| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 53.3 | 55.8 | 59.1 | 65.6 | 74.1 | 83.4 | 90.3 | 90.2 | 84.6 | 74.1 | 58.9 | 52.9 | 70.2 |
| Highest Mean Max. Temperature (F) | 59.8 | 65.7 | 67.2 | 74.3 | 82.9 | 88.4 | 95.5 | 94.4 | 91.7 | 82.0 | 70.3 | 61.9 | 95.5 |
| Year Highest Occurred | 1984 | 1988 | 1988 | 1987 | 1992 | 1977 | 1988 | 1986 | 1991 | 1978 | 1976 | 1989 | 1988 |
| Lowest Mean Max. Temperature (F) | 47.2 | 46.8 | 51.1 | 57.0 | 60.5 | 76.2 | 84.2 | 82.9 | 75.3 | 66.3 | 49.9 | 45.2 | 45.2 |
| Year Lowest Occurred | 1973 | 1998 | 1983 | 1983 | 1998 | 1998 | 1987 | 1976 | 1986 | 1984 | 1973 | 1971 | 1971 |
| Mean Temperature (F) | 42.6 | 44.7 | 47.1 | 52.0 | 59.1 | 66.9 | 72.6 | 72.1 | 67.4 | 59.1 | 47.3 | 42.3 | 56.1 |
| Highest Mean Temperature (F) | 48.1 | 50.8 | 53.2 | 58.7 | 65.0 | 71.6 | 77.5 | 76.8 | 71.7 | 65.3 | 55.2 | 47.9 | 77.5 |
| Year Highest Occurred | 1986 | 1988 | 1997 | 1987 | 1997 | 1977 | 1996 | 1996 | 1975 | 1987 | 1976 | 1980 | 1996 |
| Lowest Mean Temperature (F) | 36.9 | 40.0 | 41.0 | 45.3 | 51.0 | 60.6 | 67.4 | 66.6 | 60.3 | 53.0 | 41.4 | 36.0 | 36.0 |
| Year Lowest Occurred | 1982 | 1989 | 1991 | 1975 | 1998 | 1980 | 1987 | 1976 | 1986 | 1981 | 1994 | 1971 | 1971 |
| Mean Min. Temperature (F) | 31.8 | 33.5 | 35.0 | 38.3 | 44.0 | 50.3 | 54.9 | 54.0 | 50.1 | 44.0 | 35.7 | 31.7 | 41.9 |
| Highest Mean Min. Temperature (F) | 39.3 | 39.3 | 40.8 | 44.3 | 50.7 | 54.8 | 61.5 | 60.0 | 54.0 | 49.0 | 40.5 | 36.9 | 61.5 |
| Year Highest Occurred | 1986 | 1986 | 1986 | 1990 | 1997 | 1977 | 1996 | 1996 | 2000 | 1987 | 1997 | 1997 | 1996 |
| Lowest Mean Min. Temperature (F) | 24.2 | 26.9 | 30.0 | 32.7 | 38.3 | 44.6 | 50.6 | 48.7 | 44.1 | 39.6 | 32.1 | 23.9 | 23.9 |
| Year Lowest Occurred | 1989 | 1989 | 1991 | 1982 | 1977 | 1980 | 1983 | 1984 | 1980 | 1981 | 1994 | 1984 | 1984 |
| Mean Precipitation (in.) | 12.18 | 11.54 | 10.41 | 4.63 | 2.46 | 0.91 | 0.16 | 0.32 | 1.46 | 3.58 | 8.48 | 9.72 | 65.85 |
| Highest Precipitation (in.) | 40.06 | 29.28 | 27.60 | 13.31 | 11.52 | 3.56 | 2.67 | 1.91 | 6.73 | 9.16 | 30.22 | 32.22 | 40.06 |
| Year Highest Occurred | 1995 | 1998 | 1995 | 1978 | 1998 | 1995 | 1974 | 1976 | 1986 | 1979 | 1973 | 1996 | 1995 |
| Lowest Precipitation (in.) | 0.63 | 0.42 | 1.54 | 0.54 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.33 | 0.00 | 0.00 |
| Year Lowest Occurred | 1984 | 1988 | 1994 | 1973 | 1976 | 1979 | 2000 | 2000 | 1999 | 1995 | 1995 | 1989 | 1979 |
| Heating Degree Days (F) | 696. | 570. | 557. | 401. | 222. | 67. | 9. | 9. | 56. | 218. | 531. | 704. | 4040. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 9. | 39. | 123. | 246. | 228. | 127. | 34. | 0. | 0. | 806. |