| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 31.0 | 36.4 | 46.7 | 56.4 | 66.5 | 78.1 | 84.8 | 83.3 | 73.2 | 60.7 | 43.0 | 32.7 | 57.7 |
| Highest Mean Max. Temperature (F) | 40.7 | 46.5 | 55.7 | 63.9 | 72.4 | 85.2 | 89.9 | 87.8 | 80.3 | 69.0 | 57.1 | 44.2 | 89.9 |
| Year Highest Occurred | 1998 | 1995 | 1999 | 1992 | 2000 | 1988 | 2000 | 1996 | 1998 | 1988 | 1999 | 1995 | 2000 |
| Lowest Mean Max. Temperature (F) | 16.1 | 24.4 | 39.3 | 47.7 | 59.8 | 72.3 | 80.9 | 79.8 | 66.1 | 50.1 | 32.4 | 19.5 | 16.1 |
| Year Lowest Occurred | 1984 | 1989 | 1984 | 1973 | 1983 | 1975 | 1992 | 1976 | 1985 | 1984 | 2000 | 1978 | 1984 |
| Mean Temperature (F) | 16.7 | 21.4 | 32.6 | 41.1 | 50.3 | 59.6 | 66.1 | 64.5 | 54.5 | 43.1 | 29.1 | 18.2 | 41.4 |
| Highest Mean Temperature (F) | 27.0 | 32.2 | 38.4 | 46.3 | 55.0 | 65.1 | 68.4 | 68.4 | 60.8 | 47.5 | 35.7 | 27.8 | 68.4 |
| Year Highest Occurred | 1998 | 1995 | 1986 | 1992 | 1992 | 1988 | 1988 | 1983 | 1998 | 1988 | 1995 | 1995 | 1988 |
| Lowest Mean Temperature (F) | 1.2 | 9.4 | 26.1 | 35.3 | 45.7 | 54.8 | 61.6 | 61.0 | 48.2 | 38.0 | 17.4 | 7.2 | 1.2 |
| Year Lowest Occurred | 1984 | 1989 | 1984 | 1975 | 1983 | 1998 | 1993 | 1974 | 1971 | 1984 | 2000 | 1978 | 1984 |
| Mean Min. Temperature (F) | 2.3 | 6.3 | 18.5 | 25.7 | 34.0 | 41.0 | 47.4 | 45.7 | 35.7 | 25.5 | 15.2 | 3.7 | 25.1 |
| Highest Mean Min. Temperature (F) | 13.6 | 18.7 | 23.7 | 30.1 | 39.0 | 46.5 | 51.1 | 50.3 | 41.6 | 31.9 | 20.7 | 13.2 | 51.1 |
| Year Highest Occurred | 1999 | 1998 | 1978 | 1981 | 1992 | 1977 | 1985 | 1983 | 1997 | 1972 | 1981 | 1977 | 1985 |
| Lowest Mean Min. Temperature (F) | -13.8 | -11.0 | 12.4 | 21.9 | 31.0 | 36.0 | 41.5 | 41.3 | 28.4 | 16.4 | 2.4 | -7.1 | -13.8 |
| Year Lowest Occurred | 1984 | 1985 | 1976 | 1971 | 1972 | 1998 | 1993 | 1974 | 1971 | 1999 | 2000 | 1972 | 1984 |
| Mean Precipitation (in.) | 0.86 | 0.81 | 1.16 | 1.41 | 1.39 | 0.82 | 1.02 | 0.84 | 1.05 | 1.44 | 1.14 | 0.79 | 12.73 |
| Highest Precipitation (in.) | 2.21 | 2.12 | 4.11 | 5.17 | 5.15 | 3.22 | 2.92 | 2.73 | 4.02 | 3.23 | 2.81 | 3.25 | 5.17 |
| Year Highest Occurred | 1997 | 1990 | 1979 | 1999 | 1995 | 1998 | 1985 | 1997 | 1997 | 1981 | 1978 | 1983 | 1999 |
| Lowest Precipitation (in.) | 0.19 | 0.14 | 0.29 | 0.14 | 0.03 | 0.04 | 0.00 | 0.05 | 0.10 | 0.00 | 0.22 | 0.08 | 0.00 |
| Year Lowest Occurred | 1972 | 1973 | 1983 | 1989 | 1989 | 1971 | 1994 | 1985 | 1987 | 1988 | 1976 | 1976 | 1994 |
| Heating Degree Days (F) | 1499. | 1223. | 1005. | 719. | 457. | 188. | 41. | 76. | 325. | 678. | 1076. | 1451. | 8738. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 24. | 75. | 61. | 8. | 0. | 0. | 0. | 168. |