| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 39.2 | 46.0 | 55.6 | 63.8 | 73.7 | 85.6 | 93.6 | 91.4 | 81.0 | 67.0 | 50.9 | 40.8 | 65.7 |
| Highest Mean Max. Temperature (F) | 49.0 | 56.3 | 62.3 | 72.4 | 79.4 | 92.4 | 97.0 | 94.4 | 86.2 | 76.1 | 62.3 | 49.3 | 97.0 |
| Year Highest Occurred | 1998 | 1995 | 1972 | 1987 | 2000 | 1974 | 1989 | 1994 | 1979 | 1988 | 1995 | 1977 | 1989 |
| Lowest Mean Max. Temperature (F) | 27.5 | 33.3 | 47.3 | 53.8 | 64.9 | 77.4 | 90.1 | 87.9 | 74.0 | 59.5 | 42.7 | 32.2 | 27.5 |
| Year Lowest Occurred | 1984 | 1993 | 1973 | 1975 | 1977 | 1995 | 1987 | 1984 | 1982 | 1984 | 2000 | 1985 | 1984 |
| Mean Temperature (F) | 27.1 | 33.3 | 41.7 | 48.6 | 57.5 | 67.7 | 75.0 | 73.1 | 63.3 | 50.8 | 37.7 | 28.1 | 50.3 |
| Highest Mean Temperature (F) | 35.3 | 40.4 | 47.2 | 54.9 | 62.2 | 72.3 | 77.4 | 76.3 | 67.5 | 57.3 | 44.1 | 35.9 | 77.4 |
| Year Highest Occurred | 1998 | 1995 | 1986 | 1992 | 2000 | 1977 | 1989 | 1986 | 1990 | 1988 | 1995 | 1977 | 1989 |
| Lowest Mean Temperature (F) | 16.2 | 21.6 | 35.0 | 40.5 | 51.8 | 62.2 | 71.4 | 69.6 | 58.4 | 45.7 | 31.0 | 19.4 | 16.2 |
| Year Lowest Occurred | 1984 | 1984 | 1977 | 1975 | 1975 | 1995 | 1993 | 1980 | 1986 | 1984 | 2000 | 1990 | 1984 |
| Mean Min. Temperature (F) | 15.0 | 20.5 | 27.8 | 33.3 | 41.2 | 49.7 | 56.3 | 54.7 | 45.5 | 34.5 | 24.4 | 15.4 | 34.9 |
| Highest Mean Min. Temperature (F) | 23.3 | 28.8 | 34.4 | 37.9 | 45.0 | 54.8 | 58.7 | 58.7 | 50.1 | 38.9 | 28.1 | 22.6 | 58.7 |
| Year Highest Occurred | 1978 | 1978 | 1978 | 1992 | 2000 | 1977 | 1998 | 1971 | 1998 | 1972 | 1998 | 1977 | 1971 |
| Lowest Mean Min. Temperature (F) | 4.9 | 8.9 | 20.1 | 27.2 | 35.6 | 44.2 | 51.5 | 49.5 | 41.8 | 31.1 | 19.0 | 4.1 | 4.1 |
| Year Lowest Occurred | 1984 | 1984 | 1977 | 1975 | 1975 | 1979 | 1993 | 1980 | 1986 | 1995 | 1992 | 1990 | 1990 |
| Mean Precipitation (in.) | 0.47 | 0.47 | 0.59 | 0.70 | 1.06 | 0.53 | 0.60 | 0.59 | 0.72 | 0.76 | 0.46 | 0.23 | 7.18 |
| Highest Precipitation (in.) | 1.62 | 1.69 | 1.50 | 1.67 | 4.24 | 2.68 | 2.66 | 2.27 | 4.58 | 2.57 | 1.60 | 0.94 | 4.58 |
| Year Highest Occurred | 1997 | 1998 | 1996 | 1971 | 1977 | 1995 | 1975 | 1983 | 1982 | 1981 | 1978 | 1983 | 1982 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.04 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1989 | 1977 | 1997 | 1992 | 1972 | 1996 | 1991 | 1978 | 1987 | 1999 | 1999 | 1989 | 1989 |
| Heating Degree Days (F) | 1175. | 888. | 724. | 496. | 255. | 62. | 1. | 4. | 106. | 442. | 819. | 1143. | 6115. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 21. | 141. | 310. | 254. | 54. | 1. | 0. | 0. | 783. |