| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 32.5 | 39.6 | 51.7 | 63.6 | 72.4 | 79.2 | 86.5 | 86.7 | 76.0 | 59.2 | 41.4 | 32.6 | 60.1 |
| Highest Mean Max. Temperature (F) | 39.1 | 46.6 | 60.8 | 70.8 | 78.2 | 88.0 | 96.5 | 93.4 | 83.6 | 65.3 | 49.5 | 39.5 | 96.5 |
| Year Highest Occurred | 1981 | 1983 | 1992 | 1983 | 1993 | 1982 | 1985 | 1971 | 1998 | 1974 | 1983 | 1982 | 1985 |
| Lowest Mean Max. Temperature (F) | 22.4 | 31.5 | 45.5 | 58.2 | 63.2 | 73.8 | 74.7 | 78.8 | 65.9 | 52.6 | 28.8 | 25.1 | 22.4 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1986 | 1996 | 1991 | 1993 | 1975 | 1985 | 1985 | 1985 | 1984 | 1979 |
| Mean Temperature (F) | 26.7 | 32.1 | 40.4 | 49.2 | 57.3 | 63.4 | 69.2 | 68.8 | 59.7 | 47.2 | 35.2 | 27.5 | 48.1 |
| Highest Mean Temperature (F) | 33.7 | 38.1 | 46.2 | 53.3 | 62.4 | 68.1 | 74.9 | 73.0 | 65.0 | 50.9 | 40.3 | 34.2 | 74.9 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1987 | 1993 | 1992 | 1985 | 1971 | 1998 | 1988 | 1999 | 1979 | 1985 |
| Lowest Mean Temperature (F) | 14.7 | 23.3 | 35.7 | 45.4 | 51.9 | 59.0 | 63.6 | 62.9 | 54.5 | 43.3 | 22.6 | 17.7 | 14.7 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1996 | 1981 | 1993 | 1975 | 1985 | 1984 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 20.8 | 24.5 | 29.0 | 34.8 | 42.1 | 47.6 | 51.8 | 50.8 | 43.3 | 35.1 | 28.9 | 22.3 | 35.9 |
| Highest Mean Min. Temperature (F) | 28.9 | 32.9 | 33.0 | 38.7 | 46.6 | 51.4 | 57.2 | 53.9 | 49.1 | 40.1 | 35.2 | 29.7 | 57.2 |
| Year Highest Occurred | 1992 | 1992 | 1998 | 1987 | 1993 | 1992 | 1998 | 1999 | 1997 | 1988 | 1987 | 1979 | 1998 |
| Lowest Mean Min. Temperature (F) | 6.9 | 15.0 | 24.5 | 29.0 | 37.9 | 42.6 | 46.6 | 45.9 | 37.7 | 29.1 | 16.3 | 9.3 | 6.9 |
| Year Lowest Occurred | 1979 | 1989 | 1982 | 1983 | 1999 | 1981 | 1982 | 1980 | 1983 | 1983 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 1.84 | 1.54 | 1.62 | 1.60 | 2.24 | 2.19 | 1.58 | 1.27 | 1.21 | 1.23 | 2.15 | 2.46 | 20.93 |
| Highest Precipitation (in.) | 2.98 | 3.40 | 3.49 | 2.53 | 6.48 | 4.13 | 3.39 | 4.25 | 3.69 | 2.96 | 4.93 | 4.33 | 6.48 |
| Year Highest Occurred | 1995 | 1979 | 1983 | 1984 | 1998 | 1992 | 1993 | 1976 | 1997 | 1996 | 1973 | 1973 | 1998 |
| Lowest Precipitation (in.) | 0.03 | 0.26 | 0.43 | 0.22 | 0.55 | 0.17 | 0.15 | 0.03 | 0.02 | 0.07 | 0.53 | 0.61 | 0.02 |
| Year Lowest Occurred | 1985 | 1993 | 1994 | 1977 | 1982 | 1974 | 1984 | 1986 | 1999 | 1974 | 1993 | 1985 | 1999 |
| Heating Degree Days (F) | 1189. | 923. | 765. | 474. | 252. | 106. | 32. | 38. | 201. | 554. | 896. | 1164. | 6594. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 11. | 58. | 161. | 154. | 40. | 0. | 0. | 0. | 424. |