| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 39.4 | 44.2 | 50.5 | 57.0 | 65.1 | 72.7 | 81.2 | 81.6 | 75.3 | 63.2 | 46.5 | 38.7 | 59.6 |
| Highest Mean Max. Temperature (F) | 48.7 | 53.9 | 63.6 | 68.5 | 80.4 | 79.6 | 88.2 | 87.0 | 83.6 | 73.1 | 54.8 | 43.1 | 88.2 |
| Year Highest Occurred | 1981 | 1977 | 1992 | 1987 | 1992 | 1987 | 1996 | 1986 | 1974 | 1987 | 1976 | 1976 | 1996 |
| Lowest Mean Max. Temperature (F) | 34.9 | 36.4 | 41.4 | 49.6 | 56.9 | 65.0 | 71.2 | 73.6 | 65.4 | 55.8 | 36.9 | 32.6 | 32.6 |
| Year Lowest Occurred | 1993 | 1989 | 1971 | 1975 | 1977 | 1980 | 1993 | 1976 | 1986 | 1975 | 1994 | 1990 | 1990 |
| Mean Temperature (F) | 33.6 | 36.7 | 40.8 | 45.6 | 52.2 | 58.7 | 65.0 | 65.1 | 59.5 | 50.6 | 39.6 | 33.6 | 48.4 |
| Highest Mean Temperature (F) | 40.4 | 42.8 | 48.7 | 52.6 | 61.3 | 63.2 | 69.8 | 68.3 | 63.9 | 57.4 | 46.0 | 37.9 | 69.8 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1987 | 1992 | 1992 | 1998 | 1986 | 1991 | 1988 | 1986 | 1977 | 1998 |
| Lowest Mean Temperature (F) | 28.6 | 28.5 | 33.8 | 40.1 | 46.5 | 54.0 | 58.8 | 61.1 | 53.8 | 45.5 | 32.0 | 27.1 | 27.1 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1971 | 1993 | 1980 | 1986 | 1971 | 1985 | 1990 | 1990 |
| Mean Min. Temperature (F) | 27.8 | 29.2 | 31.1 | 34.2 | 39.2 | 44.7 | 48.8 | 48.5 | 43.7 | 37.9 | 32.7 | 28.5 | 37.2 |
| Highest Mean Min. Temperature (F) | 32.3 | 33.7 | 34.4 | 38.7 | 42.9 | 48.5 | 53.5 | 52.3 | 47.7 | 42.7 | 38.9 | 33.7 | 53.5 |
| Year Highest Occurred | 1986 | 1992 | 1983 | 1992 | 1987 | 1986 | 1998 | 1977 | 1995 | 1988 | 1986 | 1977 | 1998 |
| Lowest Mean Min. Temperature (F) | 20.6 | 20.5 | 26.1 | 29.5 | 36.0 | 41.2 | 46.0 | 44.2 | 40.5 | 33.5 | 25.6 | 21.5 | 20.5 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1971 | 1977 | 1976 | 1999 | 1980 | 1999 | 1971 | 1985 | 1990 | 1989 |
| Mean Precipitation (in.) | 11.31 | 9.61 | 7.88 | 5.73 | 3.99 | 2.68 | 1.03 | 1.13 | 2.44 | 5.23 | 12.19 | 12.75 | 75.97 |
| Highest Precipitation (in.) | 20.15 | 21.45 | 13.20 | 11.72 | 7.19 | 7.31 | 5.03 | 3.46 | 6.11 | 12.45 | 25.04 | 30.64 | 30.64 |
| Year Highest Occurred | 1971 | 1986 | 1983 | 1993 | 1998 | 1981 | 1983 | 1978 | 1971 | 1997 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.23 | 2.37 | 1.63 | 2.01 | 0.54 | 0.66 | 0.00 | 0.01 | 0.00 | 0.28 | 3.08 | 1.23 | 0.00 |
| Year Lowest Occurred | 1985 | 1973 | 1992 | 1999 | 1982 | 1986 | 1984 | 1992 | 1999 | 1987 | 1993 | 1976 | 1984 |
| Heating Degree Days (F) | 975. | 794. | 751. | 583. | 401. | 206. | 87. | 75. | 201. | 450. | 762. | 974. | 6259. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 3. | 16. | 86. | 76. | 36. | 2. | 0. | 0. | 219. |