| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 44.3 | 45.9 | 48.7 | 55.3 | 64.1 | 74.1 | 81.2 | 80.8 | 74.0 | 63.7 | 50.5 | 44.7 | 60.6 |
| Highest Mean Max. Temperature (F) | 50.8 | 55.3 | 58.9 | 64.9 | 72.1 | 81.6 | 86.3 | 86.8 | 83.5 | 72.6 | 61.2 | 52.7 | 86.8 |
| Year Highest Occurred | 1986 | 1991 | 1972 | 1977 | 1976 | 1981 | 1981 | 1981 | 1974 | 1978 | 1976 | 1989 | 1981 |
| Lowest Mean Max. Temperature (F) | 38.8 | 36.6 | 39.6 | 46.3 | 49.6 | 64.3 | 75.1 | 74.2 | 63.1 | 55.9 | 39.5 | 36.8 | 36.6 |
| Year Lowest Occurred | 1982 | 1998 | 1991 | 1975 | 1998 | 1998 | 1992 | 1976 | 1986 | 1984 | 1994 | 1971 | 1998 |
| Mean Temperature (F) | 36.2 | 37.2 | 39.4 | 44.3 | 51.8 | 60.4 | 66.7 | 66.3 | 60.7 | 52.0 | 41.3 | 36.5 | 49.4 |
| Highest Mean Temperature (F) | 42.3 | 44.6 | 45.3 | 50.3 | 58.4 | 65.9 | 70.4 | 69.7 | 65.9 | 58.4 | 48.7 | 41.8 | 70.4 |
| Year Highest Occurred | 1986 | 1991 | 1972 | 1987 | 1992 | 1977 | 1984 | 1981 | 1974 | 1988 | 1995 | 1989 | 1984 |
| Lowest Mean Temperature (F) | 31.4 | 32.0 | 32.9 | 36.0 | 42.2 | 54.9 | 61.8 | 60.2 | 52.2 | 45.9 | 32.6 | 28.4 | 28.4 |
| Year Lowest Occurred | 1979 | 1990 | 1991 | 1975 | 1998 | 1998 | 1987 | 1976 | 1986 | 1984 | 1994 | 1971 | 1971 |
| Mean Min. Temperature (F) | 28.0 | 28.5 | 30.1 | 33.3 | 39.5 | 46.6 | 52.1 | 51.7 | 47.3 | 40.2 | 32.1 | 28.2 | 38.1 |
| Highest Mean Min. Temperature (F) | 33.8 | 33.9 | 35.2 | 38.7 | 46.4 | 51.2 | 56.1 | 55.5 | 52.1 | 46.7 | 38.1 | 32.3 | 56.1 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1992 | 1992 | 1977 | 1988 | 1992 | 1991 | 1991 | 1995 | 1977 | 1988 |
| Lowest Mean Min. Temperature (F) | 23.5 | 22.9 | 25.4 | 25.6 | 33.3 | 41.8 | 46.6 | 46.1 | 41.2 | 33.6 | 25.6 | 19.9 | 19.9 |
| Year Lowest Occurred | 1973 | 1990 | 1977 | 1975 | 1977 | 1980 | 1983 | 1976 | 1986 | 1971 | 1994 | 1971 | 1971 |
| Mean Precipitation (in.) | 10.77 | 9.94 | 9.02 | 4.14 | 2.18 | 0.74 | 0.28 | 0.22 | 1.07 | 3.14 | 6.47 | 7.45 | 55.42 |
| Highest Precipitation (in.) | 28.09 | 36.32 | 25.31 | 12.08 | 8.45 | 3.51 | 3.51 | 3.58 | 5.12 | 10.90 | 23.98 | 23.56 | 36.32 |
| Year Highest Occurred | 1997 | 1986 | 1995 | 1978 | 1995 | 1993 | 1974 | 1976 | 1978 | 1982 | 1983 | 1996 | 1986 |
| Lowest Precipitation (in.) | 0.47 | 0.69 | 0.55 | 0.49 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.43 | 0.00 | 0.00 |
| Year Lowest Occurred | 1976 | 1988 | 1997 | 1977 | 1985 | 1994 | 2000 | 1998 | 1995 | 1995 | 1995 | 1989 | 1985 |
| Heating Degree Days (F) | 893. | 780. | 779. | 622. | 423. | 176. | 55. | 53. | 178. | 417. | 711. | 885. | 5972. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 14. | 37. | 105. | 93. | 47. | 12. | 0. | 0. | 308. |