| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 49.1 | 53.8 | 58.7 | 63.7 | 70.1 | 76.3 | 83.3 | 84.4 | 80.1 | 67.8 | 54.2 | 48.0 | 65.8 |
| Highest Mean Max. Temperature (F) | 53.7 | 59.0 | 66.5 | 69.6 | 82.2 | 81.5 | 89.8 | 89.1 | 90.6 | 75.5 | 58.5 | 52.4 | 90.6 |
| Year Highest Occurred | 1994 | 1992 | 1992 | 1987 | 1992 | 1986 | 1996 | 1986 | 1974 | 1987 | 1976 | 1977 | 1974 |
| Lowest Mean Max. Temperature (F) | 42.4 | 46.6 | 53.5 | 57.2 | 63.0 | 70.2 | 76.7 | 78.9 | 73.0 | 61.6 | 47.3 | 40.9 | 40.9 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1998 | 1991 | 1983 | 1989 | 1978 | 1997 | 1985 | 1990 | 1990 |
| Mean Temperature (F) | 42.5 | 45.7 | 48.8 | 52.1 | 57.2 | 62.2 | 67.3 | 67.8 | 64.1 | 55.9 | 47.4 | 42.2 | 54.4 |
| Highest Mean Temperature (F) | 46.0 | 50.3 | 54.4 | 57.3 | 64.3 | 66.1 | 71.7 | 71.9 | 69.8 | 60.3 | 51.6 | 46.6 | 71.9 |
| Year Highest Occurred | 1998 | 1995 | 1992 | 1992 | 1992 | 1986 | 1996 | 1998 | 1974 | 1988 | 1995 | 1977 | 1998 |
| Lowest Mean Temperature (F) | 35.6 | 37.6 | 44.5 | 46.1 | 53.8 | 58.4 | 63.5 | 64.7 | 60.1 | 52.8 | 40.9 | 34.9 | 34.9 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1999 | 1971 | 1989 | 1973 | 1985 | 1971 | 1985 | 1990 | 1990 |
| Mean Min. Temperature (F) | 35.9 | 37.6 | 38.9 | 40.5 | 44.3 | 48.0 | 51.2 | 51.1 | 48.0 | 44.0 | 40.6 | 36.3 | 43.0 |
| Highest Mean Min. Temperature (F) | 40.3 | 42.6 | 43.8 | 46.0 | 48.1 | 50.8 | 54.9 | 55.6 | 52.1 | 48.6 | 45.6 | 40.8 | 55.6 |
| Year Highest Occurred | 1978 | 1991 | 1993 | 1992 | 1993 | 1986 | 1998 | 1998 | 1995 | 1988 | 1995 | 1977 | 1998 |
| Lowest Mean Min. Temperature (F) | 28.7 | 28.6 | 34.8 | 34.9 | 40.4 | 44.1 | 48.4 | 47.4 | 42.9 | 38.9 | 32.9 | 28.9 | 28.6 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1982 | 1976 | 1977 | 1988 | 1999 | 1974 | 1993 | 1990 | 1989 |
| Mean Precipitation (in.) | 8.09 | 6.97 | 6.05 | 3.92 | 2.42 | 1.10 | 0.35 | 0.68 | 1.45 | 3.29 | 8.89 | 9.29 | 52.50 |
| Highest Precipitation (in.) | 16.09 | 16.10 | 12.48 | 8.34 | 5.94 | 2.74 | 1.46 | 2.31 | 5.04 | 12.58 | 21.38 | 19.78 | 21.38 |
| Year Highest Occurred | 1995 | 1999 | 1983 | 1982 | 1998 | 1981 | 1987 | 1976 | 1971 | 1975 | 1984 | 1981 | 1984 |
| Lowest Precipitation (in.) | 0.59 | 0.74 | 1.73 | 1.47 | 0.00 | 0.07 | 0.00 | 0.00 | 0.00 | 0.00 | 1.55 | 1.51 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1992 | 1985 | 1992 | 1987 | 1994 | 2000 | 1999 | 1978 | 1976 | 1976 | 1992 |
| Heating Degree Days (F) | 698. | 540. | 503. | 387. | 250. | 114. | 39. | 21. | 92. | 286. | 528. | 708. | 4166. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 8. | 29. | 109. | 106. | 62. | 4. | 0. | 0. | 319. |