| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 31.3 | 37.6 | 48.7 | 58.9 | 68.5 | 79.3 | 87.5 | 86.7 | 76.4 | 63.0 | 45.3 | 33.1 | 59.7 |
| Highest Mean Max. Temperature (F) | 39.9 | 46.3 | 57.6 | 68.8 | 76.8 | 85.1 | 92.9 | 92.7 | 83.3 | 72.8 | 57.2 | 40.8 | 92.9 |
| Year Highest Occurred | 1994 | 1995 | 1992 | 1987 | 1992 | 1977 | 2000 | 1994 | 1990 | 1988 | 1999 | 1976 | 2000 |
| Lowest Mean Max. Temperature (F) | 20.3 | 26.7 | 39.3 | 49.5 | 62.5 | 71.1 | 77.3 | 81.8 | 69.0 | 54.6 | 36.2 | 23.9 | 20.3 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1975 | 1995 | 1998 | 1993 | 1993 | 1986 | 1984 | 1994 | 1985 | 1979 |
| Mean Temperature (F) | 20.9 | 26.0 | 36.1 | 44.3 | 53.1 | 61.7 | 68.3 | 67.0 | 57.5 | 46.0 | 33.0 | 22.6 | 44.7 |
| Highest Mean Temperature (F) | 30.4 | 34.3 | 42.7 | 50.7 | 58.9 | 66.5 | 73.5 | 71.0 | 63.7 | 52.7 | 40.2 | 31.5 | 73.5 |
| Year Highest Occurred | 1994 | 2000 | 1992 | 1992 | 1992 | 1988 | 1998 | 2000 | 1990 | 1988 | 1999 | 1977 | 1998 |
| Lowest Mean Temperature (F) | 8.4 | 13.5 | 25.3 | 37.7 | 48.9 | 57.1 | 59.0 | 62.4 | 52.8 | 41.8 | 26.2 | 12.9 | 8.4 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1975 | 1975 | 1993 | 1993 | 1993 | 1971 | 1984 | 1994 | 1990 | 1979 |
| Mean Min. Temperature (F) | 10.4 | 14.4 | 23.4 | 29.6 | 37.6 | 44.0 | 49.1 | 47.2 | 38.5 | 28.9 | 20.7 | 12.0 | 29.7 |
| Highest Mean Min. Temperature (F) | 21.7 | 26.2 | 29.2 | 33.6 | 41.5 | 48.2 | 55.0 | 52.6 | 46.5 | 32.9 | 28.0 | 22.5 | 55.0 |
| Year Highest Occurred | 1978 | 1998 | 1986 | 1992 | 1987 | 1988 | 1998 | 1983 | 1998 | 1972 | 1998 | 1977 | 1998 |
| Lowest Mean Min. Temperature (F) | -3.6 | -0.1 | 11.3 | 24.7 | 34.1 | 39.9 | 40.7 | 42.7 | 33.5 | 24.0 | 11.9 | 0.7 | -3.6 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1982 | 1975 | 1978 | 1993 | 1978 | 1974 | 1976 | 1993 | 1990 | 1979 |
| Mean Precipitation (in.) | 1.60 | 1.65 | 1.89 | 1.98 | 2.32 | 1.21 | 0.87 | 0.85 | 1.29 | 1.78 | 1.40 | 1.50 | 18.34 |
| Highest Precipitation (in.) | 5.25 | 5.67 | 4.99 | 4.94 | 5.37 | 3.15 | 2.69 | 3.84 | 4.04 | 4.62 | 3.62 | 6.19 | 6.19 |
| Year Highest Occurred | 1997 | 1986 | 1982 | 1986 | 1980 | 1980 | 1997 | 1977 | 1982 | 1981 | 1983 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.29 | 0.04 | 0.55 | 0.31 | 0.26 | 0.01 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.04 | 0.00 |
| Year Lowest Occurred | 1984 | 1988 | 1987 | 1985 | 1972 | 1978 | 1988 | 1985 | 1987 | 1988 | 1976 | 1976 | 1988 |
| Heating Degree Days (F) | 1369. | 1093. | 898. | 622. | 374. | 142. | 41. | 57. | 245. | 591. | 960. | 1316. | 7708. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 2. | 42. | 145. | 116. | 18. | 0. | 0. | 0. | 323. |