| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 39.0 | 42.8 | 49.3 | 57.0 | 64.4 | 69.3 | 75.6 | 76.3 | 69.7 | 57.0 | 44.8 | 39.0 | 57.0 |
| Highest Mean Max. Temperature (F) | 47.6 | 48.4 | 60.8 | 61.8 | 70.9 | 75.8 | 85.5 | 83.2 | 77.8 | 63.4 | 50.4 | 44.1 | 85.5 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1980 | 1995 | 1992 | 1985 | 1986 | 1974 | 1987 | 1987 | 1974 | 1985 |
| Lowest Mean Max. Temperature (F) | 33.3 | 37.0 | 42.5 | 51.1 | 57.4 | 63.0 | 66.4 | 68.1 | 60.4 | 51.6 | 34.6 | 32.5 | 32.5 |
| Year Lowest Occurred | 1993 | 1989 | 1971 | 1972 | 1996 | 1971 | 1993 | 1976 | 1978 | 1990 | 1985 | 1990 | 1990 |
| Mean Temperature (F) | 34.6 | 37.2 | 41.8 | 47.6 | 54.1 | 58.9 | 63.9 | 64.6 | 59.4 | 49.8 | 40.2 | 35.1 | 48.9 |
| Highest Mean Temperature (F) | 42.6 | 42.9 | 50.3 | 51.5 | 59.7 | 64.1 | 68.9 | 69.3 | 64.2 | 53.9 | 45.4 | 39.2 | 69.3 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1987 | 1993 | 1992 | 1985 | 1986 | 1995 | 1987 | 1987 | 1989 | 1986 |
| Lowest Mean Temperature (F) | 28.7 | 30.6 | 36.3 | 42.6 | 49.7 | 54.2 | 59.5 | 59.3 | 54.3 | 46.1 | 29.8 | 28.0 | 28.0 |
| Year Lowest Occurred | 1993 | 1989 | 1971 | 1972 | 1984 | 1971 | 1993 | 1995 | 1978 | 1990 | 1985 | 1990 | 1990 |
| Mean Min. Temperature (F) | 30.2 | 31.5 | 34.3 | 38.1 | 43.7 | 48.4 | 52.1 | 52.9 | 49.1 | 42.5 | 35.5 | 31.1 | 40.8 |
| Highest Mean Min. Temperature (F) | 37.6 | 37.4 | 39.8 | 42.5 | 49.2 | 52.3 | 56.3 | 56.0 | 52.7 | 46.5 | 40.4 | 35.5 | 56.3 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1994 | 1993 | 1992 | 1998 | 1990 | 1990 | 1988 | 1987 | 1989 | 1998 |
| Lowest Mean Min. Temperature (F) | 24.2 | 24.1 | 30.0 | 33.3 | 40.4 | 45.2 | 49.7 | 49.4 | 45.3 | 39.3 | 25.0 | 23.5 | 23.5 |
| Year Lowest Occurred | 1993 | 1989 | 1976 | 1982 | 1999 | 1976 | 1976 | 1973 | 1972 | 1983 | 1985 | 1990 | 1990 |
| Mean Precipitation (in.) | 11.62 | 8.75 | 7.10 | 4.71 | 3.53 | 2.80 | 2.07 | 1.82 | 3.26 | 7.32 | 13.46 | 13.06 | 79.50 |
| Highest Precipitation (in.) | 26.07 | 18.17 | 15.93 | 10.09 | 8.55 | 7.56 | 6.70 | 4.47 | 9.37 | 15.74 | 31.62 | 23.63 | 31.62 |
| Year Highest Occurred | 1974 | 1972 | 1997 | 1981 | 1984 | 1981 | 1983 | 1976 | 1972 | 1985 | 1995 | 1979 | 1995 |
| Lowest Precipitation (in.) | 1.76 | 0.14 | 0.58 | 1.75 | 0.97 | 0.55 | 0.07 | 0.01 | 0.08 | 0.37 | 2.47 | 1.66 | 0.01 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1999 | 1995 | 1996 | 1984 | 1986 | 1975 | 1987 | 1979 | 1985 | 1986 |
| Heating Degree Days (F) | 942. | 779. | 720. | 523. | 344. | 201. | 94. | 88. | 203. | 473. | 746. | 930. | 6043. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 4. | 17. | 59. | 75. | 35. | 0. | 0. | 0. | 190. |