| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 56.4 | 59.3 | 60.9 | 64.0 | 66.6 | 69.5 | 70.4 | 70.6 | 71.7 | 70.0 | 62.3 | 56.6 | 64.9 |
| Highest Mean Max. Temperature (F) | 59.8 | 65.8 | 65.3 | 68.6 | 74.3 | 76.3 | 75.0 | 75.1 | 80.2 | 75.1 | 67.6 | 60.8 | 80.2 |
| Year Highest Occurred | 1976 | 1991 | 1997 | 1987 | 1997 | 1981 | 1995 | 2000 | 1984 | 1999 | 1976 | 1980 | 1984 |
| Lowest Mean Max. Temperature (F) | 53.3 | 55.3 | 55.4 | 57.6 | 62.2 | 63.2 | 65.0 | 66.3 | 66.8 | 66.6 | 56.2 | 51.4 | 51.4 |
| Year Lowest Occurred | 1982 | 1999 | 1991 | 1975 | 1995 | 1982 | 1994 | 1980 | 1986 | 1975 | 1994 | 1972 | 1972 |
| Mean Temperature (F) | 50.0 | 52.7 | 54.2 | 56.3 | 59.0 | 61.6 | 62.8 | 63.2 | 63.8 | 61.8 | 55.1 | 50.2 | 57.6 |
| Highest Mean Temperature (F) | 53.0 | 56.9 | 57.5 | 59.8 | 64.2 | 66.7 | 66.3 | 66.6 | 68.5 | 64.6 | 59.3 | 53.8 | 68.5 |
| Year Highest Occurred | 1986 | 1991 | 1993 | 1992 | 1997 | 1981 | 1995 | 1997 | 1984 | 1991 | 1976 | 1996 | 1984 |
| Lowest Mean Temperature (F) | 46.4 | 48.7 | 50.2 | 51.0 | 55.9 | 58.2 | 59.7 | 60.3 | 60.5 | 58.9 | 50.3 | 45.8 | 45.8 |
| Year Lowest Occurred | 1982 | 1989 | 1999 | 1975 | 1971 | 1982 | 1994 | 1980 | 1986 | 1971 | 1994 | 1972 | 1972 |
| Mean Min. Temperature (F) | 43.6 | 46.1 | 47.4 | 48.6 | 51.3 | 53.6 | 55.1 | 55.7 | 55.9 | 53.5 | 47.9 | 43.7 | 50.2 |
| Highest Mean Min. Temperature (F) | 48.9 | 50.0 | 51.5 | 52.6 | 54.8 | 57.1 | 57.6 | 58.1 | 58.9 | 56.2 | 51.7 | 48.6 | 58.9 |
| Year Highest Occurred | 1995 | 1995 | 1986 | 1989 | 1992 | 1981 | 1995 | 1997 | 1979 | 1987 | 1995 | 1995 | 1979 |
| Lowest Mean Min. Temperature (F) | 39.5 | 41.7 | 42.8 | 44.4 | 47.4 | 50.8 | 51.9 | 53.5 | 52.9 | 49.8 | 42.9 | 38.9 | 38.9 |
| Year Lowest Occurred | 1985 | 1989 | 1985 | 1975 | 1999 | 1991 | 1981 | 1985 | 1985 | 1971 | 1985 | 1990 | 1990 |
| Mean Precipitation (in.) | 5.13 | 4.75 | 4.08 | 1.63 | 0.61 | 0.14 | 0.07 | 0.10 | 0.36 | 1.37 | 3.62 | 3.54 | 25.40 |
| Highest Precipitation (in.) | 12.47 | 14.49 | 11.74 | 5.34 | 4.00 | 1.06 | 1.50 | 1.33 | 1.65 | 4.22 | 11.47 | 9.44 | 14.49 |
| Year Highest Occurred | 1973 | 1998 | 1983 | 1982 | 1990 | 1995 | 1974 | 1976 | 1977 | 1975 | 1973 | 1996 | 1998 |
| Lowest Precipitation (in.) | 0.22 | 0.20 | 0.09 | 0.06 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1984 | 1997 | 1988 | 1985 | 1992 | 1996 | 2000 | 2000 | 1996 | 1999 | 1995 | 1989 | 1992 |
| Heating Degree Days (F) | 466. | 344. | 337. | 263. | 198. | 123. | 85. | 80. | 82. | 119. | 300. | 460. | 2857. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 11. | 18. | 22. | 23. | 46. | 18. | 3. | 0. | 142. |