| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 36.9 | 41.4 | 46.5 | 53.1 | 62.0 | 70.5 | 79.2 | 79.5 | 72.9 | 61.0 | 42.9 | 36.0 | 56.8 |
| Highest Mean Max. Temperature (F) | 43.1 | 49.1 | 53.7 | 63.9 | 72.4 | 76.9 | 84.6 | 85.0 | 81.6 | 71.6 | 52.8 | 43.2 | 85.0 |
| Year Highest Occurred | 1981 | 1977 | 1978 | 1987 | 1992 | 1986 | 1994 | 1986 | 1974 | 1988 | 1976 | 1976 | 1986 |
| Lowest Mean Max. Temperature (F) | 31.8 | 34.4 | 40.8 | 45.3 | 50.5 | 64.0 | 71.6 | 71.1 | 64.4 | 50.5 | 33.5 | 30.0 | 30.0 |
| Year Lowest Occurred | 1993 | 1989 | 1991 | 1975 | 1998 | 1980 | 1983 | 1976 | 1986 | 1984 | 1994 | 1990 | 1990 |
| Mean Temperature (F) | 29.1 | 32.0 | 35.8 | 41.0 | 48.2 | 55.5 | 62.3 | 62.1 | 55.8 | 47.0 | 35.2 | 29.3 | 44.4 |
| Highest Mean Temperature (F) | 35.3 | 38.4 | 41.2 | 47.3 | 55.8 | 60.8 | 66.2 | 66.5 | 60.4 | 54.1 | 41.3 | 33.7 | 66.5 |
| Year Highest Occurred | 1981 | 1991 | 1986 | 1987 | 1992 | 1986 | 1998 | 1986 | 1991 | 1987 | 1976 | 1981 | 1986 |
| Lowest Mean Temperature (F) | 24.8 | 24.4 | 30.5 | 32.3 | 42.7 | 50.9 | 56.3 | 57.1 | 50.4 | 41.0 | 27.8 | 22.0 | 22.0 |
| Year Lowest Occurred | 1993 | 1989 | 1975 | 1975 | 1977 | 1980 | 1993 | 1976 | 1986 | 1984 | 1994 | 1990 | 1990 |
| Mean Min. Temperature (F) | 21.2 | 22.5 | 25.0 | 28.9 | 34.3 | 40.4 | 45.3 | 44.6 | 38.7 | 33.0 | 27.4 | 22.6 | 32.0 |
| Highest Mean Min. Temperature (F) | 28.6 | 28.8 | 29.9 | 35.0 | 39.3 | 44.7 | 49.9 | 47.9 | 42.7 | 37.9 | 32.4 | 29.0 | 49.9 |
| Year Highest Occurred | 1998 | 1992 | 1992 | 1992 | 1992 | 1992 | 1998 | 1986 | 1998 | 1979 | 1999 | 1981 | 1998 |
| Lowest Mean Min. Temperature (F) | 14.6 | 14.3 | 19.1 | 19.3 | 29.1 | 35.8 | 40.6 | 38.8 | 36.0 | 29.1 | 19.7 | 13.9 | 13.9 |
| Year Lowest Occurred | 1975 | 1989 | 1985 | 1975 | 1975 | 1975 | 1993 | 1975 | 1996 | 1974 | 1985 | 1990 | 1990 |
| Mean Precipitation (in.) | 4.85 | 3.86 | 3.72 | 2.39 | 2.06 | 1.28 | 0.58 | 0.72 | 1.07 | 2.04 | 4.79 | 5.21 | 32.57 |
| Highest Precipitation (in.) | 10.57 | 9.18 | 7.86 | 4.74 | 4.96 | 3.40 | 4.21 | 4.27 | 3.31 | 5.15 | 11.06 | 13.38 | 13.38 |
| Year Highest Occurred | 1996 | 1986 | 1995 | 1995 | 1998 | 1995 | 1987 | 1976 | 1986 | 1975 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.45 | 0.31 | 0.82 | 0.50 | 0.23 | 0.01 | 0.00 | 0.00 | 0.00 | 0.07 | 0.58 | 0.62 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1994 | 1977 | 1976 | 1999 | 1999 | 2000 | 1999 | 1988 | 1993 | 1976 | 1999 |
| Heating Degree Days (F) | 1115. | 926. | 908. | 720. | 522. | 296. | 133. | 133. | 285. | 558. | 896. | 1106. | 7598. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 9. | 47. | 41. | 10. | 0. | 0. | 0. | 107. |