| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 46.5 | 50.2 | 54.2 | 59.3 | 65.4 | 69.9 | 75.6 | 76.6 | 71.5 | 61.4 | 51.0 | 45.6 | 60.6 |
| Highest Mean Max. Temperature (F) | 54.8 | 57.0 | 60.7 | 63.5 | 70.5 | 75.7 | 83.2 | 82.0 | 78.2 | 67.3 | 57.7 | 49.8 | 83.2 |
| Year Highest Occurred | 1981 | 1977 | 1992 | 1980 | 1993 | 1982 | 1985 | 1971 | 1974 | 1987 | 1997 | 1976 | 1985 |
| Lowest Mean Max. Temperature (F) | 40.9 | 41.9 | 47.7 | 53.9 | 59.9 | 64.8 | 68.8 | 69.7 | 66.2 | 57.5 | 40.6 | 39.1 | 39.1 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1996 | 1991 | 1993 | 1976 | 1972 | 1981 | 1985 | 1990 | 1990 |
| Mean Temperature (F) | 39.9 | 42.5 | 45.3 | 49.4 | 55.0 | 59.4 | 63.7 | 64.0 | 59.3 | 51.2 | 44.1 | 39.6 | 51.1 |
| Highest Mean Temperature (F) | 47.0 | 47.7 | 49.1 | 53.4 | 59.9 | 63.7 | 67.3 | 66.8 | 62.7 | 54.3 | 49.5 | 43.6 | 67.3 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1992 | 1993 | 1982 | 1998 | 1981 | 1974 | 1988 | 1997 | 1979 | 1998 |
| Lowest Mean Temperature (F) | 33.8 | 33.7 | 40.2 | 43.8 | 50.8 | 56.6 | 60.5 | 60.1 | 54.9 | 47.8 | 33.4 | 33.1 | 33.1 |
| Year Lowest Occurred | 1980 | 1989 | 1971 | 1975 | 1974 | 1991 | 1986 | 1973 | 1972 | 1972 | 1985 | 1990 | 1990 |
| Mean Min. Temperature (F) | 33.3 | 34.7 | 36.4 | 39.5 | 44.6 | 48.9 | 51.7 | 51.4 | 47.0 | 40.9 | 37.2 | 33.6 | 41.6 |
| Highest Mean Min. Temperature (F) | 39.1 | 40.1 | 39.8 | 43.6 | 49.2 | 51.9 | 56.2 | 54.4 | 51.2 | 45.6 | 42.0 | 37.7 | 56.2 |
| Year Highest Occurred | 1981 | 1998 | 1987 | 1996 | 1993 | 1983 | 1998 | 1997 | 1997 | 1988 | 1987 | 1979 | 1998 |
| Lowest Mean Min. Temperature (F) | 26.5 | 25.4 | 30.8 | 33.7 | 41.6 | 45.6 | 48.3 | 47.8 | 43.7 | 35.5 | 26.2 | 25.4 | 25.4 |
| Year Lowest Occurred | 1980 | 1989 | 1982 | 1975 | 1974 | 1976 | 1984 | 1973 | 1972 | 1972 | 1985 | 1985 | 1989 |
| Mean Precipitation (in.) | 8.58 | 5.85 | 6.20 | 5.48 | 4.81 | 3.73 | 2.12 | 2.09 | 3.36 | 5.59 | 9.23 | 8.48 | 65.52 |
| Highest Precipitation (in.) | 18.22 | 10.81 | 11.05 | 10.82 | 8.37 | 7.61 | 5.67 | 6.16 | 7.03 | 13.36 | 15.18 | 13.56 | 18.22 |
| Year Highest Occurred | 1971 | 1996 | 1997 | 1981 | 1996 | 1993 | 1993 | 1977 | 1972 | 1996 | 1986 | 1996 | 1971 |
| Lowest Precipitation (in.) | 0.99 | 0.89 | 2.01 | 2.48 | 2.57 | 0.75 | 0.05 | 0.14 | 0.43 | 0.19 | 2.00 | 1.16 | 0.05 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1998 | 1982 | 1987 | 1984 | 1998 | 1975 | 1987 | 1979 | 1985 | 1984 |
| Heating Degree Days (F) | 779. | 631. | 611. | 468. | 313. | 176. | 79. | 82. | 186. | 429. | 626. | 787. | 5167. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 2. | 8. | 37. | 51. | 13. | 0. | 0. | 0. | 111. |