| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 32.8 | 38.9 | 47.9 | 57.0 | 65.4 | 71.8 | 79.4 | 79.9 | 72.1 | 58.3 | 39.8 | 31.5 | 56.2 |
| Highest Mean Max. Temperature (F) | 42.1 | 45.6 | 58.6 | 62.2 | 72.7 | 80.0 | 88.0 | 86.9 | 80.6 | 65.3 | 44.5 | 36.8 | 88.0 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 2000 | 1992 | 1992 | 1985 | 1981 | 1998 | 1987 | 1987 | 1991 | 1985 |
| Lowest Mean Max. Temperature (F) | 24.4 | 32.3 | 41.0 | 50.0 | 59.4 | 66.2 | 71.6 | 72.9 | 64.1 | 51.8 | 31.0 | 24.8 | 24.4 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1996 | 1981 | 1993 | 1975 | 1986 | 1990 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 26.4 | 30.9 | 37.4 | 44.2 | 51.7 | 57.9 | 63.7 | 63.9 | 56.2 | 45.4 | 33.8 | 26.3 | 44.8 |
| Highest Mean Temperature (F) | 34.6 | 36.7 | 44.3 | 48.3 | 57.7 | 64.3 | 69.5 | 68.0 | 62.2 | 50.8 | 38.4 | 32.2 | 69.5 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 1994 | 1993 | 1992 | 1998 | 1981 | 1998 | 1988 | 1999 | 1991 | 1998 |
| Lowest Mean Temperature (F) | 14.2 | 22.4 | 31.7 | 38.9 | 47.5 | 53.4 | 58.6 | 59.0 | 50.9 | 42.0 | 23.7 | 18.0 | 14.2 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1984 | 1976 | 1993 | 1995 | 1971 | 1990 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 20.0 | 22.9 | 26.9 | 31.3 | 37.9 | 43.9 | 47.9 | 47.9 | 40.2 | 32.5 | 27.7 | 21.0 | 33.3 |
| Highest Mean Min. Temperature (F) | 29.1 | 29.9 | 29.9 | 35.9 | 43.0 | 48.6 | 53.9 | 51.0 | 43.9 | 37.1 | 33.0 | 27.5 | 53.9 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1994 | 1993 | 1992 | 1998 | 1990 | 1997 | 1988 | 1999 | 1999 | 1998 |
| Lowest Mean Min. Temperature (F) | 4.0 | 12.5 | 22.5 | 27.5 | 35.3 | 39.2 | 43.9 | 44.2 | 36.3 | 29.1 | 16.4 | 11.1 | 4.0 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1982 | 1974 | 1976 | 1972 | 1995 | 1971 | 1972 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 4.86 | 3.62 | 2.21 | 1.31 | 1.08 | 0.99 | 0.48 | 0.66 | 0.78 | 1.95 | 4.68 | 5.40 | 28.02 |
| Highest Precipitation (in.) | 10.94 | 8.99 | 5.75 | 3.06 | 3.52 | 2.85 | 1.57 | 2.25 | 1.78 | 5.82 | 12.24 | 10.89 | 12.24 |
| Year Highest Occurred | 1972 | 1972 | 1972 | 1996 | 1998 | 1992 | 1993 | 1990 | 1977 | 1994 | 1995 | 1977 | 1995 |
| Lowest Precipitation (in.) | 0.50 | 0.45 | 0.54 | 0.10 | 0.01 | 0.15 | 0.00 | 0.00 | 0.00 | 0.03 | 0.76 | 1.38 | 0.00 |
| Year Lowest Occurred | 1985 | 1993 | 1981 | 1999 | 1992 | 1976 | 1994 | 1996 | 1998 | 1987 | 1976 | 1985 | 1994 |
| Heating Degree Days (F) | 1197. | 955. | 855. | 626. | 415. | 226. | 106. | 97. | 280. | 607. | 937. | 1201. | 7502. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 13. | 64. | 62. | 15. | 0. | 0. | 0. | 155. |