| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 48.0 | 50.4 | 53.7 | 60.4 | 68.8 | 77.7 | 85.2 | 85.3 | 79.5 | 69.2 | 54.1 | 48.0 | 65.0 |
| Highest Mean Max. Temperature (F) | 55.0 | 61.8 | 61.3 | 71.5 | 77.3 | 83.8 | 90.2 | 90.2 | 86.0 | 80.8 | 68.2 | 58.8 | 90.2 |
| Year Highest Occurred | 1994 | 1991 | 1994 | 1987 | 1992 | 1985 | 1988 | 1981 | 1974 | 1988 | 1976 | 1976 | 1988 |
| Lowest Mean Max. Temperature (F) | 41.1 | 42.0 | 43.4 | 51.1 | 53.0 | 71.3 | 80.3 | 78.0 | 69.9 | 61.0 | 42.6 | 39.6 | 39.6 |
| Year Lowest Occurred | 1993 | 1998 | 1991 | 1975 | 1998 | 1998 | 1983 | 1976 | 1986 | 1984 | 1994 | 1971 | 1971 |
| Mean Temperature (F) | 38.6 | 40.1 | 42.8 | 47.8 | 54.8 | 62.6 | 69.0 | 68.6 | 63.7 | 55.2 | 43.5 | 38.7 | 52.1 |
| Highest Mean Temperature (F) | 43.6 | 47.7 | 49.2 | 56.4 | 62.7 | 67.7 | 74.3 | 73.1 | 69.3 | 64.6 | 53.2 | 45.9 | 74.3 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1987 | 1992 | 1987 | 1988 | 1988 | 1975 | 1988 | 1976 | 1989 | 1988 |
| Lowest Mean Temperature (F) | 32.8 | 35.5 | 35.5 | 39.7 | 44.5 | 57.7 | 63.4 | 63.2 | 57.5 | 48.7 | 35.3 | 30.2 | 30.2 |
| Year Lowest Occurred | 1973 | 1999 | 1991 | 1975 | 1998 | 1971 | 1983 | 1976 | 1986 | 1984 | 1994 | 1971 | 1971 |
| Mean Min. Temperature (F) | 29.1 | 29.8 | 31.8 | 35.1 | 40.7 | 47.4 | 52.7 | 51.9 | 47.9 | 41.1 | 32.8 | 29.4 | 39.1 |
| Highest Mean Min. Temperature (F) | 33.3 | 34.0 | 37.3 | 41.9 | 48.1 | 52.8 | 58.3 | 57.0 | 52.9 | 48.4 | 38.2 | 34.0 | 58.3 |
| Year Highest Occurred | 1986 | 1988 | 1986 | 1990 | 1992 | 1987 | 1988 | 1988 | 1975 | 1988 | 1976 | 1996 | 1988 |
| Lowest Mean Min. Temperature (F) | 23.4 | 25.3 | 27.1 | 28.3 | 34.0 | 40.9 | 46.5 | 48.3 | 43.4 | 34.4 | 27.9 | 20.8 | 20.8 |
| Year Lowest Occurred | 1972 | 1990 | 1977 | 1975 | 1977 | 1971 | 1983 | 1976 | 1978 | 1971 | 1994 | 1971 | 1971 |
| Mean Precipitation (in.) | 11.49 | 12.00 | 10.11 | 4.41 | 3.18 | 1.00 | 0.39 | 0.55 | 1.65 | 3.99 | 8.54 | 8.98 | 66.29 |
| Highest Precipitation (in.) | 31.91 | 39.52 | 28.16 | 12.62 | 9.84 | 3.14 | 5.46 | 4.12 | 8.73 | 12.38 | 28.72 | 29.26 | 39.52 |
| Year Highest Occurred | 1995 | 1986 | 1995 | 1982 | 1996 | 1995 | 1974 | 1976 | 1986 | 1989 | 1973 | 1996 | 1986 |
| Lowest Precipitation (in.) | 0.37 | 0.00 | 1.17 | 0.44 | 0.15 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.71 | 0.00 | 0.00 |
| Year Lowest Occurred | 1984 | 1995 | 1994 | 1977 | 1992 | 1994 | 1994 | 1998 | 1997 | 1978 | 1992 | 1989 | 1995 |
| Heating Degree Days (F) | 820. | 697. | 689. | 523. | 341. | 133. | 30. | 32. | 119. | 335. | 648. | 816. | 5183. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 5. | 22. | 60. | 153. | 144. | 78. | 29. | 1. | 0. | 492. |