| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 41.0 | 47.1 | 53.4 | 59.9 | 68.0 | 77.0 | 86.7 | 86.9 | 77.4 | 65.4 | 48.9 | 41.8 | 62.8 |
| Highest Mean Max. Temperature (F) | 48.5 | 56.9 | 60.2 | 71.0 | 79.4 | 85.8 | 93.2 | 92.3 | 85.1 | 77.5 | 57.7 | 48.1 | 93.2 |
| Year Highest Occurred | 1986 | 1991 | 1994 | 1987 | 1992 | 1986 | 1985 | 1986 | 1990 | 1988 | 1999 | 1979 | 1985 |
| Lowest Mean Max. Temperature (F) | 28.7 | 35.1 | 46.2 | 49.4 | 60.2 | 70.2 | 74.8 | 74.6 | 67.4 | 57.1 | 35.4 | 30.9 | 28.7 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1971 | 1993 | 1976 | 1985 | 1984 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 31.2 | 35.8 | 40.9 | 46.1 | 53.4 | 60.7 | 67.6 | 67.2 | 58.8 | 49.2 | 38.4 | 32.0 | 48.4 |
| Highest Mean Temperature (F) | 37.8 | 43.6 | 45.1 | 52.0 | 59.8 | 66.5 | 73.5 | 71.5 | 65.1 | 57.6 | 46.2 | 37.6 | 73.5 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1987 | 1992 | 1986 | 1998 | 1986 | 1998 | 1988 | 1999 | 1979 | 1998 |
| Lowest Mean Temperature (F) | 18.6 | 23.7 | 35.9 | 38.8 | 48.2 | 56.4 | 59.8 | 61.0 | 51.8 | 44.4 | 25.7 | 23.4 | 18.6 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1976 | 1993 | 1976 | 1985 | 1984 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 21.3 | 24.5 | 28.4 | 32.3 | 38.7 | 44.4 | 48.4 | 47.5 | 40.1 | 33.0 | 27.9 | 22.1 | 34.1 |
| Highest Mean Min. Temperature (F) | 27.1 | 30.2 | 32.0 | 35.9 | 43.9 | 47.6 | 54.6 | 51.3 | 47.4 | 37.7 | 34.7 | 29.3 | 54.6 |
| Year Highest Occurred | 1986 | 1991 | 1983 | 1988 | 1993 | 1988 | 1998 | 1999 | 1998 | 1988 | 1999 | 1973 | 1998 |
| Lowest Mean Min. Temperature (F) | 8.5 | 12.2 | 23.0 | 28.3 | 36.0 | 40.8 | 44.4 | 42.8 | 35.9 | 29.5 | 15.9 | 13.1 | 8.5 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1975 | 1982 | 1976 | 1986 | 1987 | 1971 | 1971 | 1985 | 1990 | 1979 |
| Mean Precipitation (in.) | 1.14 | 0.79 | 1.28 | 1.38 | 1.74 | 1.27 | 0.64 | 0.85 | 0.78 | 0.87 | 1.41 | 1.38 | 13.53 |
| Highest Precipitation (in.) | 2.77 | 2.39 | 2.80 | 3.19 | 4.30 | 2.81 | 2.06 | 3.38 | 2.27 | 2.14 | 3.12 | 4.26 | 4.30 |
| Year Highest Occurred | 1993 | 1986 | 1984 | 1978 | 1991 | 1991 | 1993 | 1984 | 1982 | 1975 | 1973 | 1983 | 1991 |
| Lowest Precipitation (in.) | 0.20 | 0.23 | 0.40 | 0.25 | 0.15 | 0.12 | 0.00 | 0.01 | 0.00 | 0.00 | 0.35 | 0.14 | 0.00 |
| Year Lowest Occurred | 1992 | 1977 | 1999 | 1980 | 1992 | 1985 | 1988 | 1998 | 1999 | 1988 | 1989 | 1986 | 1988 |
| Heating Degree Days (F) | 1051. | 818. | 749. | 568. | 365. | 167. | 58. | 63. | 225. | 490. | 798. | 1025. | 6377. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 3. | 37. | 137. | 132. | 39. | 1. | 0. | 0. | 349. |