| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 13.0 | 20.9 | 33.3 | 53.0 | 69.7 | 77.7 | 81.7 | 81.1 | 69.7 | 55.0 | 32.9 | 18.3 | 50.5 |
| Highest Mean Max. Temperature (F) | 28.0 | 34.3 | 46.1 | 64.5 | 79.4 | 89.4 | 87.4 | 88.7 | 77.0 | 60.3 | 47.2 | 31.9 | 89.4 |
| Year Highest Occurred | 1990 | 2000 | 2000 | 1987 | 1977 | 1988 | 1988 | 1983 | 1976 | 1973 | 1999 | 1997 | 1988 |
| Lowest Mean Max. Temperature (F) | -0.6 | 3.2 | 23.2 | 39.5 | 58.8 | 69.7 | 73.0 | 74.6 | 62.9 | 47.6 | 21.6 | 4.5 | -0.6 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1979 | 1979 | 1982 | 1992 | 1985 | 1985 | 1991 | 1996 | 1983 | 1982 |
| Mean Temperature (F) | 5.1 | 12.9 | 25.7 | 43.0 | 58.2 | 67.0 | 71.1 | 69.6 | 58.9 | 45.6 | 26.3 | 11.0 | 41.2 |
| Highest Mean Temperature (F) | 18.8 | 27.6 | 36.6 | 52.4 | 67.6 | 75.2 | 75.7 | 76.6 | 64.5 | 50.9 | 37.4 | 26.3 | 76.6 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1988 | 1983 | 1983 | 1978 | 1973 | 1999 | 1997 | 1983 |
| Lowest Mean Temperature (F) | -8.5 | -3.6 | 15.4 | 33.4 | 50.2 | 60.0 | 63.8 | 63.8 | 53.8 | 39.2 | 13.4 | -1.1 | -8.5 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1979 | 1979 | 1982 | 1992 | 1977 | 1985 | 1991 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | -2.8 | 4.9 | 18.0 | 32.9 | 46.6 | 56.2 | 60.4 | 58.1 | 48.1 | 36.1 | 19.7 | 3.7 | 31.8 |
| Highest Mean Min. Temperature (F) | 9.6 | 22.8 | 27.9 | 40.3 | 55.8 | 61.4 | 65.7 | 64.5 | 53.0 | 41.7 | 29.9 | 20.7 | 65.7 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1987 | 1977 | 1995 | 1983 | 1983 | 1978 | 1994 | 1981 | 1997 | 1983 |
| Lowest Mean Min. Temperature (F) | -16.4 | -10.4 | 7.5 | 26.4 | 40.5 | 50.2 | 54.6 | 52.5 | 41.9 | 29.2 | 5.0 | -9.0 | -16.4 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1996 | 1997 | 1982 | 1992 | 1977 | 1974 | 1976 | 1985 | 1985 | 1982 |
| Mean Precipitation (in.) | 0.52 | 0.50 | 0.85 | 1.13 | 2.31 | 3.30 | 2.77 | 2.39 | 1.76 | 1.46 | 0.90 | 0.43 | 18.32 |
| Highest Precipitation (in.) | 2.33 | 1.48 | 1.87 | 3.86 | 6.00 | 9.97 | 7.78 | 5.68 | 6.30 | 4.37 | 4.21 | 1.50 | 9.97 |
| Year Highest Occurred | 1989 | 1981 | 1979 | 1986 | 1977 | 2000 | 1993 | 1985 | 1991 | 1984 | 2000 | 1988 | 2000 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.17 | 0.00 | 0.14 | 0.66 | 0.13 | 0.35 | 0.24 | 0.04 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1999 | 1993 | 1998 | 1988 | 2000 | 1988 | 1976 | 1996 | 1974 | 1989 | 1976 | 1998 | 1999 |
| Heating Degree Days (F) | 1859. | 1459. | 1221. | 667. | 264. | 78. | 19. | 46. | 218. | 603. | 1161. | 1673. | 9268. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 5. | 53. | 137. | 207. | 188. | 34. | 0. | 0. | 0. | 624. |