| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 41.0 | 48.1 | 58.1 | 66.3 | 74.5 | 81.8 | 89.3 | 89.5 | 80.4 | 67.8 | 51.3 | 41.4 | 65.8 |
| Highest Mean Max. Temperature (F) | 48.7 | 54.8 | 63.1 | 71.9 | 80.1 | 88.9 | 96.1 | 95.8 | 87.0 | 74.7 | 57.2 | 47.9 | 96.1 |
| Year Highest Occurred | 1971 | 1995 | 1992 | 1987 | 1987 | 1986 | 1985 | 1986 | 1990 | 1988 | 1990 | 1973 | 1985 |
| Lowest Mean Max. Temperature (F) | 24.3 | 35.6 | 52.1 | 60.6 | 67.8 | 75.7 | 81.4 | 83.1 | 73.8 | 65.1 | 38.0 | 28.9 | 24.3 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1996 | 1971 | 1993 | 1976 | 1985 | 1984 | 1985 | 1985 | 1979 |
| Mean Temperature (F) | 33.1 | 38.6 | 46.0 | 52.6 | 60.0 | 66.5 | 72.1 | 71.9 | 63.8 | 53.1 | 41.5 | 33.7 | 52.7 |
| Highest Mean Temperature (F) | 40.2 | 44.1 | 49.6 | 56.9 | 64.8 | 71.2 | 79.4 | 76.5 | 69.2 | 59.5 | 47.4 | 40.1 | 79.4 |
| Year Highest Occurred | 1983 | 1991 | 1986 | 1987 | 1993 | 1986 | 1998 | 1986 | 1990 | 1988 | 1983 | 1973 | 1998 |
| Lowest Mean Temperature (F) | 17.1 | 27.0 | 41.0 | 47.2 | 55.3 | 61.4 | 66.2 | 67.3 | 58.1 | 49.9 | 29.0 | 23.7 | 17.1 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1996 | 1971 | 1993 | 1975 | 1971 | 1984 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 25.1 | 29.0 | 33.8 | 38.8 | 45.4 | 51.1 | 54.9 | 54.3 | 47.2 | 38.4 | 31.7 | 25.9 | 39.6 |
| Highest Mean Min. Temperature (F) | 32.6 | 34.9 | 38.4 | 42.2 | 50.2 | 55.1 | 62.7 | 59.7 | 51.5 | 44.4 | 38.4 | 32.3 | 62.7 |
| Year Highest Occurred | 1981 | 1992 | 1983 | 1990 | 1993 | 1992 | 1998 | 1997 | 1998 | 1988 | 1983 | 1973 | 1998 |
| Lowest Mean Min. Temperature (F) | 9.9 | 18.4 | 29.6 | 33.8 | 42.1 | 47.0 | 50.7 | 49.8 | 41.2 | 34.4 | 20.0 | 17.8 | 9.9 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1984 | 1971 | 1986 | 1980 | 1996 | 1996 | 1985 | 1990 | 1979 |
| Mean Precipitation (in.) | 0.96 | 0.70 | 0.67 | 0.64 | 0.65 | 0.56 | 0.24 | 0.35 | 0.48 | 0.65 | 1.03 | 1.18 | 8.11 |
| Highest Precipitation (in.) | 2.25 | 1.64 | 1.78 | 2.19 | 2.29 | 1.52 | 0.75 | 1.53 | 1.81 | 2.05 | 2.74 | 2.75 | 2.75 |
| Year Highest Occurred | 1978 | 1999 | 1989 | 1992 | 1972 | 1972 | 1974 | 1977 | 1986 | 1982 | 1973 | 1973 | 1973 |
| Lowest Precipitation (in.) | 0.11 | 0.00 | 0.06 | 0.00 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.00 |
| Year Lowest Occurred | 1984 | 1988 | 1992 | 1999 | 1992 | 1979 | 2000 | 2000 | 1999 | 1987 | 1976 | 1976 | 1988 |
| Heating Degree Days (F) | 991. | 741. | 589. | 375. | 181. | 66. | 16. | 15. | 114. | 369. | 705. | 973. | 5135. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 25. | 109. | 236. | 229. | 78. | 1. | 0. | 0. | 680. |