
| Year Lowest Occurred | 1972 | 1998 | 1983 | 1975 | 1998 | 1998 | 1983 | 1976 | 1986 | 1984 | 1994 | 1971 | 1972 |
| Mean Temperature (F) | 35.8 | 40.0 | 44.1 | 48.2 | 55.7 | 62.6 | 67.7 | 66.5 | 60.9 | 52.3 | 42.4 | 35.1 | 50.9 |
| Highest Mean Temperature (F) | 39.9 | 47.9 | 48.9 | 53.9 | 66.2 | 66.8 | 74.3 | 72.2 | 68.3 | 58.7 | 50.0 | 41.7 | 74.3 |
| Year Highest Occurred | 1986 | 1991 | 1994 | 1992 | 1992 | 1977 | 1994 | 1992 | 1991 | 1991 | 1995 | 1995 | 1994 |
| Lowest Mean Temperature (F) | 26.2 | 34.0 | 37.0 | 40.5 | 48.7 | 57.8 | 61.9 | 60.1 | 55.1 | 47.1 | 37.8 | 28.3 | 26.2 |
| Year Lowest Occurred | 1972 | 1989 | 1977 | 1975 | 1977 | 1980 | 1983 | 1976 | 1978 | 1971 | 1994 | 1990 | 1972 |
| Mean Min. Temperature (F) | 24.1 | 26.6 | 29.3 | 31.2 | 36.7 | 41.7 | 44.2 | 42.4 | 37.5 | 31.2 | 28.2 | 23.5 | 33.1 |
| Highest Mean Min. Temperature (F) | 32.5 | 33.0 | 33.7 | 34.8 | 44.3 | 46.6 | 50.4 | 48.8 | 43.0 | 38.9 | 33.1 | 32.0 | 50.4 |
| Year Highest Occurred | 1998 | 2000 | 1983 | 1992 | 1992 | 1992 | 1994 | 1990 | 1991 | 1993 | 1997 | 1995 | 1994 |
| Lowest Mean Min. Temperature (F) | 12.7 | 19.8 | 20.5 | 25.9 | 30.3 | 36.1 | 38.1 | 35.6 | 31.3 | 26.6 | 24.5 | 12.0 | 12.0 |
| Year Lowest Occurred | 1972 | 1989 | 1977 | 1975 | 1978 | 1984 | 1989 | 1986 | 1988 | 1985 | 1993 | 1976 | 1976 |
| Mean Precipitation (in.) | 6.77 | 6.75 | 5.59 | 2.53 | 1.53 | 0.71 | 0.24 | 0.27 | 0.84 | 2.55 | 4.90 | 5.64 | 38.32 |
| Highest Precipitation (in.) | 19.15 | 20.18 | 17.87 | 10.65 | 4.91 | 2.68 | 1.89 | 1.22 | 5.51 | 8.11 | 18.70 | 20.57 | 20.57 |
| Year Highest Occurred | 1978 | 1986 | 1995 | 1982 | 1996 | 1995 | 1974 | 1976 | 1986 | 1981 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.41 | 0.22 | 0.57 | 0.07 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 |
| Year Lowest Occurred | 1991 | 1971 | 1988 | 1985 | 1982 | 1994 | 2000 | 2000 | 1999 | 1995 | 1992 | 1989 | 1994 |
| Heating Degree Days (F) | 907. | 702. | 650. | 505. | 308. | 119. | 47. | 65. | 175. | 405. | 679. | 928. | 5490. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 18. | 46. | 129. | 109. | 52. | 9. | 0. | 0. | 364. |