| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 39.4 | 44.6 | 50.3 | 58.3 | 66.3 | 75.3 | 83.7 | 84.0 | 76.0 | 64.7 | 46.7 | 39.4 | 60.7 |
| Highest Mean Max. Temperature (F) | 45.0 | 53.6 | 58.7 | 69.1 | 77.6 | 83.3 | 88.2 | 90.1 | 82.0 | 74.7 | 56.3 | 47.9 | 90.1 |
| Year Highest Occurred | 1999 | 1991 | 1992 | 1987 | 1992 | 1974 | 1998 | 1971 | 1991 | 1988 | 1976 | 1976 | 1971 |
| Lowest Mean Max. Temperature (F) | 31.8 | 36.2 | 44.6 | 49.4 | 56.4 | 70.2 | 73.8 | 75.8 | 66.2 | 56.1 | 36.3 | 32.4 | 31.8 |
| Year Lowest Occurred | 1993 | 1989 | 1991 | 1975 | 1998 | 1995 | 1993 | 1976 | 1986 | 1984 | 1985 | 1972 | 1993 |
| Mean Temperature (F) | 30.3 | 33.8 | 37.9 | 43.5 | 50.3 | 57.6 | 64.1 | 63.9 | 56.2 | 47.2 | 36.3 | 29.5 | 45.9 |
| Highest Mean Temperature (F) | 35.6 | 41.3 | 43.4 | 49.4 | 57.5 | 63.0 | 68.1 | 68.9 | 60.2 | 53.5 | 43.2 | 35.6 | 68.9 |
| Year Highest Occurred | 1978 | 1992 | 1992 | 1987 | 1992 | 1974 | 1985 | 1971 | 1991 | 1988 | 1999 | 1980 | 1971 |
| Lowest Mean Temperature (F) | 22.9 | 23.2 | 33.3 | 36.3 | 45.5 | 53.0 | 55.8 | 59.0 | 50.9 | 43.2 | 26.9 | 21.3 | 21.3 |
| Year Lowest Occurred | 1979 | 1993 | 1971 | 1975 | 1977 | 1996 | 1993 | 1976 | 1986 | 1998 | 1985 | 1972 | 1972 |
| Mean Min. Temperature (F) | 21.1 | 23.0 | 25.5 | 28.6 | 34.3 | 39.9 | 44.4 | 43.8 | 36.3 | 29.6 | 25.8 | 19.6 | 31.0 |
| Highest Mean Min. Temperature (F) | 28.1 | 30.9 | 31.7 | 34.7 | 38.1 | 45.5 | 48.2 | 47.8 | 40.4 | 35.0 | 33.1 | 27.4 | 48.2 |
| Year Highest Occurred | 1998 | 1992 | 1983 | 1994 | 1987 | 1986 | 1985 | 1983 | 1994 | 1975 | 1999 | 1981 | 1985 |
| Lowest Mean Min. Temperature (F) | 12.9 | 9.3 | 20.2 | 23.2 | 30.8 | 34.9 | 37.7 | 39.3 | 30.6 | 23.3 | 15.1 | 10.3 | 9.3 |
| Year Lowest Occurred | 1979 | 1993 | 1971 | 1975 | 1972 | 1996 | 1993 | 1980 | 1972 | 1998 | 1993 | 1972 | 1993 |
| Mean Precipitation (in.) | 0.99 | 0.73 | 0.81 | 0.76 | 1.11 | 0.79 | 0.58 | 0.59 | 0.57 | 0.61 | 1.10 | 1.16 | 9.80 |
| Highest Precipitation (in.) | 2.56 | 2.71 | 1.91 | 2.16 | 4.98 | 2.52 | 3.46 | 2.32 | 1.91 | 1.79 | 3.56 | 3.82 | 4.98 |
| Year Highest Occurred | 1993 | 1986 | 1983 | 2000 | 1998 | 1982 | 1987 | 1976 | 1982 | 2000 | 1981 | 1996 | 1998 |
| Lowest Precipitation (in.) | 0.04 | 0.10 | 0.08 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 0.00 | 0.00 |
| Year Lowest Occurred | 1991 | 1992 | 1994 | 1977 | 1992 | 1974 | 1989 | 1995 | 1991 | 1988 | 1976 | 1976 | 1992 |
| Heating Degree Days (F) | 1077. | 874. | 840. | 647. | 455. | 242. | 107. | 109. | 277. | 555. | 862. | 1100. | 7145. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 20. | 77. | 73. | 11. | 0. | 0. | 0. | 182. |