| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 37.3 | 43.2 | 51.5 | 59.8 | 70.6 | 82.3 | 88.8 | 87.2 | 77.8 | 66.0 | 48.2 | 38.7 | 62.6 |
| Highest Mean Max. Temperature (F) | 45.7 | 50.6 | 58.2 | 67.9 | 77.9 | 88.6 | 93.4 | 91.4 | 84.6 | 72.7 | 58.3 | 47.8 | 93.4 |
| Year Highest Occurred | 1981 | 1977 | 1972 | 1992 | 1994 | 1988 | 1989 | 1971 | 1979 | 1988 | 1999 | 1980 | 1989 |
| Lowest Mean Max. Temperature (F) | 26.2 | 30.5 | 45.5 | 51.3 | 62.3 | 74.8 | 84.2 | 84.1 | 70.5 | 56.8 | 40.7 | 29.8 | 26.2 |
| Year Lowest Occurred | 1984 | 1989 | 1973 | 1983 | 1995 | 1983 | 1993 | 1993 | 1986 | 1984 | 2000 | 1983 | 1984 |
| Mean Temperature (F) | 21.6 | 27.4 | 36.3 | 43.5 | 53.2 | 62.0 | 67.9 | 66.1 | 57.0 | 46.2 | 32.3 | 23.2 | 44.7 |
| Highest Mean Temperature (F) | 29.4 | 34.8 | 42.0 | 49.1 | 58.3 | 68.0 | 72.1 | 69.3 | 63.4 | 50.2 | 38.2 | 31.8 | 72.1 |
| Year Highest Occurred | 1994 | 2000 | 1986 | 2000 | 2000 | 1988 | 1989 | 2000 | 1990 | 1988 | 1999 | 1980 | 1989 |
| Lowest Mean Temperature (F) | 7.9 | 15.1 | 31.9 | 36.5 | 47.4 | 56.8 | 61.0 | 61.8 | 51.2 | 42.1 | 25.2 | 14.5 | 7.9 |
| Year Lowest Occurred | 1984 | 1989 | 1971 | 1997 | 1995 | 1975 | 1993 | 1993 | 1971 | 1995 | 1979 | 1990 | 1984 |
| Mean Min. Temperature (F) | 5.9 | 11.5 | 21.1 | 27.2 | 35.7 | 41.6 | 46.9 | 44.9 | 36.1 | 26.4 | 16.4 | 7.7 | 26.8 |
| Highest Mean Min. Temperature (F) | 18.3 | 20.5 | 26.3 | 32.0 | 40.2 | 47.3 | 52.8 | 50.7 | 44.2 | 33.0 | 22.3 | 18.3 | 52.8 |
| Year Highest Occurred | 1978 | 1986 | 1986 | 1990 | 1981 | 1988 | 1985 | 1983 | 1981 | 1972 | 1986 | 1977 | 1985 |
| Lowest Mean Min. Temperature (F) | -10.5 | -0.4 | 12.2 | 19.6 | 30.7 | 37.0 | 37.8 | 35.8 | 28.7 | 19.1 | 8.5 | -3.1 | -10.5 |
| Year Lowest Occurred | 1984 | 1989 | 1997 | 1997 | 1996 | 1996 | 1993 | 1996 | 1996 | 1995 | 1979 | 1990 | 1984 |
| Mean Precipitation (in.) | 0.39 | 0.45 | 0.74 | 0.81 | 1.16 | 0.69 | 0.68 | 0.66 | 1.00 | 1.16 | 0.56 | 0.37 | 8.67 |
| Highest Precipitation (in.) | 1.55 | 1.82 | 1.77 | 1.94 | 3.37 | 2.55 | 2.13 | 1.63 | 2.84 | 3.47 | 1.58 | 1.20 | 3.47 |
| Year Highest Occurred | 1980 | 1980 | 1987 | 1986 | 1995 | 1998 | 1977 | 1979 | 1982 | 1994 | 1983 | 1971 | 1994 |
| Lowest Precipitation (in.) | 0.06 | 0.00 | 0.05 | 0.01 | 0.07 | 0.00 | 0.01 | 0.00 | 0.02 | 0.01 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1979 | 1991 | 1977 | 1987 | 1974 | 1980 | 1994 | 1985 | 1979 | 1988 | 1976 | 1976 | 1991 |
| Heating Degree Days (F) | 1345. | 1054. | 891. | 646. | 370. | 143. | 41. | 53. | 257. | 583. | 980. | 1296. | 7659. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 2. | 53. | 130. | 84. | 15. | 0. | 0. | 0. | 284. |