| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 41.8 | 45.7 | 51.1 | 58.5 | 67.5 | 76.4 | 84.4 | 83.8 | 77.3 | 66.0 | 49.8 | 42.0 | 62.0 |
| Highest Mean Max. Temperature (F) | 47.2 | 54.3 | 58.6 | 68.1 | 77.2 | 83.0 | 89.2 | 88.4 | 85.4 | 77.3 | 61.1 | 50.3 | 89.2 |
| Year Highest Occurred | 1976 | 1991 | 1997 | 1987 | 1992 | 1985 | 1994 | 1981 | 1974 | 1988 | 1976 | 1976 | 1994 |
| Lowest Mean Max. Temperature (F) | 35.0 | 33.6 | 43.2 | 48.8 | 50.1 | 67.2 | 79.1 | 76.4 | 68.2 | 57.4 | 37.8 | 36.0 | 33.6 |
| Year Lowest Occurred | 1993 | 1998 | 1991 | 1975 | 1998 | 1998 | 1983 | 1976 | 1986 | 1998 | 1994 | 1997 | 1998 |
| Mean Temperature (F) | 31.0 | 34.2 | 38.6 | 43.9 | 51.4 | 59.0 | 65.1 | 64.0 | 58.2 | 49.1 | 38.0 | 31.4 | 47.0 |
| Highest Mean Temperature (F) | 36.3 | 40.0 | 43.8 | 49.5 | 58.7 | 64.3 | 69.2 | 67.6 | 62.4 | 56.0 | 43.4 | 36.4 | 69.2 |
| Year Highest Occurred | 1986 | 1991 | 1997 | 1987 | 1992 | 1985 | 1996 | 1988 | 1991 | 1988 | 1995 | 1981 | 1996 |
| Lowest Mean Temperature (F) | 24.8 | 28.0 | 33.5 | 36.4 | 40.8 | 53.0 | 59.3 | 59.1 | 52.4 | 42.9 | 29.3 | 23.4 | 23.4 |
| Year Lowest Occurred | 1993 | 1990 | 1991 | 1975 | 1998 | 1998 | 1983 | 1976 | 1986 | 1998 | 1994 | 1990 | 1990 |
| Mean Min. Temperature (F) | 20.1 | 22.7 | 26.1 | 29.3 | 35.2 | 41.5 | 45.8 | 44.1 | 39.0 | 32.2 | 26.1 | 20.7 | 31.9 |
| Highest Mean Min. Temperature (F) | 27.5 | 28.1 | 29.5 | 34.1 | 41.0 | 46.0 | 51.0 | 47.2 | 42.0 | 36.0 | 31.2 | 28.7 | 51.0 |
| Year Highest Occurred | 1995 | 2000 | 1989 | 1990 | 1997 | 1977 | 1996 | 1988 | 1991 | 1993 | 1981 | 1981 | 1996 |
| Lowest Mean Min. Temperature (F) | 12.9 | 13.0 | 22.1 | 23.9 | 31.0 | 37.2 | 39.4 | 41.3 | 35.7 | 28.1 | 20.8 | 10.3 | 10.3 |
| Year Lowest Occurred | 1972 | 1990 | 1973 | 1975 | 1999 | 1980 | 1983 | 1980 | 1978 | 1997 | 1994 | 1990 | 1990 |
| Mean Precipitation (in.) | 5.91 | 5.62 | 4.90 | 2.04 | 1.59 | 0.79 | 0.37 | 0.39 | 0.90 | 2.00 | 3.84 | 4.62 | 32.97 |
| Highest Precipitation (in.) | 23.41 | 15.22 | 19.43 | 5.53 | 5.06 | 2.28 | 1.04 | 2.29 | 3.73 | 6.78 | 11.90 | 14.40 | 23.41 |
| Year Highest Occurred | 1995 | 1986 | 1995 | 1995 | 1998 | 1998 | 1974 | 1976 | 1986 | 1981 | 1981 | 1996 | 1995 |
| Lowest Precipitation (in.) | 0.22 | 0.26 | 0.47 | 0.19 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.12 | 0.00 | 0.00 |
| Year Lowest Occurred | 1976 | 1997 | 1977 | 1977 | 1975 | 1973 | 2000 | 2000 | 1999 | 1995 | 1975 | 1989 | 1973 |
| Heating Degree Days (F) | 1055. | 863. | 819. | 633. | 431. | 210. | 80. | 84. | 218. | 495. | 812. | 1043. | 6743. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 7. | 28. | 82. | 52. | 14. | 1. | 0. | 0. | 184. |