| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 33.2 | 37.9 | 45.6 | 54.3 | 64.0 | 71.7 | 81.4 | 82.6 | 72.3 | 59.0 | 40.5 | 33.0 | 56.3 |
| Highest Mean Max. Temperature (F) | 39.3 | 43.4 | 58.3 | 64.2 | 70.6 | 79.9 | 89.9 | 88.4 | 81.1 | 69.8 | 49.1 | 38.2 | 89.9 |
| Year Highest Occurred | 1994 | 1992 | 1992 | 1987 | 1992 | 1986 | 1985 | 1986 | 1990 | 1987 | 1999 | 1979 | 1985 |
| Lowest Mean Max. Temperature (F) | 26.2 | 31.9 | 39.0 | 45.8 | 57.6 | 65.6 | 69.1 | 76.6 | 62.5 | 52.4 | 31.8 | 26.4 | 26.2 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1996 | 1991 | 1993 | 1985 | 1985 | 1985 | 1985 | 1990 | 1979 |
| Mean Temperature (F) | 25.0 | 28.2 | 34.3 | 41.4 | 49.6 | 56.2 | 62.4 | 61.9 | 53.1 | 43.1 | 32.2 | 25.3 | 42.7 |
| Highest Mean Temperature (F) | 32.4 | 33.7 | 41.6 | 47.6 | 54.5 | 61.7 | 69.2 | 65.9 | 59.2 | 47.9 | 38.5 | 30.3 | 69.2 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1987 | 1993 | 1986 | 1998 | 1971 | 1998 | 1988 | 1999 | 1979 | 1998 |
| Lowest Mean Temperature (F) | 12.6 | 20.2 | 29.1 | 35.2 | 45.7 | 52.1 | 55.3 | 57.9 | 47.9 | 39.5 | 22.6 | 17.0 | 12.6 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1996 | 1976 | 1993 | 1980 | 1971 | 1985 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 16.7 | 18.4 | 23.0 | 28.5 | 35.1 | 40.7 | 43.4 | 41.2 | 33.8 | 27.2 | 23.9 | 17.6 | 29.1 |
| Highest Mean Min. Temperature (F) | 25.5 | 23.9 | 27.2 | 32.2 | 39.3 | 43.5 | 49.4 | 47.0 | 39.4 | 30.5 | 29.4 | 23.1 | 49.4 |
| Year Highest Occurred | 1981 | 1992 | 2000 | 1981 | 1993 | 1986 | 1998 | 1999 | 1998 | 2000 | 1998 | 1999 | 1998 |
| Lowest Mean Min. Temperature (F) | -1.0 | 8.5 | 16.0 | 24.3 | 31.2 | 38.0 | 39.7 | 36.4 | 30.1 | 21.5 | 13.5 | 5.0 | -1.0 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1982 | 1982 | 1976 | 1986 | 1987 | 1983 | 1987 | 1985 | 1985 | 1979 |
| Mean Precipitation (in.) | 5.44 | 4.29 | 3.92 | 3.39 | 3.86 | 2.86 | 1.80 | 1.39 | 2.00 | 2.95 | 5.29 | 5.13 | 42.32 |
| Highest Precipitation (in.) | 10.95 | 8.59 | 7.13 | 7.23 | 7.05 | 7.29 | 6.23 | 4.74 | 6.04 | 6.96 | 10.45 | 11.00 | 11.00 |
| Year Highest Occurred | 1999 | 1972 | 1989 | 1996 | 1998 | 1981 | 1997 | 1975 | 1985 | 1977 | 1973 | 1977 | 1977 |
| Lowest Precipitation (in.) | 0.98 | 1.29 | 0.54 | 0.74 | 1.82 | 0.57 | 0.00 | 0.12 | 0.02 | 0.00 | 1.43 | 1.11 | 0.00 |
| Year Lowest Occurred | 1985 | 1977 | 1992 | 1977 | 1982 | 1996 | 1984 | 1973 | 1990 | 1987 | 1976 | 1985 | 1984 |
| Heating Degree Days (F) | 1241. | 1032. | 951. | 708. | 480. | 269. | 137. | 137. | 363. | 679. | 985. | 1230. | 8212. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 6. | 57. | 41. | 5. | 0. | 0. | 0. | 109. |