| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 57.9 | 62.6 | 65.3 | 69.8 | 73.9 | 79.3 | 82.7 | 82.8 | 82.2 | 77.1 | 65.9 | 58.1 | 71.5 |
| Highest Mean Max. Temperature (F) | 62.3 | 68.7 | 72.4 | 76.0 | 80.4 | 86.4 | 89.1 | 86.4 | 91.4 | 80.5 | 72.6 | 63.5 | 91.4 |
| Year Highest Occurred | 1991 | 1988 | 1988 | 1987 | 1984 | 1981 | 1984 | 1971 | 1984 | 1991 | 1995 | 1999 | 1984 |
| Lowest Mean Max. Temperature (F) | 54.0 | 58.6 | 59.9 | 63.0 | 65.4 | 72.4 | 77.3 | 79.3 | 77.2 | 71.6 | 60.1 | 51.7 | 51.7 |
| Year Lowest Occurred | 1972 | 1998 | 1999 | 1975 | 1998 | 1998 | 2000 | 1999 | 1986 | 2000 | 1972 | 1972 | 1972 |
| Mean Temperature (F) | 48.4 | 51.9 | 53.9 | 57.0 | 60.4 | 64.8 | 67.3 | 67.5 | 66.9 | 62.3 | 54.1 | 47.9 | 58.5 |
| Highest Mean Temperature (F) | 53.0 | 56.1 | 58.4 | 61.3 | 65.1 | 70.5 | 71.8 | 70.3 | 71.4 | 65.8 | 59.0 | 52.0 | 71.8 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1990 | 1987 | 1981 | 1984 | 1983 | 1984 | 1983 | 1995 | 1981 | 1984 |
| Lowest Mean Temperature (F) | 43.7 | 47.2 | 50.3 | 51.2 | 55.6 | 61.9 | 64.5 | 64.0 | 63.6 | 58.9 | 49.0 | 43.3 | 43.3 |
| Year Lowest Occurred | 1972 | 1989 | 1977 | 1975 | 1998 | 1982 | 2000 | 1973 | 1986 | 1971 | 1994 | 1990 | 1990 |
| Mean Min. Temperature (F) | 38.9 | 41.2 | 42.5 | 44.2 | 46.9 | 50.2 | 51.8 | 52.1 | 51.5 | 47.5 | 42.2 | 37.7 | 45.6 |
| Highest Mean Min. Temperature (F) | 47.9 | 45.9 | 46.9 | 48.3 | 50.3 | 54.6 | 54.5 | 55.7 | 54.8 | 51.6 | 47.1 | 45.7 | 55.7 |
| Year Highest Occurred | 1995 | 1996 | 1978 | 1990 | 1987 | 1981 | 1984 | 1997 | 1983 | 1987 | 1997 | 1983 | 1997 |
| Lowest Mean Min. Temperature (F) | 32.8 | 35.4 | 37.7 | 39.4 | 43.8 | 46.9 | 49.4 | 48.7 | 49.2 | 41.6 | 37.3 | 30.7 | 30.7 |
| Year Lowest Occurred | 1976 | 1989 | 1977 | 1975 | 1974 | 1979 | 1977 | 1973 | 1993 | 1971 | 1993 | 1990 | 1990 |
| Mean Precipitation (in.) | 5.41 | 5.31 | 3.85 | 1.40 | 0.62 | 0.15 | 0.05 | 0.08 | 0.29 | 1.37 | 3.52 | 3.80 | 25.85 |
| Highest Precipitation (in.) | 16.31 | 19.59 | 15.04 | 4.59 | 3.74 | 1.12 | 0.95 | 1.04 | 1.77 | 4.64 | 9.70 | 10.82 | 19.59 |
| Year Highest Occurred | 1995 | 1998 | 1983 | 1983 | 1998 | 1992 | 1974 | 1997 | 1989 | 1975 | 1973 | 1996 | 1998 |
| Lowest Precipitation (in.) | 0.32 | 0.31 | 0.08 | 0.06 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.26 | 0.00 | 0.00 |
| Year Lowest Occurred | 1976 | 1971 | 1988 | 1977 | 1992 | 1996 | 2000 | 1999 | 1995 | 1995 | 1986 | 1989 | 1992 |
| Heating Degree Days (F) | 515. | 366. | 345. | 247. | 167. | 65. | 22. | 13. | 32. | 110. | 329. | 530. | 2741. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 8. | 23. | 56. | 93. | 88. | 88. | 27. | 2. | 0. | 385. |