| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 45.0 | 50.1 | 55.8 | 61.3 | 67.1 | 71.8 | 77.4 | 78.6 | 73.2 | 62.0 | 50.5 | 44.2 | 61.4 |
| Highest Mean Max. Temperature (F) | 50.3 | 55.4 | 62.1 | 66.3 | 72.4 | 78.8 | 87.6 | 86.0 | 81.4 | 67.2 | 54.6 | 49.0 | 87.6 |
| Year Highest Occurred | 1983 | 1991 | 1992 | 1989 | 1992 | 1982 | 1985 | 1977 | 1974 | 1987 | 1997 | 1980 | 1985 |
| Lowest Mean Max. Temperature (F) | 39.7 | 42.9 | 50.5 | 56.6 | 60.4 | 65.6 | 69.5 | 70.6 | 63.1 | 58.1 | 43.0 | 38.6 | 38.6 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1996 | 1971 | 1993 | 1976 | 1978 | 1990 | 1985 | 1985 | 1985 |
| Mean Temperature (F) | 38.0 | 41.4 | 45.3 | 49.8 | 55.2 | 59.7 | 64.0 | 64.6 | 59.5 | 50.8 | 42.6 | 37.8 | 50.7 |
| Highest Mean Temperature (F) | 42.9 | 46.8 | 49.4 | 52.9 | 60.0 | 64.2 | 67.7 | 68.6 | 63.9 | 53.7 | 46.3 | 42.1 | 68.6 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 1992 | 1993 | 1992 | 1985 | 1977 | 1974 | 1993 | 1995 | 1979 | 1977 |
| Lowest Mean Temperature (F) | 32.0 | 33.8 | 41.0 | 45.1 | 51.3 | 56.2 | 60.2 | 60.7 | 54.4 | 47.8 | 34.1 | 31.6 | 31.6 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1996 | 1971 | 1993 | 1976 | 1978 | 1977 | 1985 | 1983 | 1983 |
| Mean Min. Temperature (F) | 30.9 | 32.6 | 34.8 | 38.2 | 43.2 | 47.6 | 50.6 | 50.5 | 45.7 | 39.6 | 34.7 | 31.4 | 40.0 |
| Highest Mean Min. Temperature (F) | 36.0 | 38.2 | 37.8 | 41.8 | 47.6 | 50.7 | 54.2 | 53.8 | 49.0 | 44.1 | 38.3 | 35.6 | 54.2 |
| Year Highest Occurred | 1994 | 1991 | 1998 | 1993 | 1993 | 1992 | 1998 | 1990 | 1997 | 1988 | 1998 | 1979 | 1998 |
| Lowest Mean Min. Temperature (F) | 24.2 | 24.7 | 31.2 | 33.7 | 40.1 | 43.8 | 47.7 | 47.3 | 42.3 | 34.7 | 25.1 | 24.2 | 24.2 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1982 | 1982 | 1976 | 1985 | 1985 | 1984 | 1977 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 7.39 | 7.38 | 5.93 | 3.81 | 2.82 | 2.13 | 1.29 | 1.24 | 1.60 | 4.13 | 7.99 | 8.65 | 54.36 |
| Highest Precipitation (in.) | 19.69 | 25.08 | 13.34 | 7.83 | 6.05 | 4.63 | 3.41 | 3.80 | 4.61 | 12.57 | 23.88 | 19.19 | 25.08 |
| Year Highest Occurred | 1998 | 1999 | 1971 | 1996 | 1996 | 1993 | 1993 | 1975 | 1978 | 1997 | 1983 | 1982 | 1999 |
| Lowest Precipitation (in.) | 0.31 | 0.21 | 1.04 | 1.11 | 0.65 | 0.24 | 0.00 | 0.17 | 0.10 | 0.00 | 0.59 | 1.73 | 0.00 |
| Year Lowest Occurred | 1985 | 1993 | 1996 | 1973 | 1992 | 1989 | 1984 | 1988 | 1990 | 1987 | 1976 | 1985 | 1984 |
| Heating Degree Days (F) | 839. | 661. | 611. | 457. | 308. | 172. | 77. | 82. | 186. | 441. | 673. | 844. | 5351. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 2. | 12. | 46. | 67. | 21. | 0. | 0. | 0. | 148. |