| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 41.8 | 47.3 | 53.8 | 60.3 | 68.8 | 77.1 | 86.0 | 86.1 | 77.1 | 64.9 | 49.0 | 42.1 | 62.9 |
| Highest Mean Max. Temperature (F) | 49.4 | 57.3 | 60.7 | 70.3 | 77.8 | 85.7 | 93.6 | 92.8 | 84.9 | 77.2 | 54.9 | 49.3 | 93.6 |
| Year Highest Occurred | 1999 | 1991 | 1992 | 1987 | 1992 | 1986 | 1985 | 1981 | 1990 | 1988 | 1989 | 1980 | 1985 |
| Lowest Mean Max. Temperature (F) | 25.1 | 36.7 | 47.9 | 53.4 | 58.3 | 69.3 | 78.7 | 76.5 | 67.3 | 56.1 | 37.0 | 31.8 | 25.1 |
| Year Lowest Occurred | 1979 | 1989 | 1980 | 1975 | 1977 | 1980 | 1993 | 1976 | 1985 | 1971 | 1985 | 1985 | 1979 |
| Mean Temperature (F) | 33.0 | 37.3 | 42.3 | 47.3 | 54.5 | 62.1 | 69.1 | 68.9 | 60.7 | 50.7 | 39.4 | 33.4 | 49.9 |
| Highest Mean Temperature (F) | 39.6 | 45.2 | 46.7 | 53.3 | 59.4 | 68.9 | 75.6 | 73.8 | 66.3 | 60.5 | 44.7 | 39.2 | 75.6 |
| Year Highest Occurred | 1983 | 1991 | 1986 | 1987 | 1992 | 1986 | 1985 | 1986 | 1990 | 1988 | 1999 | 1980 | 1985 |
| Lowest Mean Temperature (F) | 16.6 | 25.8 | 38.1 | 41.5 | 48.5 | 56.1 | 62.4 | 62.8 | 54.1 | 43.4 | 26.9 | 23.9 | 16.6 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1975 | 1977 | 1980 | 1993 | 1980 | 1971 | 1971 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 24.1 | 27.2 | 30.8 | 34.2 | 40.2 | 47.0 | 52.1 | 51.7 | 44.3 | 36.4 | 29.7 | 24.6 | 36.9 |
| Highest Mean Min. Temperature (F) | 30.6 | 33.1 | 36.0 | 38.1 | 44.5 | 52.1 | 57.5 | 57.2 | 48.3 | 43.7 | 36.8 | 31.5 | 57.5 |
| Year Highest Occurred | 1983 | 1991 | 1983 | 1989 | 1987 | 1986 | 1985 | 1977 | 1998 | 1988 | 1991 | 1973 | 1985 |
| Lowest Mean Min. Temperature (F) | 8.0 | 14.9 | 26.0 | 29.6 | 36.3 | 40.2 | 46.1 | 45.1 | 38.7 | 30.8 | 16.7 | 13.5 | 8.0 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1975 | 1978 | 1991 | 1993 | 1980 | 1971 | 1971 | 1985 | 1990 | 1979 |
| Mean Precipitation (in.) | 0.87 | 0.62 | 1.00 | 1.22 | 1.65 | 1.13 | 0.61 | 0.65 | 0.67 | 0.80 | 1.12 | 0.99 | 11.33 |
| Highest Precipitation (in.) | 1.68 | 2.31 | 2.26 | 3.45 | 4.25 | 3.62 | 3.81 | 5.07 | 3.02 | 2.39 | 3.06 | 3.60 | 5.07 |
| Year Highest Occurred | 1980 | 1986 | 1983 | 1978 | 1998 | 1984 | 1987 | 1976 | 1982 | 1984 | 1973 | 1983 | 1976 |
| Lowest Precipitation (in.) | 0.23 | 0.00 | 0.21 | 0.02 | 0.49 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.16 | 0.20 | 0.00 |
| Year Lowest Occurred | 1984 | 1988 | 1988 | 1987 | 1975 | 1986 | 1988 | 1981 | 1999 | 1988 | 1987 | 1989 | 1988 |
| Heating Degree Days (F) | 994. | 777. | 703. | 534. | 332. | 154. | 38. | 48. | 186. | 448. | 770. | 982. | 5966. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 6. | 65. | 164. | 170. | 57. | 3. | 0. | 0. | 465. |