| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 45.9 | 50.3 | 54.8 | 59.1 | 65.4 | 71.1 | 78.3 | 79.5 | 74.8 | 63.5 | 51.3 | 45.0 | 61.6 |
| Highest Mean Max. Temperature (F) | 51.5 | 56.8 | 61.7 | 65.0 | 73.3 | 78.8 | 84.6 | 84.4 | 80.8 | 71.5 | 56.2 | 49.8 | 84.6 |
| Year Highest Occurred | 1986 | 1992 | 1992 | 1989 | 1992 | 1987 | 1985 | 1986 | 1974 | 1987 | 1995 | 1979 | 1985 |
| Lowest Mean Max. Temperature (F) | 36.1 | 44.4 | 49.0 | 52.7 | 59.0 | 65.9 | 70.9 | 73.5 | 67.4 | 56.6 | 42.4 | 39.9 | 36.1 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1980 | 1993 | 1975 | 1978 | 1984 | 1985 | 1990 | 1979 |
| Mean Temperature (F) | 39.2 | 42.1 | 45.2 | 48.6 | 53.9 | 59.0 | 64.0 | 64.4 | 60.1 | 51.9 | 44.1 | 39.1 | 51.0 |
| Highest Mean Temperature (F) | 44.6 | 47.0 | 49.8 | 52.7 | 59.0 | 63.0 | 68.1 | 67.9 | 63.3 | 55.6 | 49.0 | 43.7 | 68.1 |
| Year Highest Occurred | 1998 | 1992 | 1986 | 1989 | 1997 | 1992 | 1996 | 1977 | 1994 | 1979 | 1995 | 1973 | 1996 |
| Lowest Mean Temperature (F) | 29.3 | 34.4 | 40.8 | 43.1 | 49.7 | 55.3 | 60.5 | 60.2 | 56.4 | 48.6 | 36.0 | 33.2 | 29.3 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1971 | 1993 | 1975 | 1985 | 1984 | 1985 | 1990 | 1979 |
| Mean Min. Temperature (F) | 32.5 | 33.9 | 35.5 | 38.0 | 42.3 | 46.8 | 49.7 | 49.3 | 45.4 | 40.3 | 36.9 | 33.2 | 40.3 |
| Highest Mean Min. Temperature (F) | 37.9 | 38.4 | 40.0 | 41.8 | 45.7 | 49.5 | 53.9 | 53.2 | 49.6 | 44.8 | 41.8 | 38.0 | 53.9 |
| Year Highest Occurred | 1998 | 1983 | 1983 | 1992 | 1997 | 1978 | 1998 | 1999 | 1995 | 1979 | 1995 | 1973 | 1998 |
| Lowest Mean Min. Temperature (F) | 22.6 | 24.3 | 32.6 | 33.4 | 39.2 | 43.2 | 47.5 | 44.7 | 42.5 | 36.9 | 29.1 | 25.0 | 22.6 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1982 | 1976 | 1984 | 1973 | 1999 | 1974 | 1993 | 1985 | 1979 |
| Mean Precipitation (in.) | 7.27 | 6.34 | 6.14 | 4.90 | 3.99 | 2.83 | 1.06 | 1.18 | 2.14 | 4.34 | 8.75 | 8.02 | 56.96 |
| Highest Precipitation (in.) | 12.30 | 15.18 | 10.65 | 10.69 | 9.33 | 7.01 | 4.95 | 5.37 | 5.51 | 9.27 | 19.05 | 19.62 | 19.62 |
| Year Highest Occurred | 1996 | 1996 | 1989 | 1993 | 1998 | 1984 | 1983 | 1978 | 1986 | 1990 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.74 | 1.94 | 1.67 | 1.93 | 0.66 | 0.61 | 0.06 | 0.00 | 0.00 | 0.33 | 2.82 | 1.77 | 0.00 |
| Year Lowest Occurred | 1985 | 1973 | 1992 | 1989 | 1992 | 1987 | 1998 | 1998 | 1999 | 1988 | 1976 | 1976 | 1998 |
| Heating Degree Days (F) | 799. | 642. | 616. | 494. | 346. | 190. | 83. | 76. | 164. | 405. | 627. | 803. | 5245. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 9. | 52. | 57. | 17. | 0. | 0. | 0. | 135. |