| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 33.7 | 40.1 | 51.1 | 62.0 | 71.5 | 80.7 | 90.9 | 90.8 | 80.3 | 65.9 | 47.0 | 35.2 | 62.4 |
| Highest Mean Max. Temperature (F) | 39.1 | 48.3 | 61.3 | 72.8 | 79.8 | 89.2 | 96.7 | 98.3 | 88.5 | 77.7 | 55.7 | 42.5 | 98.3 |
| Year Highest Occurred | 1998 | 1992 | 1992 | 1987 | 1992 | 1974 | 1985 | 1971 | 1990 | 1988 | 1976 | 1976 | 1971 |
| Lowest Mean Max. Temperature (F) | 23.1 | 29.1 | 39.9 | 52.2 | 63.8 | 72.8 | 79.6 | 83.3 | 70.2 | 59.3 | 37.5 | 23.3 | 23.1 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1977 | 1993 | 1993 | 1976 | 1985 | 1989 | 1985 | 1985 | 1979 |
| Mean Temperature (F) | 25.3 | 30.5 | 40.1 | 48.6 | 56.7 | 64.7 | 73.0 | 72.6 | 62.6 | 50.4 | 36.9 | 26.8 | 49.0 |
| Highest Mean Temperature (F) | 32.7 | 39.8 | 46.8 | 55.1 | 61.9 | 71.2 | 79.0 | 77.9 | 68.9 | 58.4 | 42.1 | 33.7 | 79.0 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1987 | 1992 | 1977 | 1985 | 1971 | 1990 | 1988 | 1999 | 1977 | 1985 |
| Lowest Mean Temperature (F) | 12.7 | 17.1 | 29.7 | 42.0 | 51.5 | 58.0 | 64.2 | 67.0 | 56.1 | 45.7 | 27.3 | 13.8 | 12.7 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1977 | 1993 | 1993 | 1993 | 1985 | 1985 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 16.8 | 20.9 | 29.1 | 35.1 | 41.9 | 48.6 | 55.1 | 54.3 | 44.8 | 34.9 | 26.7 | 18.3 | 35.5 |
| Highest Mean Min. Temperature (F) | 26.7 | 33.2 | 34.5 | 40.9 | 47.3 | 54.0 | 61.4 | 58.3 | 50.1 | 40.0 | 32.0 | 27.7 | 61.4 |
| Year Highest Occurred | 1978 | 1991 | 1986 | 1991 | 1991 | 1977 | 1985 | 1990 | 1998 | 1979 | 1998 | 1977 | 1985 |
| Lowest Mean Min. Temperature (F) | 2.3 | 5.2 | 19.0 | 30.1 | 38.2 | 43.2 | 48.9 | 47.8 | 39.2 | 30.6 | 17.1 | 4.3 | 2.3 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1982 | 1974 | 1993 | 1993 | 1987 | 1971 | 1976 | 1993 | 1985 | 1979 |
| Mean Precipitation (in.) | 3.03 | 2.88 | 2.56 | 1.95 | 2.05 | 1.49 | 0.67 | 0.58 | 1.11 | 1.57 | 3.28 | 3.19 | 24.36 |
| Highest Precipitation (in.) | 5.58 | 6.30 | 7.09 | 5.55 | 5.08 | 4.46 | 2.35 | 2.19 | 3.72 | 5.83 | 9.85 | 7.84 | 9.85 |
| Year Highest Occurred | 1995 | 1982 | 1983 | 1978 | 1996 | 1993 | 1976 | 1975 | 1985 | 1975 | 1973 | 1996 | 1973 |
| Lowest Precipitation (in.) | 0.09 | 0.10 | 0.11 | 0.00 | 0.18 | 0.33 | 0.00 | 0.00 | 0.00 | 0.00 | 0.06 | 0.05 | 0.00 |
| Year Lowest Occurred | 1991 | 1997 | 1994 | 1999 | 1997 | 1994 | 1999 | 2000 | 1999 | 1987 | 1976 | 2000 | 1999 |
| Heating Degree Days (F) | 1232. | 966. | 772. | 492. | 273. | 110. | 22. | 23. | 149. | 454. | 846. | 1186. | 6525. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 15. | 99. | 270. | 258. | 75. | 2. | 0. | 0. | 719. |