| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 30.8 | 34.2 | 42.5 | 53.3 | 63.6 | 73.9 | 81.8 | 80.3 | 70.7 | 58.2 | 42.0 | 32.9 | 55.4 |
| Highest Mean Max. Temperature (F) | 39.5 | 41.4 | 51.3 | 61.8 | 69.9 | 81.5 | 86.3 | 83.9 | 78.2 | 65.6 | 51.1 | 38.6 | 86.3 |
| Year Highest Occurred | 1999 | 1981 | 1986 | 1977 | 1992 | 1988 | 1988 | 1994 | 1979 | 1988 | 1999 | 1995 | 1988 |
| Lowest Mean Max. Temperature (F) | 20.5 | 25.4 | 34.9 | 45.5 | 57.7 | 65.2 | 73.3 | 76.3 | 65.0 | 49.6 | 35.0 | 25.4 | 20.5 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1975 | 1995 | 1998 | 1993 | 1993 | 1986 | 1984 | 2000 | 1985 | 1979 |
| Mean Temperature (F) | 20.9 | 22.6 | 31.3 | 40.5 | 49.4 | 57.9 | 64.8 | 63.4 | 54.8 | 44.0 | 31.7 | 23.3 | 42.1 |
| Highest Mean Temperature (F) | 30.0 | 30.3 | 38.3 | 45.8 | 54.5 | 64.0 | 69.1 | 67.7 | 59.7 | 50.3 | 39.5 | 30.0 | 69.1 |
| Year Highest Occurred | 1999 | 2000 | 1986 | 1987 | 1992 | 1988 | 1988 | 2000 | 1990 | 1988 | 1995 | 1995 | 1988 |
| Lowest Mean Temperature (F) | 8.0 | 11.6 | 21.4 | 34.2 | 45.0 | 53.2 | 57.2 | 59.4 | 50.0 | 38.1 | 25.8 | 15.3 | 8.0 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1984 | 1975 | 1998 | 1993 | 1974 | 1986 | 1984 | 2000 | 1990 | 1979 |
| Mean Min. Temperature (F) | 10.9 | 11.0 | 20.0 | 27.6 | 35.2 | 41.8 | 47.7 | 46.4 | 38.8 | 29.8 | 21.3 | 13.6 | 28.7 |
| Highest Mean Min. Temperature (F) | 20.5 | 22.1 | 25.3 | 32.9 | 39.5 | 46.5 | 52.2 | 52.1 | 45.3 | 34.9 | 29.0 | 22.3 | 52.2 |
| Year Highest Occurred | 1999 | 2000 | 1986 | 1990 | 2000 | 1988 | 1998 | 2000 | 1998 | 1988 | 1995 | 1977 | 1998 |
| Lowest Mean Min. Temperature (F) | -4.6 | -2.2 | 7.8 | 22.7 | 30.8 | 37.0 | 41.1 | 39.1 | 33.6 | 24.5 | 14.6 | 3.4 | -4.6 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1984 | 1975 | 1979 | 1993 | 1974 | 1975 | 1975 | 1993 | 1990 | 1979 |
| Mean Precipitation (in.) | 1.07 | 0.91 | 1.14 | 1.28 | 1.44 | 1.05 | 0.85 | 0.92 | 1.23 | 1.27 | 1.13 | 1.02 | 13.31 |
| Highest Precipitation (in.) | 3.58 | 4.25 | 2.94 | 3.70 | 3.16 | 4.21 | 2.22 | 5.13 | 4.65 | 2.77 | 2.84 | 3.48 | 5.13 |
| Year Highest Occurred | 1980 | 1986 | 1995 | 1999 | 1980 | 1998 | 1993 | 1983 | 1982 | 1981 | 1996 | 1996 | 1983 |
| Lowest Precipitation (in.) | 0.15 | 0.00 | 0.25 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1983 | 1991 | 1992 | 1987 | 1972 | 1994 | 1988 | 1996 | 1974 | 1988 | 1976 | 1986 | 1991 |
| Heating Degree Days (F) | 1369. | 1188. | 1045. | 737. | 483. | 232. | 80. | 102. | 311. | 652. | 1000. | 1293. | 8492. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 17. | 73. | 51. | 4. | 0. | 0. | 0. | 145. |