| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 37.8 | 42.0 | 48.2 | 56.1 | 65.5 | 76.6 | 80.9 | 78.9 | 72.4 | 62.2 | 47.5 | 39.3 | 59.0 |
| Highest Mean Max. Temperature (F) | 44.9 | 50.0 | 55.9 | 64.3 | 74.4 | 82.5 | 85.1 | 84.3 | 77.9 | 69.5 | 59.4 | 48.4 | 85.1 |
| Year Highest Occurred | 1999 | 1995 | 1999 | 1989 | 1996 | 1990 | 2000 | 2000 | 1998 | 1979 | 1999 | 1980 | 2000 |
| Lowest Mean Max. Temperature (F) | 29.6 | 36.9 | 41.5 | 48.2 | 60.3 | 72.8 | 77.4 | 75.7 | 65.2 | 51.7 | 38.8 | 33.0 | 29.6 |
| Year Lowest Occurred | 1979 | 1985 | 1973 | 1973 | 1980 | 1979 | 1975 | 1974 | 1986 | 1984 | 1972 | 1978 | 1979 |
| Mean Temperature (F) | 20.7 | 25.3 | 33.0 | 40.0 | 48.5 | 57.2 | 63.1 | 62.0 | 54.6 | 44.6 | 31.6 | 23.1 | 42.0 |
| Highest Mean Temperature (F) | 27.9 | 33.1 | 38.6 | 45.4 | 53.2 | 60.8 | 65.6 | 65.9 | 58.5 | 48.4 | 37.9 | 31.5 | 65.9 |
| Year Highest Occurred | 1999 | 1995 | 1972 | 2000 | 1996 | 1990 | 1996 | 2000 | 1998 | 1988 | 1999 | 1980 | 2000 |
| Lowest Mean Temperature (F) | 14.5 | 18.9 | 28.5 | 34.8 | 44.0 | 54.9 | 60.5 | 58.9 | 50.5 | 40.2 | 26.5 | 17.2 | 14.5 |
| Year Lowest Occurred | 1979 | 1974 | 1975 | 1973 | 1971 | 1975 | 1992 | 1974 | 1971 | 1984 | 2000 | 1990 | 1979 |
| Mean Min. Temperature (F) | 3.5 | 8.5 | 17.7 | 23.9 | 31.4 | 37.8 | 45.2 | 45.0 | 36.7 | 26.9 | 15.7 | 6.8 | 24.9 |
| Highest Mean Min. Temperature (F) | 11.8 | 16.1 | 22.4 | 27.6 | 35.4 | 41.9 | 49.6 | 48.1 | 42.0 | 37.1 | 22.0 | 14.6 | 49.6 |
| Year Highest Occurred | 1980 | 2000 | 1978 | 1981 | 1979 | 1981 | 1977 | 1982 | 1997 | 1972 | 1978 | 1980 | 1977 |
| Lowest Mean Min. Temperature (F) | -5.2 | -1.2 | 11.0 | 17.0 | 25.4 | 33.5 | 41.1 | 41.2 | 30.7 | 21.0 | 10.9 | -0.9 | -5.2 |
| Year Lowest Occurred | 1971 | 1974 | 1988 | 1971 | 1971 | 1971 | 1993 | 1979 | 1987 | 1995 | 1975 | 1990 | 1971 |
| Mean Precipitation (in.) | 1.21 | 1.10 | 1.34 | 1.00 | 1.31 | 0.84 | 1.90 | 2.60 | 1.86 | 1.44 | 1.26 | 0.89 | 16.75 |
| Highest Precipitation (in.) | 3.66 | 5.35 | 4.60 | 4.06 | 4.13 | 3.09 | 4.21 | 5.04 | 4.48 | 4.31 | 3.43 | 3.16 | 5.35 |
| Year Highest Occurred | 1997 | 1982 | 1995 | 1999 | 1992 | 1988 | 1998 | 1993 | 1986 | 1972 | 1994 | 1990 | 1982 |
| Lowest Precipitation (in.) | 0.05 | 0.05 | 0.04 | 0.07 | 0.00 | 0.00 | 0.06 | 0.85 | 0.27 | 0.00 | 0.00 | 0.04 | 0.00 |
| Year Lowest Occurred | 1992 | 1972 | 1997 | 1989 | 1996 | 1998 | 1993 | 1978 | 1974 | 1995 | 1989 | 1999 | 1996 |
| Heating Degree Days (F) | 1375. | 1113. | 993. | 750. | 513. | 239. | 83. | 118. | 316. | 635. | 1002. | 1300. | 8437. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 5. | 22. | 22. | 2. | 0. | 0. | 0. | 51. |