| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 39.6 | 44.8 | 51.8 | 58.2 | 66.1 | 74.6 | 83.5 | 83.7 | 74.9 | 62.7 | 47.2 | 39.5 | 60.6 |
| Highest Mean Max. Temperature (F) | 47.2 | 53.1 | 57.5 | 66.6 | 72.7 | 83.3 | 89.7 | 89.9 | 82.1 | 72.6 | 53.5 | 45.2 | 89.9 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 1977 | 1992 | 1974 | 1985 | 1971 | 1974 | 1988 | 1999 | 1980 | 1971 |
| Lowest Mean Max. Temperature (F) | 26.0 | 33.7 | 46.3 | 51.6 | 60.0 | 67.7 | 72.9 | 76.5 | 65.9 | 55.8 | 35.7 | 29.5 | 26.0 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1975 | 1977 | 1991 | 1993 | 1976 | 1985 | 1984 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 31.5 | 35.6 | 40.9 | 45.6 | 52.2 | 59.4 | 66.2 | 66.4 | 58.9 | 49.1 | 38.1 | 31.5 | 48.0 |
| Highest Mean Temperature (F) | 38.0 | 42.8 | 45.5 | 51.3 | 57.1 | 65.4 | 70.9 | 71.1 | 64.3 | 57.4 | 44.4 | 36.5 | 71.1 |
| Year Highest Occurred | 1994 | 1991 | 1986 | 1990 | 1993 | 1986 | 1985 | 1971 | 1990 | 1988 | 1999 | 1979 | 1971 |
| Lowest Mean Temperature (F) | 18.1 | 24.8 | 36.3 | 39.7 | 47.1 | 54.3 | 57.8 | 61.6 | 52.6 | 44.7 | 26.3 | 21.3 | 18.1 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1975 | 1977 | 1991 | 1993 | 1980 | 1985 | 1984 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 23.3 | 26.3 | 29.9 | 33.0 | 38.2 | 44.1 | 48.9 | 49.0 | 42.8 | 35.4 | 28.9 | 23.5 | 35.3 |
| Highest Mean Min. Temperature (F) | 29.4 | 32.8 | 34.8 | 38.2 | 43.4 | 49.2 | 53.9 | 54.1 | 47.4 | 42.2 | 35.3 | 28.8 | 54.1 |
| Year Highest Occurred | 1992 | 1992 | 1978 | 1989 | 1993 | 1978 | 1978 | 1977 | 1990 | 1988 | 1999 | 1973 | 1977 |
| Lowest Mean Min. Temperature (F) | 10.2 | 15.8 | 26.0 | 27.9 | 34.3 | 38.4 | 42.7 | 42.6 | 39.0 | 31.8 | 17.0 | 13.0 | 10.2 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1976 | 1993 | 1980 | 1971 | 1998 | 1985 | 1985 | 1979 |
| Mean Precipitation (in.) | 1.64 | 1.27 | 1.26 | 1.11 | 1.37 | 1.04 | 0.43 | 0.61 | 0.75 | 0.95 | 1.88 | 1.62 | 13.93 |
| Highest Precipitation (in.) | 3.48 | 3.34 | 3.04 | 2.65 | 5.57 | 2.57 | 1.47 | 5.37 | 4.51 | 2.70 | 4.66 | 5.79 | 5.79 |
| Year Highest Occurred | 1995 | 1986 | 1983 | 1983 | 1998 | 1997 | 1978 | 1976 | 1982 | 1982 | 1984 | 1981 | 1981 |
| Lowest Precipitation (in.) | 0.26 | 0.30 | 0.35 | 0.00 | 0.19 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.29 | 0.17 | 0.00 |
| Year Lowest Occurred | 1985 | 1990 | 1992 | 1977 | 1975 | 1974 | 2000 | 1996 | 1999 | 1988 | 1993 | 1976 | 1977 |
| Heating Degree Days (F) | 1041. | 826. | 750. | 582. | 400. | 204. | 78. | 72. | 220. | 495. | 809. | 1040. | 6517. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 2. | 34. | 116. | 113. | 35. | 1. | 0. | 0. | 301. |