| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 58.5 | 62.4 | 65.5 | 70.7 | 75.9 | 81.8 | 85.4 | 84.9 | 82.5 | 75.6 | 64.7 | 58.2 | 72.2 |
| Highest Mean Max. Temperature (F) | 63.4 | 67.4 | 72.4 | 76.7 | 82.1 | 88.6 | 90.7 | 88.3 | 91.4 | 79.9 | 70.3 | 63.3 | 91.4 |
| Year Highest Occurred | 1976 | 1991 | 1972 | 1987 | 1984 | 1981 | 1984 | 1998 | 1984 | 1978 | 1995 | 1979 | 1984 |
| Lowest Mean Max. Temperature (F) | 55.5 | 57.7 | 59.1 | 64.9 | 66.4 | 75.7 | 79.5 | 80.6 | 75.7 | 71.4 | 57.1 | 53.6 | 53.6 |
| Year Lowest Occurred | 1993 | 1989 | 1991 | 1975 | 1998 | 1998 | 1987 | 1991 | 1986 | 2000 | 1994 | 1990 | 1990 |
| Mean Temperature (F) | 48.7 | 51.8 | 54.2 | 57.6 | 62.1 | 66.9 | 70.3 | 69.9 | 67.9 | 62.1 | 53.6 | 48.2 | 59.4 |
| Highest Mean Temperature (F) | 52.6 | 54.6 | 58.6 | 61.5 | 66.7 | 71.6 | 74.7 | 72.0 | 73.5 | 65.1 | 58.3 | 52.8 | 74.7 |
| Year Highest Occurred | 1986 | 1991 | 1978 | 1989 | 1997 | 1981 | 1984 | 1998 | 1984 | 1991 | 1995 | 1977 | 1984 |
| Lowest Mean Temperature (F) | 45.2 | 47.3 | 50.1 | 52.9 | 56.8 | 63.7 | 66.1 | 68.2 | 62.8 | 58.4 | 47.8 | 42.3 | 42.3 |
| Year Lowest Occurred | 1972 | 1989 | 1991 | 1975 | 1998 | 1991 | 1987 | 1989 | 1986 | 1971 | 1994 | 1990 | 1990 |
| Mean Min. Temperature (F) | 38.8 | 41.1 | 42.9 | 44.4 | 48.2 | 52.0 | 55.1 | 54.8 | 53.3 | 48.6 | 42.4 | 38.1 | 46.6 |
| Highest Mean Min. Temperature (F) | 46.1 | 45.6 | 49.0 | 48.0 | 52.1 | 55.1 | 58.7 | 57.4 | 56.7 | 53.5 | 46.9 | 45.9 | 58.7 |
| Year Highest Occurred | 1995 | 1996 | 1978 | 1989 | 1992 | 1985 | 1984 | 1990 | 1998 | 1987 | 1981 | 1983 | 1984 |
| Lowest Mean Min. Temperature (F) | 33.5 | 36.6 | 38.4 | 40.9 | 45.0 | 47.9 | 51.3 | 52.0 | 49.9 | 42.7 | 37.7 | 30.9 | 30.9 |
| Year Lowest Occurred | 1972 | 1985 | 1985 | 1975 | 1974 | 1976 | 1989 | 1978 | 1986 | 1971 | 2000 | 1990 | 1990 |
| Mean Precipitation (in.) | 5.11 | 4.77 | 3.93 | 1.19 | 0.46 | 0.10 | 0.04 | 0.08 | 0.24 | 1.02 | 2.47 | 3.23 | 22.64 |
| Highest Precipitation (in.) | 15.60 | 16.89 | 12.52 | 6.45 | 2.66 | 0.77 | 0.83 | 0.72 | 1.18 | 3.20 | 7.52 | 7.32 | 16.89 |
| Year Highest Occurred | 1995 | 1998 | 1995 | 1983 | 1998 | 1995 | 1980 | 1975 | 1982 | 1972 | 1973 | 1971 | 1998 |
| Lowest Precipitation (in.) | 0.23 | 0.20 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 |
| Year Lowest Occurred | 1984 | 1997 | 1988 | 1973 | 1999 | 1996 | 2000 | 2000 | 2000 | 1995 | 1992 | 1989 | 1973 |
| Heating Degree Days (F) | 506. | 370. | 337. | 231. | 134. | 36. | 8. | 1. | 29. | 122. | 345. | 522. | 2641. |
| Cooling Degree Days (F) | 0. | 0. | 1. | 8. | 42. | 93. | 170. | 150. | 117. | 32. | 0. | 0. | 613. |