| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 25.3 | 31.0 | 42.4 | 56.6 | 69.5 | 78.9 | 82.8 | 79.9 | 71.6 | 59.9 | 43.5 | 30.3 | 56.0 |
| Highest Mean Max. Temperature (F) | 38.5 | 39.9 | 51.4 | 66.6 | 77.6 | 86.6 | 87.3 | 85.6 | 78.9 | 66.4 | 55.0 | 39.1 | 87.3 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1977 | 1977 | 1988 | 1988 | 1983 | 1998 | 1971 | 1999 | 1998 | 1988 |
| Lowest Mean Max. Temperature (F) | 13.8 | 21.7 | 35.0 | 49.2 | 61.9 | 74.5 | 77.4 | 75.5 | 65.0 | 54.4 | 35.9 | 19.3 | 13.8 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1975 | 1983 | 1982 | 1992 | 1997 | 1993 | 1980 | 1995 | 1983 | 1977 |
| Mean Temperature (F) | 14.9 | 20.3 | 32.1 | 45.1 | 57.5 | 66.7 | 71.1 | 68.4 | 59.8 | 48.1 | 33.9 | 20.9 | 44.9 |
| Highest Mean Temperature (F) | 27.5 | 32.5 | 40.1 | 52.0 | 63.2 | 70.8 | 74.4 | 73.9 | 64.8 | 55.1 | 42.2 | 28.6 | 74.4 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1977 | 1977 | 1988 | 1999 | 1995 | 1998 | 1971 | 1999 | 1998 | 1999 |
| Lowest Mean Temperature (F) | 1.3 | 9.1 | 24.6 | 39.5 | 51.8 | 61.9 | 66.4 | 63.9 | 54.4 | 42.7 | 25.4 | 7.4 | 1.3 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1975 | 1983 | 1982 | 1992 | 1977 | 1993 | 1976 | 1976 | 1983 | 1977 |
| Mean Min. Temperature (F) | 4.4 | 9.6 | 21.8 | 33.6 | 45.4 | 54.5 | 59.3 | 56.8 | 47.9 | 36.2 | 24.2 | 11.4 | 33.8 |
| Highest Mean Min. Temperature (F) | 16.5 | 25.1 | 29.1 | 39.2 | 51.8 | 58.3 | 63.7 | 64.8 | 52.9 | 43.9 | 30.3 | 21.5 | 64.8 |
| Year Highest Occurred | 1992 | 1998 | 1973 | 1986 | 1991 | 1995 | 1999 | 1995 | 1994 | 1971 | 1998 | 1987 | 1995 |
| Lowest Mean Min. Temperature (F) | -11.2 | -3.5 | 14.2 | 29.1 | 40.0 | 49.4 | 53.9 | 50.6 | 40.9 | 28.4 | 13.1 | -4.6 | -11.2 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1996 | 1976 | 1982 | 1985 | 1976 | 1976 | 1976 | 1976 | 1983 | 1977 |
| Mean Precipitation (in.) | 1.31 | 1.17 | 2.21 | 3.34 | 3.48 | 4.14 | 4.14 | 4.38 | 3.81 | 2.26 | 2.41 | 1.38 | 34.03 |
| Highest Precipitation (in.) | 2.63 | 2.78 | 4.53 | 8.05 | 7.35 | 8.93 | 10.75 | 10.70 | 14.77 | 4.57 | 5.42 | 2.95 | 14.77 |
| Year Highest Occurred | 1988 | 1981 | 1998 | 1973 | 1973 | 1984 | 1999 | 1980 | 1986 | 1984 | 1985 | 1977 | 1986 |
| Lowest Precipitation (in.) | 0.10 | 0.04 | 0.25 | 0.83 | 0.92 | 0.87 | 0.89 | 1.13 | 0.58 | 0.15 | 0.07 | 0.22 | 0.04 |
| Year Lowest Occurred | 1981 | 1987 | 1978 | 1989 | 1988 | 1988 | 1973 | 1976 | 1975 | 1975 | 1976 | 1993 | 1987 |
| Heating Degree Days (F) | 1555. | 1251. | 1020. | 597. | 271. | 53. | 11. | 43. | 182. | 527. | 934. | 1370. | 7814. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 37. | 104. | 199. | 147. | 25. | 1. | 0. | 0. | 514. |