| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 33.9 | 42.6 | 54.7 | 64.0 | 73.0 | 81.8 | 90.5 | 89.8 | 79.3 | 65.6 | 47.2 | 35.6 | 63.2 |
| Highest Mean Max. Temperature (F) | 41.9 | 51.1 | 63.6 | 72.8 | 82.7 | 89.3 | 95.7 | 95.3 | 88.3 | 76.1 | 54.5 | 42.7 | 95.7 |
| Year Highest Occurred | 1990 | 1995 | 1992 | 1987 | 1992 | 1977 | 1985 | 1981 | 1990 | 1988 | 1999 | 1977 | 1985 |
| Lowest Mean Max. Temperature (F) | 22.0 | 27.4 | 46.4 | 55.5 | 67.8 | 75.6 | 80.0 | 82.7 | 69.5 | 60.5 | 36.3 | 19.9 | 19.9 |
| Year Lowest Occurred | 1979 | 1989 | 1993 | 1975 | 1977 | 1993 | 1993 | 1976 | 1985 | 1985 | 1985 | 1985 | 1985 |
| Mean Temperature (F) | 26.3 | 33.4 | 42.9 | 50.6 | 59.0 | 66.8 | 74.0 | 72.5 | 62.4 | 50.4 | 37.2 | 27.8 | 50.3 |
| Highest Mean Temperature (F) | 34.5 | 40.8 | 49.2 | 56.4 | 65.9 | 73.7 | 78.3 | 76.8 | 70.3 | 58.0 | 42.8 | 36.2 | 78.3 |
| Year Highest Occurred | 1999 | 1995 | 1992 | 1987 | 1992 | 1977 | 1998 | 1986 | 1990 | 1988 | 1999 | 1977 | 1998 |
| Lowest Mean Temperature (F) | 12.4 | 16.2 | 37.4 | 44.4 | 55.4 | 62.2 | 65.2 | 67.5 | 54.6 | 46.0 | 26.8 | 11.2 | 11.2 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1984 | 1993 | 1993 | 1993 | 1985 | 1985 | 1985 | 1985 | 1985 |
| Mean Min. Temperature (F) | 18.6 | 24.2 | 31.1 | 37.1 | 45.0 | 51.8 | 57.4 | 55.1 | 45.5 | 35.2 | 27.2 | 19.9 | 37.3 |
| Highest Mean Min. Temperature (F) | 28.7 | 31.3 | 35.8 | 41.3 | 49.9 | 58.1 | 61.6 | 59.0 | 52.5 | 39.9 | 33.9 | 29.6 | 61.6 |
| Year Highest Occurred | 1981 | 2000 | 1986 | 1990 | 1987 | 1977 | 1975 | 1986 | 1998 | 1988 | 1983 | 1977 | 1975 |
| Lowest Mean Min. Temperature (F) | 2.8 | 4.9 | 25.8 | 33.2 | 41.8 | 48.2 | 50.4 | 50.5 | 39.7 | 31.4 | 17.3 | 2.5 | 2.5 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1982 | 1975 | 1998 | 1993 | 1993 | 1985 | 1985 | 1985 | 1985 | 1985 |
| Mean Precipitation (in.) | 1.29 | 1.04 | 1.08 | 0.84 | 0.98 | 0.78 | 0.36 | 0.38 | 0.48 | 0.65 | 1.19 | 1.37 | 10.44 |
| Highest Precipitation (in.) | 2.67 | 2.50 | 3.73 | 3.51 | 4.55 | 1.77 | 1.40 | 2.12 | 1.59 | 2.06 | 2.76 | 3.57 | 4.55 |
| Year Highest Occurred | 1995 | 1999 | 1983 | 1978 | 1998 | 1995 | 1997 | 1979 | 1985 | 1982 | 1981 | 1983 | 1998 |
| Lowest Precipitation (in.) | 0.11 | 0.14 | 0.05 | 0.08 | 0.04 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.19 | 0.01 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1994 | 1987 | 1971 | 1977 | 1999 | 1998 | 1999 | 1988 | 1976 | 1989 | 1999 |
| Heating Degree Days (F) | 1201. | 885. | 685. | 437. | 210. | 70. | 12. | 18. | 153. | 454. | 834. | 1154. | 6113. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 24. | 124. | 289. | 248. | 75. | 1. | 0. | 0. | 763. |