| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 55.6 | 57.2 | 59.2 | 64.8 | 70.8 | 78.7 | 85.2 | 85.1 | 82.2 | 74.4 | 61.9 | 56.2 | 69.3 |
| Highest Mean Max. Temperature (F) | 62.1 | 64.5 | 68.5 | 72.8 | 78.5 | 87.4 | 90.8 | 89.7 | 90.1 | 82.3 | 70.6 | 65.5 | 90.8 |
| Year Highest Occurred | 1976 | 1977 | 1972 | 1977 | 1992 | 1979 | 1978 | 1971 | 1974 | 1978 | 1995 | 1976 | 1978 |
| Lowest Mean Max. Temperature (F) | 50.4 | 49.7 | 51.8 | 57.0 | 57.3 | 68.6 | 76.5 | 79.6 | 73.7 | 67.5 | 54.3 | 48.6 | 48.6 |
| Year Lowest Occurred | 1982 | 1998 | 1991 | 1975 | 1998 | 1998 | 1987 | 1991 | 1986 | 1984 | 1994 | 1971 | 1971 |
| Mean Temperature (F) | 47.5 | 49.0 | 50.0 | 54.1 | 59.1 | 66.0 | 72.4 | 72.3 | 69.9 | 63.1 | 52.8 | 48.0 | 58.7 |
| Highest Mean Temperature (F) | 53.1 | 54.8 | 56.7 | 60.2 | 66.4 | 73.0 | 78.6 | 76.8 | 75.3 | 70.1 | 59.8 | 55.9 | 78.6 |
| Year Highest Occurred | 1976 | 1977 | 1972 | 1977 | 1997 | 1981 | 1996 | 1998 | 1975 | 1978 | 1976 | 1976 | 1996 |
| Lowest Mean Temperature (F) | 43.5 | 44.4 | 44.5 | 47.5 | 50.2 | 58.8 | 66.4 | 67.7 | 62.6 | 58.1 | 44.9 | 41.4 | 41.4 |
| Year Lowest Occurred | 1982 | 1998 | 1991 | 1975 | 1998 | 1980 | 2000 | 1991 | 1986 | 1984 | 1994 | 1971 | 1971 |
| Mean Min. Temperature (F) | 39.3 | 40.7 | 40.7 | 43.3 | 47.4 | 53.2 | 59.6 | 59.5 | 57.5 | 51.8 | 43.7 | 39.7 | 48.0 |
| Highest Mean Min. Temperature (F) | 44.8 | 45.1 | 46.0 | 48.2 | 54.9 | 60.5 | 67.1 | 65.4 | 64.8 | 57.9 | 49.9 | 46.2 | 67.1 |
| Year Highest Occurred | 1981 | 1977 | 1978 | 1985 | 1997 | 1981 | 1996 | 1998 | 1999 | 1978 | 1976 | 1976 | 1996 |
| Lowest Mean Min. Temperature (F) | 34.8 | 35.5 | 36.8 | 38.0 | 41.3 | 47.1 | 53.1 | 55.7 | 51.4 | 46.0 | 35.4 | 34.2 | 34.2 |
| Year Lowest Occurred | 1989 | 1990 | 1975 | 1975 | 1995 | 1980 | 2000 | 1991 | 1986 | 2000 | 1994 | 1971 | 1971 |
| Mean Precipitation (in.) | 4.76 | 4.49 | 3.83 | 1.46 | 0.85 | 0.15 | 0.05 | 0.08 | 0.36 | 1.31 | 3.27 | 3.35 | 23.96 |
| Highest Precipitation (in.) | 11.63 | 13.54 | 10.43 | 4.28 | 4.64 | 1.34 | 0.56 | 1.11 | 1.78 | 3.36 | 7.72 | 8.84 | 13.54 |
| Year Highest Occurred | 1995 | 1998 | 1991 | 1982 | 1998 | 1995 | 1974 | 1976 | 1989 | 1972 | 1983 | 1995 | 1998 |
| Lowest Precipitation (in.) | 0.31 | 0.37 | 0.13 | 0.15 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.06 | 0.00 | 0.00 |
| Year Lowest Occurred | 1984 | 1995 | 1988 | 1973 | 1992 | 1999 | 2000 | 1998 | 1997 | 1995 | 1995 | 1989 | 1992 |
| Heating Degree Days (F) | 545. | 451. | 451. | 337. | 237. | 105. | 29. | 12. | 44. | 147. | 379. | 530. | 3267. |
| Cooling Degree Days (F) | 0. | 0. | 1. | 8. | 53. | 132. | 259. | 239. | 188. | 89. | 13. | 1. | 983. |