| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 32.8 | 39.3 | 48.6 | 57.5 | 66.2 | 73.9 | 82.5 | 82.6 | 72.5 | 58.5 | 41.1 | 32.8 | 57.4 |
| Highest Mean Max. Temperature (F) | 40.9 | 47.3 | 57.5 | 65.0 | 74.2 | 81.7 | 91.3 | 88.9 | 81.4 | 65.8 | 48.2 | 40.9 | 91.3 |
| Year Highest Occurred | 1983 | 1991 | 1992 | 1977 | 1992 | 1992 | 1985 | 1971 | 1990 | 1988 | 1999 | 1979 | 1985 |
| Lowest Mean Max. Temperature (F) | 18.3 | 29.5 | 41.0 | 51.3 | 59.9 | 68.0 | 71.3 | 76.4 | 63.6 | 53.0 | 27.2 | 22.7 | 18.3 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1975 | 1996 | 1971 | 1993 | 1975 | 1985 | 1995 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 27.3 | 32.5 | 39.5 | 46.5 | 54.4 | 61.6 | 68.6 | 68.6 | 59.2 | 47.2 | 34.9 | 27.2 | 47.3 |
| Highest Mean Temperature (F) | 35.8 | 39.2 | 45.5 | 51.7 | 59.8 | 68.0 | 75.3 | 73.9 | 65.3 | 53.3 | 41.4 | 35.2 | 75.3 |
| Year Highest Occurred | 1983 | 1991 | 1992 | 1980 | 1993 | 1992 | 1998 | 1971 | 1990 | 1988 | 1999 | 1979 | 1998 |
| Lowest Mean Temperature (F) | 10.5 | 21.8 | 34.0 | 41.7 | 49.6 | 56.6 | 60.2 | 63.9 | 53.3 | 43.4 | 21.7 | 16.2 | 10.5 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1975 | 1996 | 1991 | 1993 | 1995 | 1985 | 1984 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 21.7 | 25.7 | 30.4 | 35.5 | 42.6 | 49.2 | 54.6 | 54.5 | 45.9 | 35.8 | 28.7 | 21.6 | 37.2 |
| Highest Mean Min. Temperature (F) | 30.7 | 32.5 | 35.1 | 40.4 | 47.6 | 54.2 | 60.9 | 58.9 | 50.3 | 40.7 | 34.6 | 29.5 | 60.9 |
| Year Highest Occurred | 1983 | 1992 | 1983 | 1980 | 1993 | 1992 | 1998 | 1971 | 1998 | 1988 | 1999 | 1979 | 1998 |
| Lowest Mean Min. Temperature (F) | 2.7 | 14.0 | 25.8 | 31.0 | 37.8 | 45.0 | 49.0 | 50.1 | 43.0 | 32.2 | 16.2 | 9.7 | 2.7 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1972 | 1999 | 1991 | 1993 | 1995 | 1985 | 1984 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 1.82 | 1.51 | 1.53 | 1.28 | 1.60 | 1.18 | 0.76 | 0.68 | 0.76 | 1.06 | 2.24 | 2.25 | 16.67 |
| Highest Precipitation (in.) | 3.79 | 3.27 | 3.81 | 2.62 | 3.11 | 2.84 | 2.33 | 1.83 | 1.87 | 3.27 | 5.10 | 4.93 | 5.10 |
| Year Highest Occurred | 1974 | 1999 | 1995 | 1978 | 1990 | 1983 | 1990 | 1976 | 1995 | 1996 | 1973 | 1987 | 1973 |
| Lowest Precipitation (in.) | 0.38 | 0.35 | 0.43 | 0.13 | 0.20 | 0.23 | 0.00 | 0.00 | 0.00 | 0.03 | 0.22 | 0.60 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1992 | 1977 | 1982 | 1974 | 1994 | 2000 | 1999 | 1987 | 1976 | 1976 | 1994 |
| Heating Degree Days (F) | 1169. | 916. | 790. | 557. | 338. | 149. | 44. | 42. | 196. | 554. | 897. | 1168. | 6820. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 11. | 46. | 155. | 154. | 26. | 1. | 0. | 0. | 394. |