| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 47.4 | 54.1 | 59.8 | 65.6 | 73.1 | 80.8 | 88.8 | 89.0 | 82.7 | 70.4 | 53.3 | 45.7 | 67.6 |
| Highest Mean Max. Temperature (F) | 51.7 | 60.3 | 65.8 | 74.1 | 80.8 | 89.0 | 94.6 | 96.1 | 89.6 | 81.8 | 60.3 | 51.1 | 96.1 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1987 | 1992 | 1987 | 1985 | 1986 | 1991 | 1988 | 1995 | 1977 | 1986 |
| Lowest Mean Max. Temperature (F) | 41.8 | 49.2 | 53.3 | 58.2 | 65.1 | 74.1 | 80.0 | 81.9 | 72.2 | 63.0 | 46.4 | 39.9 | 39.9 |
| Year Lowest Occurred | 1982 | 1974 | 1975 | 1975 | 1977 | 1980 | 1993 | 1976 | 1978 | 1975 | 1994 | 1985 | 1985 |
| Mean Temperature (F) | 39.3 | 43.4 | 47.0 | 50.7 | 56.8 | 63.1 | 69.2 | 69.0 | 62.9 | 53.9 | 44.0 | 38.5 | 53.2 |
| Highest Mean Temperature (F) | 43.9 | 48.8 | 51.1 | 56.1 | 61.2 | 68.8 | 73.0 | 73.3 | 67.4 | 60.8 | 50.1 | 44.0 | 73.3 |
| Year Highest Occurred | 1998 | 1995 | 1986 | 1990 | 1992 | 1987 | 1990 | 1986 | 1990 | 1988 | 1995 | 1995 | 1986 |
| Lowest Mean Temperature (F) | 35.5 | 38.4 | 43.3 | 44.5 | 51.7 | 58.9 | 62.2 | 65.3 | 57.5 | 50.1 | 37.0 | 32.7 | 32.7 |
| Year Lowest Occurred | 1982 | 1989 | 1975 | 1975 | 1977 | 1980 | 1993 | 1975 | 1978 | 1971 | 1985 | 1990 | 1990 |
| Mean Min. Temperature (F) | 31.1 | 32.7 | 34.1 | 35.8 | 40.5 | 45.4 | 49.5 | 48.9 | 43.0 | 37.4 | 34.6 | 31.3 | 38.7 |
| Highest Mean Min. Temperature (F) | 37.8 | 38.3 | 39.7 | 40.2 | 44.1 | 49.2 | 53.7 | 52.7 | 46.6 | 42.5 | 40.2 | 37.3 | 53.7 |
| Year Highest Occurred | 1998 | 1995 | 1993 | 1989 | 1998 | 1992 | 1998 | 1977 | 1990 | 1979 | 1999 | 1995 | 1998 |
| Lowest Mean Min. Temperature (F) | 25.5 | 25.9 | 29.2 | 30.8 | 37.9 | 42.3 | 44.5 | 45.4 | 40.1 | 32.9 | 25.5 | 23.5 | 23.5 |
| Year Lowest Occurred | 1991 | 1989 | 1985 | 1975 | 1976 | 1976 | 1993 | 1980 | 1993 | 1974 | 1993 | 1990 | 1990 |
| Mean Precipitation (in.) | 4.96 | 4.36 | 3.66 | 2.02 | 1.21 | 0.53 | 0.37 | 0.45 | 0.87 | 2.07 | 5.12 | 5.40 | 31.02 |
| Highest Precipitation (in.) | 11.89 | 10.68 | 8.82 | 4.60 | 4.08 | 2.72 | 2.77 | 3.33 | 4.19 | 6.10 | 15.15 | 20.23 | 20.23 |
| Year Highest Occurred | 1995 | 1983 | 1983 | 1982 | 1990 | 1982 | 1992 | 1976 | 1977 | 1979 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.15 | 0.18 | 1.00 | 0.31 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.67 | 0.65 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1988 | 1987 | 1982 | 2000 | 1998 | 1998 | 1999 | 1988 | 1976 | 1976 | 1982 |
| Heating Degree Days (F) | 799. | 605. | 559. | 430. | 258. | 110. | 30. | 23. | 121. | 347. | 632. | 821. | 4735. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 4. | 52. | 158. | 146. | 55. | 3. | 0. | 0. | 418. |