| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 44.6 | 48.6 | 53.1 | 58.5 | 64.7 | 69.5 | 74.1 | 75.3 | 70.0 | 59.5 | 49.9 | 45.1 | 59.4 |
| Highest Mean Max. Temperature (F) | 50.1 | 53.0 | 58.7 | 62.2 | 71.1 | 74.2 | 80.6 | 80.6 | 74.8 | 65.4 | 54.7 | 49.0 | 80.6 |
| Year Highest Occurred | 1995 | 1991 | 1992 | 1977 | 1992 | 1982 | 1985 | 1986 | 1974 | 1987 | 1997 | 1980 | 1985 |
| Lowest Mean Max. Temperature (F) | 40.4 | 43.9 | 47.4 | 53.3 | 60.4 | 64.3 | 67.2 | 68.3 | 64.6 | 56.2 | 42.1 | 39.6 | 39.6 |
| Year Lowest Occurred | 1980 | 1989 | 1971 | 1972 | 1996 | 1971 | 1993 | 1976 | 1978 | 1975 | 1985 | 1990 | 1990 |
| Mean Temperature (F) | 39.5 | 42.3 | 45.3 | 49.3 | 55.0 | 59.7 | 63.6 | 64.8 | 60.0 | 51.8 | 44.4 | 40.1 | 51.3 |
| Highest Mean Temperature (F) | 44.1 | 46.1 | 49.1 | 51.8 | 59.1 | 63.5 | 67.0 | 68.1 | 62.8 | 54.7 | 48.5 | 44.1 | 68.1 |
| Year Highest Occurred | 1995 | 1991 | 1992 | 1989 | 1993 | 1992 | 1985 | 1977 | 1974 | 1988 | 1995 | 1980 | 1977 |
| Lowest Mean Temperature (F) | 34.5 | 36.8 | 40.8 | 45.1 | 51.8 | 55.1 | 60.6 | 61.3 | 56.6 | 49.0 | 36.6 | 35.2 | 34.5 |
| Year Lowest Occurred | 1972 | 1989 | 1971 | 1972 | 1999 | 1971 | 1993 | 1973 | 1972 | 1971 | 1985 | 1990 | 1972 |
| Mean Min. Temperature (F) | 34.3 | 35.9 | 37.4 | 40.0 | 45.2 | 49.9 | 53.1 | 54.2 | 49.9 | 44.1 | 38.9 | 35.1 | 43.2 |
| Highest Mean Min. Temperature (F) | 38.2 | 39.6 | 40.7 | 43.2 | 49.3 | 53.0 | 56.0 | 57.0 | 53.0 | 49.1 | 42.7 | 39.2 | 57.0 |
| Year Highest Occurred | 1994 | 1983 | 1986 | 1994 | 1993 | 1992 | 1998 | 1977 | 1990 | 1988 | 1995 | 1989 | 1977 |
| Lowest Mean Min. Temperature (F) | 27.7 | 29.8 | 34.1 | 35.4 | 41.6 | 45.8 | 50.5 | 51.6 | 45.4 | 39.8 | 31.1 | 30.2 | 27.7 |
| Year Lowest Occurred | 1972 | 1989 | 1971 | 1971 | 1999 | 1971 | 1971 | 1973 | 1971 | 1972 | 1985 | 1971 | 1972 |
| Mean Precipitation (in.) | 7.66 | 6.84 | 5.91 | 3.61 | 2.31 | 1.79 | 0.93 | 1.06 | 1.94 | 4.43 | 8.29 | 8.52 | 53.29 |
| Highest Precipitation (in.) | 13.74 | 13.16 | 12.17 | 8.62 | 5.50 | 3.52 | 2.93 | 4.51 | 7.98 | 11.09 | 15.28 | 17.50 | 17.50 |
| Year Highest Occurred | 1990 | 1999 | 1971 | 1991 | 1984 | 1984 | 1972 | 1977 | 1978 | 1975 | 1983 | 1994 | 1994 |
| Lowest Precipitation (in.) | 0.33 | 0.15 | 1.03 | 1.29 | 0.09 | 0.20 | 0.00 | 0.06 | 0.00 | 0.37 | 1.99 | 1.62 | 0.00 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1977 | 1992 | 1987 | 1984 | 1984 | 1991 | 1987 | 1976 | 1978 | 1984 |
| Heating Degree Days (F) | 793. | 638. | 613. | 473. | 312. | 169. | 80. | 60. | 164. | 410. | 617. | 772. | 5101. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 10. | 37. | 52. | 13. | 0. | 0. | 0. | 113. |