| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 50.3 | 52.6 | 58.9 | 67.7 | 74.6 | 83.1 | 87.3 | 85.8 | 80.9 | 71.6 | 63.1 | 54.5 | 69.2 |
| Highest Mean Max. Temperature (F) | 60.0 | 63.4 | 65.2 | 73.1 | 81.5 | 89.2 | 91.7 | 89.4 | 85.2 | 76.0 | 68.8 | 60.2 | 91.7 |
| Year Highest Occurred | 1974 | 1990 | 2000 | 1981 | 1991 | 1989 | 1993 | 1977 | 1977 | 1990 | 1985 | 1990 | 1993 |
| Lowest Mean Max. Temperature (F) | 41.8 | 41.6 | 52.3 | 61.0 | 69.1 | 77.4 | 82.4 | 82.4 | 78.2 | 67.5 | 56.3 | 42.6 | 41.6 |
| Year Lowest Occurred | 1977 | 1978 | 1984 | 1982 | 1972 | 1972 | 2000 | 1976 | 1982 | 1974 | 1996 | 1989 | 1978 |
| Mean Temperature (F) | 41.1 | 42.9 | 48.9 | 57.4 | 65.4 | 74.2 | 78.8 | 77.5 | 73.0 | 62.8 | 53.6 | 45.5 | 60.1 |
| Highest Mean Temperature (F) | 49.8 | 52.1 | 53.4 | 62.2 | 71.0 | 79.3 | 82.5 | 79.7 | 75.4 | 67.3 | 61.8 | 51.3 | 82.5 |
| Year Highest Occurred | 1974 | 1990 | 1976 | 1994 | 1991 | 1989 | 1993 | 1987 | 1980 | 1990 | 1985 | 1971 | 1993 |
| Lowest Mean Temperature (F) | 30.8 | 32.3 | 43.6 | 51.8 | 61.3 | 69.1 | 74.7 | 73.7 | 69.8 | 57.9 | 44.3 | 34.9 | 30.8 |
| Year Lowest Occurred | 1977 | 1978 | 1978 | 1975 | 1978 | 1972 | 1978 | 1976 | 1982 | 1987 | 1976 | 1989 | 1977 |
| Mean Min. Temperature (F) | 31.9 | 33.2 | 38.9 | 47.0 | 56.1 | 65.3 | 70.2 | 69.2 | 65.0 | 54.0 | 44.1 | 36.5 | 51.0 |
| Highest Mean Min. Temperature (F) | 39.6 | 40.7 | 42.8 | 51.4 | 60.5 | 69.3 | 73.6 | 71.7 | 67.5 | 61.4 | 54.8 | 42.9 | 73.6 |
| Year Highest Occurred | 1974 | 1990 | 1991 | 1998 | 1991 | 1989 | 1999 | 1999 | 1989 | 1971 | 1985 | 1998 | 1999 |
| Lowest Mean Min. Temperature (F) | 19.8 | 23.1 | 32.9 | 42.5 | 52.3 | 60.8 | 65.6 | 65.0 | 61.2 | 47.9 | 31.8 | 27.1 | 19.8 |
| Year Lowest Occurred | 1977 | 1978 | 1978 | 1975 | 1978 | 1972 | 1978 | 1976 | 1976 | 1987 | 1976 | 1989 | 1977 |
| Mean Precipitation (in.) | 4.25 | 3.42 | 4.00 | 2.81 | 3.95 | 3.51 | 4.51 | 5.39 | 4.49 | 3.56 | 3.02 | 3.06 | 45.97 |
| Highest Precipitation (in.) | 11.70 | 8.89 | 8.41 | 6.07 | 9.31 | 8.00 | 11.97 | 12.81 | 11.54 | 9.32 | 6.22 | 5.81 | 12.81 |
| Year Highest Occurred | 1987 | 1998 | 1989 | 2000 | 1978 | 2000 | 1996 | 1992 | 1999 | 1971 | 1977 | 1973 | 1992 |
| Lowest Precipitation (in.) | 1.37 | 1.25 | 0.94 | 0.63 | 0.51 | 0.48 | 0.60 | 0.74 | 0.38 | 0.00 | 1.01 | 0.57 | 0.00 |
| Year Lowest Occurred | 1981 | 1986 | 1986 | 1994 | 1986 | 1984 | 1987 | 1993 | 1986 | 2000 | 1973 | 1988 | 2000 |
| Heating Degree Days (F) | 741. | 618. | 500. | 243. | 70. | 3. | 0. | 0. | 3. | 134. | 353. | 606. | 3271. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 12. | 81. | 280. | 426. | 387. | 242. | 67. | 11. | 0. | 1506. |