| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 36.6 | 42.8 | 51.9 | 60.2 | 69.9 | 80.9 | 89.9 | 88.3 | 78.0 | 64.8 | 48.7 | 38.3 | 62.5 |
| Highest Mean Max. Temperature (F) | 43.7 | 51.6 | 59.5 | 69.0 | 77.3 | 87.1 | 94.6 | 92.6 | 84.2 | 75.2 | 59.9 | 44.9 | 94.6 |
| Year Highest Occurred | 1994 | 1995 | 1986 | 1992 | 1992 | 1974 | 1989 | 1994 | 1979 | 1988 | 1999 | 1981 | 1989 |
| Lowest Mean Max. Temperature (F) | 28.2 | 33.0 | 45.5 | 51.4 | 63.7 | 73.7 | 82.4 | 83.7 | 71.2 | 56.8 | 41.5 | 29.8 | 28.2 |
| Year Lowest Occurred | 1979 | 1984 | 1985 | 1975 | 1977 | 1998 | 1993 | 1976 | 1986 | 1971 | 2000 | 1972 | 1979 |
| Mean Temperature (F) | 27.6 | 32.7 | 41.1 | 48.5 | 56.8 | 66.2 | 74.2 | 72.8 | 63.3 | 51.4 | 38.3 | 28.7 | 50.1 |
| Highest Mean Temperature (F) | 34.8 | 41.0 | 48.0 | 55.5 | 62.5 | 71.1 | 78.1 | 76.6 | 69.9 | 59.0 | 46.5 | 35.2 | 78.1 |
| Year Highest Occurred | 1999 | 1995 | 1986 | 1992 | 1992 | 1986 | 1989 | 2000 | 1990 | 1988 | 1999 | 1995 | 1989 |
| Lowest Mean Temperature (F) | 18.8 | 22.3 | 35.3 | 41.9 | 52.1 | 61.6 | 67.3 | 68.5 | 57.6 | 45.9 | 31.8 | 19.8 | 18.8 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1975 | 1977 | 1975 | 1993 | 1976 | 1985 | 1984 | 2000 | 1972 | 1979 |
| Mean Min. Temperature (F) | 18.6 | 22.6 | 30.3 | 36.8 | 43.7 | 51.4 | 58.5 | 57.2 | 48.5 | 38.0 | 27.8 | 19.0 | 37.7 |
| Highest Mean Min. Temperature (F) | 27.4 | 30.6 | 36.5 | 41.9 | 47.9 | 55.8 | 62.7 | 60.9 | 55.6 | 42.8 | 33.1 | 25.6 | 62.7 |
| Year Highest Occurred | 2000 | 2000 | 1986 | 1992 | 1987 | 1986 | 1998 | 2000 | 1990 | 1988 | 1999 | 1977 | 1998 |
| Lowest Mean Min. Temperature (F) | 9.3 | 11.4 | 24.4 | 32.4 | 38.3 | 47.1 | 52.1 | 52.4 | 43.3 | 34.3 | 21.1 | 9.8 | 9.3 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1975 | 1978 | 1980 | 1993 | 1985 | 1985 | 1984 | 1993 | 1990 | 1979 |
| Mean Precipitation (in.) | 1.76 | 1.87 | 2.29 | 2.31 | 2.70 | 1.07 | 0.76 | 0.91 | 1.65 | 2.11 | 1.77 | 1.55 | 20.75 |
| Highest Precipitation (in.) | 4.06 | 3.65 | 4.84 | 5.84 | 6.95 | 3.11 | 3.30 | 4.41 | 6.02 | 5.55 | 4.12 | 6.57 | 6.95 |
| Year Highest Occurred | 1980 | 1978 | 1983 | 1986 | 1977 | 1984 | 1984 | 1983 | 1982 | 1981 | 1988 | 1983 | 1977 |
| Lowest Precipitation (in.) | 0.33 | 0.10 | 0.70 | 0.25 | 0.22 | 0.04 | 0.00 | 0.07 | 0.00 | 0.00 | 0.03 | 0.07 | 0.00 |
| Year Lowest Occurred | 1976 | 1988 | 1971 | 1992 | 1972 | 1978 | 1988 | 1985 | 1974 | 1978 | 1976 | 1976 | 1988 |
| Heating Degree Days (F) | 1159. | 904. | 741. | 497. | 272. | 77. | 5. | 9. | 124. | 425. | 802. | 1127. | 6142. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 17. | 112. | 291. | 249. | 72. | 3. | 0. | 0. | 746. |