| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 26.1 | 32.9 | 45.0 | 60.1 | 72.7 | 80.9 | 85.1 | 82.3 | 73.4 | 61.8 | 43.1 | 30.0 | 57.8 |
| Highest Mean Max. Temperature (F) | 39.4 | 44.5 | 54.5 | 70.9 | 81.5 | 91.3 | 93.2 | 88.5 | 79.8 | 69.3 | 54.6 | 38.9 | 93.2 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1977 | 1988 | 1988 | 1983 | 1998 | 1973 | 1999 | 1998 | 1988 |
| Lowest Mean Max. Temperature (F) | 12.1 | 23.9 | 36.2 | 51.3 | 65.7 | 75.8 | 76.4 | 77.7 | 65.7 | 55.4 | 35.3 | 18.6 | 12.1 |
| Year Lowest Occurred | 1977 | 1978 | 1975 | 1972 | 1973 | 1974 | 1992 | 1992 | 1993 | 1980 | 1996 | 1983 | 1977 |
| Mean Temperature (F) | 14.0 | 20.6 | 33.0 | 46.5 | 58.3 | 67.2 | 71.7 | 69.5 | 60.2 | 48.8 | 33.5 | 20.0 | 45.3 |
| Highest Mean Temperature (F) | 27.2 | 32.7 | 40.7 | 54.5 | 66.1 | 72.7 | 76.9 | 74.6 | 65.5 | 58.6 | 41.1 | 28.6 | 76.9 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1977 | 1977 | 1971 | 1983 | 1984 | 1978 | 1971 | 1999 | 1982 | 1983 |
| Lowest Mean Temperature (F) | -0.6 | 6.9 | 23.9 | 40.2 | 52.1 | 62.8 | 64.9 | 64.4 | 54.7 | 43.9 | 25.3 | 6.5 | -0.6 |
| Year Lowest Occurred | 1977 | 1978 | 1975 | 1972 | 1997 | 1982 | 1992 | 1992 | 1993 | 1976 | 1976 | 1985 | 1977 |
| Mean Min. Temperature (F) | 1.8 | 8.2 | 21.0 | 32.8 | 43.8 | 53.4 | 58.2 | 56.7 | 47.0 | 35.7 | 23.8 | 10.0 | 32.7 |
| Highest Mean Min. Temperature (F) | 15.0 | 23.7 | 30.2 | 38.1 | 51.2 | 62.1 | 63.9 | 62.1 | 55.1 | 48.0 | 29.1 | 20.0 | 63.9 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1982 | 1971 | 1974 | 1995 | 1971 | 1971 | 1983 | 1982 | 1974 |
| Lowest Mean Min. Temperature (F) | -13.3 | -10.2 | 11.6 | 28.6 | 37.7 | 45.5 | 53.4 | 51.2 | 42.5 | 30.0 | 13.0 | -6.5 | -13.3 |
| Year Lowest Occurred | 1977 | 1978 | 1975 | 1983 | 1997 | 1985 | 1992 | 1992 | 1989 | 1987 | 1976 | 1985 | 1977 |
| Mean Precipitation (in.) | 1.03 | 0.92 | 2.10 | 3.48 | 3.87 | 3.81 | 4.62 | 4.21 | 3.63 | 2.13 | 2.47 | 1.37 | 33.64 |
| Highest Precipitation (in.) | 2.33 | 3.00 | 4.28 | 8.07 | 6.79 | 7.51 | 11.59 | 10.10 | 10.71 | 5.83 | 7.96 | 3.62 | 11.59 |
| Year Highest Occurred | 1996 | 1981 | 1998 | 1993 | 1973 | 1998 | 1978 | 1980 | 1980 | 1979 | 1991 | 1982 | 1978 |
| Lowest Precipitation (in.) | 0.05 | 0.00 | 0.19 | 1.06 | 1.22 | 0.68 | 0.67 | 0.62 | 0.17 | 0.30 | 0.10 | 0.25 | 0.00 |
| Year Lowest Occurred | 1981 | 1987 | 1978 | 1971 | 1985 | 1989 | 1985 | 1971 | 1979 | 1975 | 1976 | 1989 | 1987 |
| Heating Degree Days (F) | 1584. | 1244. | 993. | 559. | 257. | 55. | 20. | 32. | 177. | 507. | 946. | 1395. | 7769. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 47. | 118. | 227. | 172. | 32. | 2. | 0. | 0. | 600. |