| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 46.4 | 51.1 | 57.7 | 65.2 | 74.4 | 85.0 | 89.1 | 86.5 | 79.2 | 68.7 | 54.9 | 46.5 | 67.1 |
| Highest Mean Max. Temperature (F) | 56.9 | 59.8 | 66.8 | 73.7 | 82.4 | 92.3 | 94.0 | 91.0 | 85.9 | 73.9 | 65.9 | 58.0 | 94.0 |
| Year Highest Occurred | 1986 | 1999 | 1989 | 1981 | 1996 | 1990 | 1980 | 1995 | 1998 | 1975 | 1999 | 1980 | 1980 |
| Lowest Mean Max. Temperature (F) | 37.4 | 43.0 | 50.8 | 56.2 | 67.7 | 78.8 | 85.2 | 82.6 | 74.7 | 60.4 | 43.2 | 33.1 | 33.1 |
| Year Lowest Occurred | 1979 | 1989 | 1984 | 1973 | 1995 | 1995 | 1990 | 1981 | 1971 | 1984 | 1972 | 1983 | 1983 |
| Mean Temperature (F) | 31.8 | 35.8 | 42.2 | 49.7 | 59.0 | 69.0 | 73.7 | 71.8 | 64.1 | 53.0 | 40.1 | 32.1 | 51.9 |
| Highest Mean Temperature (F) | 39.8 | 43.3 | 47.0 | 57.3 | 64.7 | 73.3 | 77.7 | 75.2 | 69.4 | 56.1 | 48.2 | 41.7 | 77.7 |
| Year Highest Occurred | 1986 | 2000 | 1989 | 1981 | 1996 | 1990 | 1980 | 1983 | 1998 | 1975 | 1999 | 1980 | 1980 |
| Lowest Mean Temperature (F) | 22.3 | 27.6 | 36.8 | 42.9 | 54.0 | 64.4 | 70.4 | 68.8 | 60.3 | 47.8 | 31.4 | 20.7 | 20.7 |
| Year Lowest Occurred | 1979 | 1989 | 1984 | 1973 | 1995 | 1995 | 1990 | 1993 | 1971 | 1984 | 1992 | 1983 | 1983 |
| Mean Min. Temperature (F) | 17.1 | 20.5 | 26.7 | 34.1 | 43.6 | 52.9 | 58.3 | 57.0 | 49.0 | 37.2 | 25.2 | 17.6 | 36.6 |
| Highest Mean Min. Temperature (F) | 23.5 | 26.9 | 30.1 | 40.8 | 47.6 | 56.9 | 61.7 | 60.4 | 52.9 | 40.7 | 31.6 | 25.5 | 61.7 |
| Year Highest Occurred | 1999 | 2000 | 1986 | 1981 | 1977 | 1981 | 1978 | 1983 | 1998 | 1981 | 1981 | 1980 | 1978 |
| Lowest Mean Min. Temperature (F) | 7.2 | 12.2 | 21.9 | 28.1 | 39.7 | 49.9 | 54.5 | 53.9 | 43.7 | 33.6 | 18.4 | 8.3 | 7.2 |
| Year Lowest Occurred | 1979 | 1989 | 1988 | 1997 | 1990 | 1992 | 1995 | 1992 | 1993 | 1993 | 1992 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.41 | 0.45 | 0.94 | 1.05 | 1.80 | 1.38 | 2.23 | 2.24 | 1.27 | 0.87 | 0.84 | 0.54 | 14.02 |
| Highest Precipitation (in.) | 1.03 | 1.27 | 2.58 | 4.21 | 4.88 | 3.96 | 6.55 | 4.95 | 2.97 | 2.83 | 2.37 | 1.81 | 6.55 |
| Year Highest Occurred | 1987 | 1990 | 2000 | 1999 | 1979 | 1978 | 1981 | 1997 | 1982 | 1998 | 1992 | 1973 | 1981 |
| Lowest Precipitation (in.) | 0.06 | 0.03 | 0.08 | 0.15 | 0.21 | 0.17 | 0.35 | 0.20 | 0.00 | 0.00 | 0.07 | 0.11 | 0.00 |
| Year Lowest Occurred | 1984 | 1976 | 1985 | 1978 | 1984 | 1980 | 1987 | 1973 | 1992 | 1995 | 2000 | 1977 | 1992 |
| Heating Degree Days (F) | 1032. | 818. | 706. | 464. | 211. | 30. | 1. | 6. | 97. | 374. | 750. | 1023. | 5512. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 3. | 24. | 149. | 270. | 214. | 69. | 1. | 0. | 0. | 730. |