| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 56.2 | 61.0 | 64.2 | 68.5 | 72.5 | 77.6 | 80.9 | 81.2 | 79.7 | 74.4 | 63.6 | 56.5 | 69.7 |
| Highest Mean Max. Temperature (F) | 61.9 | 67.3 | 70.6 | 73.3 | 79.3 | 85.7 | 86.7 | 85.8 | 87.5 | 79.9 | 70.6 | 62.7 | 87.5 |
| Year Highest Occurred | 1976 | 1988 | 1988 | 1987 | 1997 | 1981 | 1988 | 1998 | 1984 | 1980 | 1980 | 1976 | 1984 |
| Lowest Mean Max. Temperature (F) | 51.0 | 56.3 | 58.1 | 62.8 | 64.3 | 71.8 | 75.6 | 77.4 | 71.3 | 68.5 | 57.0 | 50.5 | 50.5 |
| Year Lowest Occurred | 1985 | 1989 | 1999 | 1975 | 1998 | 1982 | 1994 | 1991 | 1986 | 1975 | 1994 | 1985 | 1985 |
| Mean Temperature (F) | 48.8 | 52.4 | 54.7 | 57.7 | 61.1 | 65.3 | 67.7 | 68.0 | 66.8 | 62.5 | 54.6 | 48.9 | 59.0 |
| Highest Mean Temperature (F) | 52.6 | 55.5 | 58.8 | 61.4 | 66.8 | 71.8 | 71.4 | 70.8 | 71.9 | 65.4 | 58.7 | 52.9 | 71.9 |
| Year Highest Occurred | 1978 | 1988 | 1972 | 1992 | 1997 | 1981 | 1988 | 1998 | 1984 | 1983 | 1980 | 1981 | 1984 |
| Lowest Mean Temperature (F) | 44.1 | 47.5 | 50.5 | 52.9 | 56.8 | 61.7 | 64.1 | 65.3 | 61.8 | 58.8 | 49.0 | 44.0 | 44.0 |
| Year Lowest Occurred | 1985 | 1989 | 1999 | 1975 | 1999 | 1982 | 1994 | 1973 | 1986 | 1975 | 1994 | 1985 | 1985 |
| Mean Min. Temperature (F) | 41.3 | 43.8 | 45.2 | 46.8 | 49.6 | 53.0 | 54.5 | 54.8 | 53.9 | 50.6 | 45.6 | 41.3 | 48.4 |
| Highest Mean Min. Temperature (F) | 47.0 | 47.8 | 49.7 | 51.2 | 54.2 | 57.8 | 57.3 | 57.9 | 57.7 | 54.0 | 49.2 | 47.3 | 57.9 |
| Year Highest Occurred | 1995 | 1980 | 1978 | 1992 | 1997 | 1981 | 1995 | 1990 | 1983 | 1987 | 1981 | 1983 | 1990 |
| Lowest Mean Min. Temperature (F) | 36.4 | 38.7 | 41.9 | 42.5 | 45.2 | 49.3 | 52.5 | 51.6 | 50.0 | 47.1 | 41.0 | 35.4 | 35.4 |
| Year Lowest Occurred | 1993 | 1989 | 1976 | 1976 | 1976 | 1980 | 1997 | 1973 | 1974 | 1971 | 1994 | 1990 | 1990 |
| Mean Precipitation (in.) | 7.38 | 7.14 | 4.89 | 1.75 | 0.70 | 0.12 | 0.06 | 0.08 | 0.34 | 1.65 | 4.86 | 5.32 | 34.29 |
| Highest Precipitation (in.) | 24.11 | 22.69 | 14.17 | 4.42 | 4.57 | 0.79 | 1.56 | 1.07 | 2.68 | 6.98 | 18.69 | 15.40 | 24.11 |
| Year Highest Occurred | 1995 | 1998 | 1983 | 1982 | 1998 | 1995 | 1974 | 1997 | 1977 | 1972 | 1973 | 1995 | 1995 |
| Lowest Precipitation (in.) | 0.35 | 0.16 | 0.00 | 0.12 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.08 | 0.00 | 0.00 |
| Year Lowest Occurred | 1976 | 1971 | 1988 | 1990 | 1992 | 1998 | 2000 | 2000 | 1996 | 1999 | 1995 | 1989 | 1988 |
| Heating Degree Days (F) | 504. | 353. | 319. | 226. | 157. | 65. | 20. | 9. | 46. | 108. | 314. | 500. | 2621. |
| Cooling Degree Days (F) | 0. | 0. | 1. | 5. | 35. | 73. | 104. | 102. | 99. | 30. | 2. | 0. | 451. |