| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 31.7 | 35.1 | 41.9 | 50.2 | 60.8 | 72.6 | 79.1 | 77.4 | 68.3 | 56.1 | 40.5 | 32.6 | 53.9 |
| Highest Mean Max. Temperature (F) | 41.1 | 43.1 | 51.0 | 58.0 | 65.9 | 79.3 | 83.3 | 81.5 | 75.0 | 62.2 | 54.7 | 44.9 | 83.3 |
| Year Highest Occurred | 1986 | 2000 | 1986 | 1992 | 1994 | 1988 | 2000 | 2000 | 1998 | 1988 | 1999 | 1980 | 2000 |
| Lowest Mean Max. Temperature (F) | 21.0 | 22.4 | 33.8 | 38.4 | 53.0 | 66.4 | 73.8 | 74.2 | 63.7 | 47.6 | 26.3 | 23.2 | 21.0 |
| Year Lowest Occurred | 1979 | 1989 | 1973 | 1983 | 1995 | 1998 | 1992 | 1992 | 1985 | 1984 | 2000 | 1983 | 1979 |
| Mean Temperature (F) | 20.4 | 23.4 | 30.0 | 37.2 | 47.0 | 57.1 | 63.2 | 61.7 | 52.9 | 41.9 | 28.4 | 21.3 | 40.4 |
| Highest Mean Temperature (F) | 28.4 | 31.2 | 37.6 | 44.1 | 51.1 | 63.4 | 66.2 | 65.5 | 59.2 | 46.9 | 38.4 | 32.8 | 66.2 |
| Year Highest Occurred | 1986 | 2000 | 1986 | 1981 | 1994 | 1988 | 2000 | 2000 | 1998 | 1988 | 1999 | 1980 | 2000 |
| Lowest Mean Temperature (F) | 9.2 | 12.2 | 23.5 | 28.1 | 41.7 | 52.7 | 59.8 | 58.3 | 48.4 | 36.0 | 14.4 | 12.7 | 9.2 |
| Year Lowest Occurred | 1979 | 1989 | 1973 | 1983 | 1983 | 1998 | 1992 | 1974 | 1974 | 1984 | 2000 | 1978 | 1979 |
| Mean Min. Temperature (F) | 9.0 | 11.6 | 18.1 | 24.1 | 33.2 | 41.6 | 47.3 | 46.0 | 37.4 | 27.6 | 16.3 | 9.9 | 26.8 |
| Highest Mean Min. Temperature (F) | 16.4 | 19.2 | 24.1 | 30.3 | 36.5 | 47.5 | 50.9 | 49.7 | 43.4 | 31.5 | 25.7 | 20.6 | 50.9 |
| Year Highest Occurred | 1998 | 2000 | 1986 | 1981 | 2000 | 1988 | 1998 | 1982 | 1998 | 1988 | 1998 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -2.5 | 1.7 | 12.3 | 17.7 | 29.5 | 37.5 | 44.2 | 40.9 | 31.5 | 22.3 | 2.5 | 1.5 | -2.5 |
| Year Lowest Occurred | 1979 | 1973 | 1977 | 1983 | 1983 | 1975 | 1993 | 1974 | 1974 | 1976 | 2000 | 1978 | 1979 |
| Mean Precipitation (in.) | 0.38 | 0.46 | 0.79 | 1.06 | 1.67 | 1.33 | 1.56 | 1.23 | 0.99 | 0.80 | 0.64 | 0.46 | 11.37 |
| Highest Precipitation (in.) | 1.05 | 1.58 | 2.43 | 3.71 | 3.85 | 4.75 | 4.43 | 2.25 | 2.36 | 2.69 | 2.62 | 1.87 | 4.75 |
| Year Highest Occurred | 1992 | 1993 | 1983 | 1983 | 2000 | 1991 | 1998 | 1979 | 1995 | 1998 | 1983 | 1982 | 1991 |
| Lowest Precipitation (in.) | 0.03 | 0.02 | 0.22 | 0.27 | 0.17 | 0.25 | 0.17 | 0.38 | 0.05 | 0.08 | 0.07 | 0.04 | 0.02 |
| Year Lowest Occurred | 1986 | 1999 | 1995 | 1989 | 1974 | 1990 | 1997 | 1985 | 1987 | 1971 | 2000 | 1980 | 1999 |
| Heating Degree Days (F) | 1383. | 1167. | 1086. | 837. | 559. | 249. | 90. | 124. | 369. | 719. | 1099. | 1356. | 9038. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 13. | 34. | 21. | 3. | 0. | 0. | 0. | 71. |