| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 20.4 | 27.7 | 39.4 | 56.6 | 70.7 | 79.4 | 83.5 | 81.4 | 72.5 | 59.5 | 39.1 | 24.9 | 54.6 |
| Highest Mean Max. Temperature (F) | 35.9 | 42.4 | 52.1 | 68.5 | 78.7 | 87.9 | 90.9 | 88.6 | 78.6 | 66.7 | 50.1 | 36.2 | 90.9 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1987 | 1977 | 1988 | 1988 | 1976 | 1998 | 1973 | 1999 | 1979 | 1988 |
| Lowest Mean Max. Temperature (F) | 4.3 | 17.5 | 30.3 | 44.1 | 63.3 | 72.2 | 72.6 | 74.9 | 64.7 | 53.3 | 28.1 | 10.2 | 4.3 |
| Year Lowest Occurred | 1982 | 1994 | 1984 | 1975 | 1996 | 1993 | 1992 | 1992 | 1985 | 1972 | 1996 | 1983 | 1982 |
| Mean Temperature (F) | 10.8 | 18.2 | 30.5 | 45.1 | 58.4 | 67.6 | 71.9 | 69.6 | 60.2 | 47.7 | 30.2 | 16.2 | 43.9 |
| Highest Mean Temperature (F) | 25.2 | 32.1 | 39.3 | 52.9 | 65.1 | 73.0 | 76.0 | 74.9 | 65.7 | 54.4 | 39.0 | 27.3 | 76.0 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1977 | 1988 | 1975 | 1976 | 1978 | 1973 | 1999 | 1997 | 1975 |
| Lowest Mean Temperature (F) | -6.0 | 4.8 | 22.5 | 37.7 | 52.9 | 62.7 | 63.7 | 64.0 | 54.5 | 42.8 | 20.9 | 0.8 | -6.0 |
| Year Lowest Occurred | 1982 | 1979 | 1984 | 1975 | 1997 | 1982 | 1992 | 1992 | 1993 | 1972 | 1996 | 1983 | 1982 |
| Mean Min. Temperature (F) | 1.1 | 8.7 | 21.5 | 33.6 | 46.0 | 55.7 | 60.2 | 57.8 | 47.8 | 35.9 | 21.3 | 7.4 | 33.1 |
| Highest Mean Min. Temperature (F) | 14.5 | 22.7 | 30.7 | 37.8 | 51.6 | 61.3 | 63.2 | 63.1 | 53.0 | 42.1 | 27.9 | 21.3 | 63.2 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1985 | 1977 | 1991 | 1987 | 1995 | 1978 | 1973 | 1999 | 1997 | 1987 |
| Lowest Mean Min. Temperature (F) | -16.2 | -8.9 | 13.6 | 29.5 | 39.1 | 49.4 | 51.7 | 52.7 | 41.3 | 30.9 | 13.6 | -8.5 | -16.2 |
| Year Lowest Occurred | 1982 | 1979 | 1975 | 1997 | 1983 | 1982 | 1971 | 1974 | 1984 | 1988 | 1996 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.91 | 0.91 | 1.64 | 2.24 | 3.17 | 4.23 | 3.43 | 3.14 | 2.26 | 1.97 | 1.46 | 0.71 | 26.07 |
| Highest Precipitation (in.) | 3.12 | 3.30 | 5.89 | 5.53 | 7.70 | 10.48 | 9.16 | 6.87 | 6.05 | 6.65 | 5.43 | 3.34 | 10.48 |
| Year Highest Occurred | 1982 | 1984 | 1977 | 1986 | 1993 | 1971 | 1991 | 1979 | 1978 | 1971 | 1983 | 1977 | 1971 |
| Lowest Precipitation (in.) | 0.00 | 0.05 | 0.23 | 0.15 | 0.94 | 0.48 | 0.12 | 0.36 | 0.40 | 0.08 | 0.04 | 0.00 | 0.00 |
| Year Lowest Occurred | 1998 | 1999 | 1971 | 1980 | 1976 | 1988 | 1975 | 2000 | 1979 | 1978 | 1980 | 1999 | 1998 |
| Heating Degree Days (F) | 1682. | 1312. | 1072. | 601. | 247. | 51. | 25. | 38. | 180. | 537. | 1044. | 1514. | 8303. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 3. | 40. | 126. | 237. | 180. | 35. | 1. | 0. | 0. | 622. |