| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 36.6 | 40.5 | 50.4 | 63.0 | 72.2 | 78.8 | 82.1 | 80.3 | 73.7 | 63.8 | 51.9 | 41.2 | 61.2 |
| Highest Mean Max. Temperature (F) | 45.5 | 50.1 | 57.2 | 70.0 | 78.8 | 82.8 | 86.9 | 84.5 | 79.8 | 68.5 | 58.4 | 50.0 | 86.9 |
| Year Highest Occurred | 1990 | 1976 | 2000 | 1994 | 1977 | 1987 | 1999 | 1995 | 1998 | 1995 | 1999 | 1984 | 1999 |
| Lowest Mean Max. Temperature (F) | 24.5 | 29.1 | 42.0 | 56.2 | 67.4 | 74.4 | 77.5 | 75.7 | 69.5 | 58.5 | 44.8 | 29.2 | 24.5 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1975 | 1990 | 1982 | 2000 | 1994 | 1975 | 1988 | 1995 | 1989 | 1977 |
| Mean Temperature (F) | 29.0 | 32.2 | 40.9 | 51.9 | 61.6 | 69.2 | 73.1 | 71.5 | 65.1 | 54.5 | 43.8 | 33.8 | 52.2 |
| Highest Mean Temperature (F) | 38.0 | 39.4 | 47.0 | 57.5 | 67.7 | 73.3 | 76.9 | 74.4 | 69.7 | 59.8 | 49.5 | 41.5 | 76.9 |
| Year Highest Occurred | 1990 | 1976 | 1973 | 1994 | 1991 | 1987 | 1999 | 1983 | 1998 | 1971 | 1999 | 1984 | 1999 |
| Lowest Mean Temperature (F) | 16.8 | 21.6 | 33.6 | 46.3 | 57.5 | 65.7 | 69.0 | 67.9 | 61.4 | 49.1 | 37.1 | 21.4 | 16.8 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1975 | 1997 | 1982 | 2000 | 1992 | 1975 | 1988 | 1995 | 1989 | 1977 |
| Mean Min. Temperature (F) | 21.4 | 23.9 | 31.4 | 40.7 | 51.0 | 59.5 | 64.0 | 62.7 | 56.4 | 45.2 | 35.7 | 26.3 | 43.2 |
| Highest Mean Min. Temperature (F) | 31.0 | 31.4 | 37.9 | 45.0 | 57.4 | 63.7 | 66.8 | 65.9 | 59.6 | 52.2 | 41.0 | 33.1 | 66.8 |
| Year Highest Occurred | 1998 | 1998 | 1973 | 1994 | 1991 | 1987 | 1999 | 1978 | 1971 | 1971 | 1985 | 1998 | 1999 |
| Lowest Mean Min. Temperature (F) | 9.2 | 14.0 | 25.1 | 36.3 | 45.8 | 56.2 | 60.4 | 59.6 | 53.3 | 39.7 | 29.2 | 13.6 | 9.2 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1975 | 1997 | 1980 | 2000 | 1992 | 1975 | 1988 | 1976 | 1989 | 1977 |
| Mean Precipitation (in.) | 3.95 | 3.33 | 4.32 | 3.96 | 5.14 | 4.61 | 3.82 | 3.92 | 4.91 | 3.89 | 3.87 | 3.44 | 49.16 |
| Highest Precipitation (in.) | 10.09 | 9.61 | 7.39 | 9.17 | 12.83 | 15.33 | 11.11 | 10.79 | 15.47 | 11.70 | 9.55 | 7.01 | 15.47 |
| Year Highest Occurred | 1996 | 1984 | 1980 | 1983 | 1988 | 1972 | 1996 | 1984 | 1979 | 1976 | 1985 | 1992 | 1979 |
| Lowest Precipitation (in.) | 0.45 | 0.36 | 1.36 | 0.55 | 0.48 | 0.76 | 0.93 | 0.92 | 1.07 | 0.22 | 0.62 | 0.44 | 0.22 |
| Year Lowest Occurred | 1981 | 1978 | 1995 | 1985 | 1977 | 1988 | 1983 | 1989 | 1986 | 1992 | 1998 | 1988 | 1992 |
| Heating Degree Days (F) | 1116. | 918. | 748. | 396. | 154. | 21. | 3. | 7. | 66. | 335. | 637. | 969. | 5370. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 48. | 145. | 253. | 207. | 68. | 10. | 0. | 0. | 733. |