| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 41.4 | 47.9 | 57.1 | 65.1 | 73.6 | 80.3 | 88.0 | 87.9 | 80.6 | 66.7 | 50.0 | 41.6 | 65.0 |
| Highest Mean Max. Temperature (F) | 50.1 | 54.4 | 63.2 | 72.8 | 79.2 | 86.9 | 96.8 | 93.5 | 86.8 | 75.2 | 55.4 | 47.2 | 96.8 |
| Year Highest Occurred | 1999 | 1991 | 1992 | 1977 | 1992 | 1977 | 1985 | 1981 | 1994 | 1988 | 1990 | 1974 | 1985 |
| Lowest Mean Max. Temperature (F) | 25.1 | 38.9 | 51.5 | 58.6 | 67.8 | 73.8 | 78.4 | 82.7 | 72.2 | 61.9 | 38.1 | 27.3 | 25.1 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1991 | 1991 | 1993 | 1989 | 1985 | 1984 | 1985 | 1985 | 1979 |
| Mean Temperature (F) | 35.5 | 40.1 | 47.1 | 53.8 | 61.6 | 68.1 | 74.7 | 74.4 | 66.3 | 54.6 | 42.7 | 36.0 | 54.6 |
| Highest Mean Temperature (F) | 42.7 | 45.2 | 51.4 | 58.5 | 65.4 | 73.6 | 82.1 | 79.9 | 71.0 | 61.2 | 47.1 | 40.9 | 82.1 |
| Year Highest Occurred | 1999 | 1991 | 1992 | 1977 | 1993 | 1977 | 1985 | 1977 | 1994 | 1988 | 1998 | 1999 | 1985 |
| Lowest Mean Temperature (F) | 18.7 | 30.9 | 42.6 | 48.0 | 57.2 | 64.0 | 68.7 | 70.7 | 60.3 | 51.3 | 31.0 | 23.9 | 18.7 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1974 | 1991 | 1993 | 1995 | 1985 | 1981 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 29.6 | 32.3 | 37.0 | 42.5 | 49.6 | 55.9 | 61.4 | 60.8 | 52.0 | 42.4 | 35.3 | 30.3 | 44.1 |
| Highest Mean Min. Temperature (F) | 36.5 | 39.3 | 41.6 | 46.8 | 52.9 | 60.4 | 67.4 | 66.2 | 55.9 | 47.3 | 40.4 | 35.6 | 67.4 |
| Year Highest Occurred | 1981 | 1992 | 1983 | 1994 | 1993 | 1977 | 1985 | 1977 | 1990 | 1988 | 1983 | 1999 | 1985 |
| Lowest Mean Min. Temperature (F) | 12.4 | 23.0 | 33.6 | 36.9 | 45.7 | 53.0 | 58.5 | 57.1 | 48.4 | 38.3 | 24.0 | 19.8 | 12.4 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1972 | 1984 | 1976 | 1981 | 1995 | 1985 | 1972 | 1985 | 1972 | 1979 |
| Mean Precipitation (in.) | 2.64 | 1.86 | 1.15 | 0.74 | 0.56 | 0.43 | 0.17 | 0.32 | 0.52 | 1.00 | 2.20 | 2.69 | 14.28 |
| Highest Precipitation (in.) | 5.29 | 4.44 | 3.05 | 1.89 | 2.30 | 1.39 | 1.26 | 1.44 | 1.68 | 4.04 | 5.48 | 7.22 | 7.22 |
| Year Highest Occurred | 1995 | 1996 | 1983 | 1990 | 1998 | 1981 | 1995 | 1983 | 1985 | 1994 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.17 | 0.19 | 0.16 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.36 | 0.37 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1973 | 1977 | 1992 | 1978 | 2000 | 1998 | 1999 | 1988 | 1976 | 1976 | 1977 |
| Heating Degree Days (F) | 916. | 697. | 557. | 341. | 142. | 41. | 10. | 4. | 75. | 326. | 671. | 901. | 4681. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 4. | 36. | 134. | 310. | 295. | 113. | 3. | 0. | 0. | 895. |