| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 46.5 | 51.5 | 57.4 | 63.0 | 69.7 | 75.1 | 81.5 | 82.2 | 77.3 | 65.2 | 52.4 | 46.1 | 64.0 |
| Highest Mean Max. Temperature (F) | 52.2 | 58.0 | 65.0 | 68.6 | 79.5 | 80.9 | 89.2 | 88.6 | 85.3 | 73.2 | 58.2 | 50.1 | 89.2 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 2000 | 1992 | 1992 | 1996 | 1998 | 1999 | 1987 | 1997 | 1999 | 1996 |
| Lowest Mean Max. Temperature (F) | 37.5 | 44.1 | 51.4 | 57.3 | 63.3 | 67.8 | 73.5 | 74.4 | 70.0 | 59.3 | 42.6 | 39.7 | 37.5 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1980 | 1993 | 1976 | 1977 | 1984 | 1985 | 1990 | 1979 |
| Mean Temperature (F) | 40.0 | 43.5 | 47.9 | 52.1 | 57.9 | 63.2 | 68.3 | 68.9 | 64.5 | 54.7 | 45.5 | 40.1 | 53.9 |
| Highest Mean Temperature (F) | 44.1 | 48.5 | 53.4 | 56.0 | 64.4 | 67.7 | 73.6 | 72.2 | 68.8 | 59.6 | 50.0 | 44.4 | 73.6 |
| Year Highest Occurred | 1994 | 1992 | 1992 | 1992 | 1992 | 1992 | 1996 | 1997 | 1995 | 1987 | 1995 | 1979 | 1996 |
| Lowest Mean Temperature (F) | 31.6 | 36.1 | 43.0 | 46.8 | 53.7 | 58.3 | 63.9 | 64.4 | 60.1 | 51.6 | 36.6 | 33.8 | 31.6 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1980 | 1993 | 1980 | 1983 | 1984 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 33.5 | 35.4 | 38.4 | 41.1 | 46.1 | 51.3 | 55.1 | 55.6 | 51.7 | 44.2 | 38.5 | 34.1 | 43.8 |
| Highest Mean Min. Temperature (F) | 38.3 | 39.3 | 43.6 | 45.8 | 51.3 | 54.4 | 58.4 | 58.9 | 56.6 | 51.5 | 42.6 | 38.7 | 58.9 |
| Year Highest Occurred | 1994 | 1992 | 1986 | 1992 | 1993 | 1992 | 1990 | 1990 | 1990 | 1988 | 1983 | 1979 | 1990 |
| Lowest Mean Min. Temperature (F) | 25.6 | 28.1 | 34.3 | 36.3 | 40.0 | 48.2 | 52.4 | 51.8 | 48.1 | 40.6 | 30.6 | 26.7 | 25.6 |
| Year Lowest Occurred | 1979 | 1989 | 2000 | 1975 | 1999 | 1976 | 1977 | 1980 | 1983 | 1974 | 1985 | 1985 | 1979 |
| Mean Precipitation (in.) | 6.13 | 5.32 | 4.72 | 3.58 | 2.80 | 2.01 | 0.85 | 1.12 | 1.97 | 3.39 | 6.73 | 7.08 | 45.70 |
| Highest Precipitation (in.) | 10.80 | 10.87 | 10.28 | 7.83 | 5.26 | 4.01 | 3.65 | 3.84 | 4.59 | 7.76 | 13.29 | 13.73 | 13.73 |
| Year Highest Occurred | 1990 | 1999 | 1983 | 1993 | 1998 | 1984 | 1983 | 1976 | 1977 | 1990 | 1998 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.41 | 0.66 | 1.90 | 1.11 | 0.04 | 0.18 | 0.05 | 0.01 | 0.03 | 0.25 | 0.81 | 1.96 | 0.01 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1977 | 1992 | 1987 | 1994 | 1981 | 1993 | 1987 | 1976 | 1976 | 1981 |
| Heating Degree Days (F) | 775. | 603. | 530. | 388. | 239. | 104. | 42. | 30. | 100. | 322. | 586. | 772. | 4491. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 18. | 50. | 143. | 152. | 84. | 3. | 0. | 0. | 450. |