| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 34.4 | 41.7 | 51.0 | 59.2 | 67.0 | 75.2 | 84.5 | 84.9 | 75.5 | 62.7 | 44.9 | 35.3 | 59.7 |
| Highest Mean Max. Temperature (F) | 40.3 | 50.9 | 60.1 | 68.4 | 75.9 | 82.5 | 91.5 | 90.1 | 84.7 | 74.1 | 53.4 | 42.9 | 91.5 |
| Year Highest Occurred | 1994 | 1992 | 1992 | 1987 | 1992 | 1974 | 1985 | 1981 | 1990 | 1988 | 1999 | 1989 | 1985 |
| Lowest Mean Max. Temperature (F) | 20.2 | 27.3 | 43.7 | 50.3 | 61.3 | 69.6 | 72.7 | 76.1 | 65.5 | 56.0 | 32.6 | 26.6 | 20.2 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1975 | 1977 | 1980 | 1993 | 1976 | 1986 | 1984 | 1985 | 1978 | 1979 |
| Mean Temperature (F) | 25.7 | 31.9 | 39.1 | 45.3 | 52.7 | 59.8 | 66.5 | 66.2 | 57.3 | 46.5 | 34.7 | 26.4 | 46.0 |
| Highest Mean Temperature (F) | 33.5 | 39.7 | 44.9 | 50.6 | 57.3 | 64.6 | 72.0 | 69.9 | 63.6 | 53.6 | 41.9 | 33.7 | 72.0 |
| Year Highest Occurred | 1981 | 1992 | 1986 | 1987 | 1993 | 1974 | 1985 | 1971 | 1990 | 1988 | 1999 | 1973 | 1985 |
| Lowest Mean Temperature (F) | 10.0 | 15.3 | 33.7 | 40.1 | 48.8 | 55.3 | 57.8 | 62.2 | 51.1 | 42.8 | 23.3 | 15.0 | 10.0 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1975 | 1977 | 1991 | 1993 | 1976 | 1971 | 1995 | 1985 | 1978 | 1979 |
| Mean Min. Temperature (F) | 17.0 | 22.1 | 27.1 | 31.3 | 38.3 | 44.3 | 48.4 | 47.4 | 39.0 | 30.3 | 24.4 | 17.4 | 32.3 |
| Highest Mean Min. Temperature (F) | 27.5 | 30.4 | 33.1 | 33.9 | 42.5 | 48.1 | 54.5 | 51.8 | 44.5 | 34.2 | 30.3 | 26.6 | 54.5 |
| Year Highest Occurred | 1981 | 1983 | 1983 | 1994 | 1993 | 1982 | 1975 | 1983 | 1998 | 1979 | 1999 | 1973 | 1975 |
| Lowest Mean Min. Temperature (F) | -0.2 | 3.2 | 23.3 | 28.1 | 33.4 | 40.8 | 42.8 | 42.7 | 34.9 | 25.6 | 14.0 | 3.3 | -0.2 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1999 | 1999 | 1976 | 1993 | 1987 | 1971 | 1987 | 1985 | 1978 | 1979 |
| Mean Precipitation (in.) | 0.91 | 0.63 | 0.83 | 0.86 | 1.35 | 1.24 | 0.69 | 0.87 | 0.73 | 0.57 | 0.97 | 0.95 | 10.60 |
| Highest Precipitation (in.) | 2.59 | 1.66 | 1.81 | 3.58 | 4.20 | 3.16 | 2.33 | 3.52 | 2.72 | 1.70 | 2.03 | 2.60 | 4.20 |
| Year Highest Occurred | 1971 | 1986 | 1983 | 1978 | 1998 | 1992 | 1982 | 1984 | 1980 | 1982 | 1981 | 1983 | 1998 |
| Lowest Precipitation (in.) | 0.19 | 0.10 | 0.21 | 0.03 | 0.25 | 0.21 | 0.00 | 0.01 | 0.00 | 0.00 | 0.23 | 0.05 | 0.00 |
| Year Lowest Occurred | 1992 | 1997 | 1988 | 1977 | 1982 | 1994 | 1979 | 1991 | 1999 | 1987 | 1976 | 1976 | 1979 |
| Heating Degree Days (F) | 1219. | 927. | 805. | 593. | 384. | 184. | 71. | 65. | 258. | 573. | 909. | 1198. | 7186. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 26. | 116. | 100. | 24. | 0. | 0. | 0. | 267. |