| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 67.5 | 67.5 | 67.1 | 67.3 | 69.0 | 70.4 | 71.5 | 73.0 | 72.9 | 72.0 | 69.6 | 67.6 | 69.6 |
| Highest Mean Max. Temperature (F) | 70.7 | 71.3 | 72.9 | 70.8 | 73.3 | 73.4 | 74.1 | 75.8 | 75.9 | 75.5 | 73.6 | 71.4 | 75.9 |
| Year Highest Occurred | 1983 | 1991 | 1986 | 1996 | 1992 | 1981 | 1981 | 1986 | 1979 | 1992 | 1983 | 1983 | 1979 |
| Lowest Mean Max. Temperature (F) | 63.1 | 61.4 | 62.2 | 63.6 | 65.3 | 66.8 | 68.6 | 69.8 | 70.0 | 68.5 | 65.6 | 62.5 | 61.4 |
| Year Lowest Occurred | 1972 | 1990 | 1977 | 1976 | 1973 | 1975 | 1972 | 1975 | 1975 | 1975 | 1994 | 1971 | 1990 |
| Mean Temperature (F) | 58.6 | 58.6 | 58.8 | 59.5 | 60.9 | 62.3 | 63.4 | 64.3 | 64.1 | 63.5 | 61.7 | 59.4 | 61.3 |
| Highest Mean Temperature (F) | 61.1 | 61.5 | 62.9 | 62.2 | 63.7 | 64.4 | 65.8 | 66.6 | 66.4 | 66.0 | 63.6 | 61.5 | 66.6 |
| Year Highest Occurred | 1974 | 1980 | 1986 | 1996 | 1996 | 1996 | 1994 | 1986 | 1992 | 1992 | 1991 | 1980 | 1986 |
| Lowest Mean Temperature (F) | 56.6 | 55.4 | 56.4 | 56.9 | 58.0 | 59.5 | 60.9 | 61.9 | 61.5 | 61.2 | 59.8 | 56.7 | 55.4 |
| Year Lowest Occurred | 1972 | 1990 | 1975 | 1976 | 1975 | 1976 | 1975 | 1975 | 1975 | 1975 | 1974 | 1971 | 1990 |
| Mean Min. Temperature (F) | 49.6 | 49.6 | 50.5 | 51.7 | 52.7 | 54.2 | 55.2 | 55.5 | 55.2 | 55.0 | 53.7 | 51.2 | 52.8 |
| Highest Mean Min. Temperature (F) | 53.1 | 52.3 | 53.4 | 53.6 | 55.4 | 56.6 | 57.5 | 57.6 | 58.4 | 56.6 | 56.8 | 53.5 | 58.4 |
| Year Highest Occurred | 1974 | 1980 | 1997 | 1974 | 1996 | 1997 | 1994 | 1991 | 1992 | 1989 | 1990 | 1987 | 1992 |
| Lowest Mean Min. Temperature (F) | 46.9 | 45.8 | 45.7 | 49.8 | 50.1 | 51.9 | 52.7 | 53.4 | 52.9 | 52.9 | 50.9 | 48.4 | 45.7 |
| Year Lowest Occurred | 1983 | 1987 | 1983 | 1992 | 1983 | 1976 | 1975 | 1976 | 1975 | 1983 | 1983 | 1977 | 1983 |
| Mean Precipitation (in.) | 10.78 | 9.13 | 14.10 | 10.38 | 6.29 | 5.23 | 7.21 | 6.31 | 6.01 | 6.83 | 14.06 | 11.01 | 107.34 |
| Highest Precipitation (in.) | 34.64 | 54.62 | 70.36 | 33.91 | 14.84 | 17.96 | 20.98 | 19.85 | 24.82 | 14.70 | 46.70 | 28.41 | 70.36 |
| Year Highest Occurred | 1975 | 1979 | 1980 | 1986 | 1989 | 1997 | 1989 | 1982 | 1994 | 1989 | 1990 | 1987 | 1980 |
| Lowest Precipitation (in.) | 0.63 | 0.72 | 1.02 | 2.90 | 2.16 | 1.32 | 1.36 | 1.79 | 1.63 | 2.99 | 2.14 | 2.13 | 0.63 |
| Year Lowest Occurred | 1998 | 1983 | 1983 | 1992 | 1992 | 1971 | 1999 | 1973 | 1984 | 1984 | 1989 | 1989 | 1998 |
| Heating Degree Days (F) | 199. | 182. | 179. | 165. | 138. | 90. | 68. | 49. | 52. | 66. | 104. | 175. | 1467. |
| Cooling Degree Days (F) | 0. | 0. | 1. | 1. | 8. | 8. | 16. | 26. | 24. | 18. | 4. | 1. | 107. |