| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 45.1 | 48.1 | 51.6 | 55.8 | 61.3 | 64.8 | 69.2 | 69.5 | 65.4 | 57.8 | 50.4 | 45.5 | 57.0 |
| Highest Mean Max. Temperature (F) | 50.3 | 52.8 | 55.7 | 59.0 | 65.7 | 69.3 | 73.9 | 73.8 | 70.2 | 60.5 | 53.9 | 49.6 | 73.9 |
| Year Highest Occurred | 1994 | 1977 | 1981 | 1980 | 1993 | 1992 | 1985 | 1986 | 1974 | 1987 | 1995 | 1979 | 1985 |
| Lowest Mean Max. Temperature (F) | 39.8 | 39.6 | 47.0 | 51.7 | 57.5 | 60.7 | 64.8 | 63.4 | 60.9 | 55.6 | 40.9 | 38.5 | 38.5 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1996 | 1971 | 1986 | 1976 | 1972 | 1971 | 1985 | 1990 | 1990 |
| Mean Temperature (F) | 37.2 | 39.6 | 42.2 | 46.0 | 51.6 | 55.6 | 59.2 | 59.4 | 54.6 | 47.7 | 41.8 | 37.9 | 47.7 |
| Highest Mean Temperature (F) | 41.5 | 43.5 | 45.6 | 48.5 | 56.2 | 58.8 | 62.0 | 62.1 | 57.8 | 50.2 | 44.9 | 41.9 | 62.1 |
| Year Highest Occurred | 1994 | 1998 | 1992 | 1992 | 1993 | 1992 | 1998 | 1997 | 1997 | 1997 | 1987 | 1979 | 1997 |
| Lowest Mean Temperature (F) | 31.0 | 30.4 | 37.9 | 42.2 | 48.8 | 52.6 | 56.5 | 55.7 | 50.6 | 45.3 | 33.3 | 31.3 | 30.4 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1974 | 1971 | 1999 | 1973 | 1972 | 1972 | 1985 | 1983 | 1989 |
| Mean Min. Temperature (F) | 29.2 | 31.0 | 32.7 | 36.1 | 41.9 | 46.4 | 49.2 | 49.2 | 43.8 | 37.5 | 33.2 | 30.3 | 38.4 |
| Highest Mean Min. Temperature (F) | 33.5 | 35.5 | 36.8 | 40.0 | 47.1 | 49.7 | 53.5 | 51.3 | 47.6 | 42.0 | 36.9 | 34.3 | 53.5 |
| Year Highest Occurred | 1992 | 1991 | 1998 | 1994 | 1998 | 1998 | 1998 | 1999 | 1997 | 1997 | 1999 | 1989 | 1998 |
| Lowest Mean Min. Temperature (F) | 21.7 | 21.3 | 28.5 | 32.2 | 39.2 | 43.2 | 46.4 | 46.0 | 40.2 | 34.1 | 25.7 | 22.8 | 21.3 |
| Year Lowest Occurred | 1993 | 1989 | 1976 | 1982 | 1982 | 1976 | 1984 | 1973 | 1972 | 1972 | 1985 | 1983 | 1989 |
| Mean Precipitation (in.) | 1.89 | 1.47 | 1.24 | 0.97 | 1.18 | 1.04 | 0.67 | 0.73 | 0.84 | 1.27 | 2.55 | 2.25 | 16.10 |
| Highest Precipitation (in.) | 4.76 | 2.90 | 2.28 | 1.79 | 2.40 | 2.60 | 1.69 | 2.71 | 3.12 | 4.36 | 4.78 | 4.68 | 4.78 |
| Year Highest Occurred | 1999 | 1976 | 1988 | 1972 | 1988 | 1997 | 1993 | 1995 | 1983 | 1985 | 1990 | 1987 | 1990 |
| Lowest Precipitation (in.) | 0.11 | 0.10 | 0.47 | 0.33 | 0.13 | 0.19 | 0.15 | 0.01 | 0.00 | 0.02 | 0.49 | 0.16 | 0.00 |
| Year Lowest Occurred | 1985 | 1993 | 1986 | 1987 | 1992 | 1989 | 1994 | 1986 | 1999 | 1987 | 1993 | 1985 | 1999 |
| Heating Degree Days (F) | 864. | 713. | 709. | 571. | 416. | 282. | 183. | 181. | 312. | 537. | 696. | 841. | 6305. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 3. | 5. | 1. | 0. | 0. | 0. | 9. |