| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 25.7 | 29.1 | 38.6 | 49.3 | 61.7 | 71.6 | 77.2 | 75.5 | 68.3 | 56.0 | 42.9 | 30.2 | 52.2 |
| Highest Mean Max. Temperature (F) | 34.8 | 36.9 | 47.0 | 54.4 | 69.7 | 79.6 | 82.0 | 81.1 | 75.2 | 61.7 | 52.5 | 38.3 | 82.0 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1977 | 1998 | 1988 | 1983 | 1995 | 1998 | 1973 | 1999 | 1998 | 1983 |
| Lowest Mean Max. Temperature (F) | 15.1 | 21.0 | 32.5 | 44.3 | 54.2 | 66.9 | 70.2 | 71.6 | 62.6 | 51.8 | 35.3 | 18.6 | 15.1 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1975 | 1983 | 1972 | 1992 | 1992 | 1993 | 1981 | 1996 | 1983 | 1977 |
| Mean Temperature (F) | 18.0 | 21.2 | 30.9 | 41.5 | 52.7 | 62.4 | 68.6 | 67.6 | 59.9 | 48.0 | 35.5 | 23.4 | 44.1 |
| Highest Mean Temperature (F) | 26.8 | 31.5 | 38.9 | 45.6 | 59.8 | 68.5 | 73.0 | 73.5 | 64.5 | 54.5 | 42.9 | 30.4 | 73.5 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1999 | 1998 | 1987 | 1983 | 1995 | 1998 | 1971 | 1975 | 1982 | 1995 |
| Lowest Mean Temperature (F) | 5.7 | 11.3 | 24.6 | 37.1 | 47.2 | 57.9 | 62.7 | 63.2 | 54.7 | 44.0 | 28.7 | 11.1 | 5.7 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1996 | 1983 | 1982 | 1992 | 1992 | 1993 | 1988 | 1996 | 1989 | 1977 |
| Mean Min. Temperature (F) | 10.3 | 13.3 | 23.2 | 33.7 | 43.6 | 53.2 | 59.9 | 59.6 | 51.5 | 39.9 | 28.1 | 16.6 | 36.1 |
| Highest Mean Min. Temperature (F) | 19.5 | 26.1 | 30.7 | 37.9 | 49.8 | 59.1 | 64.0 | 65.8 | 55.6 | 47.9 | 34.8 | 25.8 | 65.8 |
| Year Highest Occurred | 1992 | 1998 | 2000 | 1999 | 1998 | 1987 | 1983 | 1995 | 1978 | 1971 | 1975 | 1987 | 1995 |
| Lowest Mean Min. Temperature (F) | -3.6 | 1.6 | 16.5 | 29.5 | 39.4 | 48.3 | 55.1 | 54.7 | 46.8 | 35.4 | 20.4 | 3.6 | -3.6 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1996 | 1997 | 1982 | 1992 | 1992 | 1993 | 1980 | 1976 | 1989 | 1977 |
| Mean Precipitation (in.) | 1.49 | 1.21 | 1.99 | 2.69 | 2.77 | 3.31 | 3.39 | 3.74 | 3.41 | 2.32 | 2.35 | 1.63 | 30.30 |
| Highest Precipitation (in.) | 3.09 | 2.92 | 5.74 | 5.44 | 7.94 | 10.15 | 7.51 | 7.39 | 10.45 | 4.95 | 5.92 | 4.08 | 10.45 |
| Year Highest Occurred | 1994 | 1977 | 1979 | 1981 | 1973 | 1990 | 1991 | 1975 | 1986 | 1984 | 1985 | 1971 | 1986 |
| Lowest Precipitation (in.) | 0.20 | 0.19 | 0.20 | 0.57 | 0.80 | 0.96 | 0.95 | 1.70 | 0.15 | 0.00 | 0.18 | 0.16 | 0.00 |
| Year Lowest Occurred | 1981 | 1995 | 1999 | 1997 | 1981 | 1995 | 1995 | 1976 | 1979 | 2000 | 1976 | 1994 | 2000 |
| Heating Degree Days (F) | 1458. | 1227. | 1058. | 704. | 392. | 139. | 32. | 46. | 178. | 529. | 885. | 1289. | 7937. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 10. | 60. | 141. | 127. | 24. | 0. | 0. | 0. | 362. |