| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 34.1 | 41.3 | 50.7 | 62.4 | 72.7 | 82.7 | 91.5 | 90.5 | 77.7 | 63.8 | 46.0 | 36.5 | 62.5 |
| Highest Mean Max. Temperature (F) | 46.0 | 53.1 | 60.2 | 73.1 | 80.3 | 97.5 | 97.4 | 99.9 | 87.3 | 70.5 | 58.9 | 48.4 | 99.9 |
| Year Highest Occurred | 1992 | 1992 | 1986 | 1987 | 1985 | 1988 | 1988 | 1971 | 1979 | 1974 | 1999 | 1979 | 1971 |
| Lowest Mean Max. Temperature (F) | 20.0 | 25.3 | 39.2 | 52.5 | 63.0 | 74.4 | 76.2 | 82.6 | 70.0 | 58.6 | 28.2 | 17.7 | 17.7 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1975 | 1996 | 1998 | 1993 | 1993 | 1986 | 1984 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 21.3 | 27.9 | 36.8 | 47.2 | 57.0 | 66.3 | 72.9 | 71.5 | 59.9 | 48.1 | 33.3 | 23.9 | 47.2 |
| Highest Mean Temperature (F) | 32.7 | 37.2 | 45.7 | 54.5 | 62.3 | 78.9 | 77.5 | 78.6 | 67.1 | 52.3 | 43.6 | 33.1 | 78.9 |
| Year Highest Occurred | 1986 | 1999 | 1986 | 1987 | 1988 | 1988 | 1998 | 1983 | 1998 | 1979 | 1999 | 1999 | 1988 |
| Lowest Mean Temperature (F) | 6.4 | 13.0 | 27.5 | 40.1 | 51.5 | 60.7 | 63.6 | 65.5 | 55.0 | 43.5 | 17.9 | 4.7 | 4.7 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1997 | 1996 | 1998 | 1993 | 1992 | 1984 | 1984 | 1985 | 1983 | 1983 |
| Mean Min. Temperature (F) | 8.5 | 14.5 | 22.9 | 31.9 | 41.2 | 49.8 | 54.3 | 52.5 | 42.0 | 32.4 | 20.5 | 11.2 | 31.8 |
| Highest Mean Min. Temperature (F) | 22.7 | 26.9 | 31.2 | 36.0 | 45.3 | 60.2 | 59.6 | 60.2 | 50.1 | 35.7 | 29.2 | 21.0 | 60.2 |
| Year Highest Occurred | 1986 | 1999 | 1986 | 1987 | 1987 | 1988 | 1998 | 1983 | 1998 | 1973 | 1998 | 1999 | 1988 |
| Lowest Mean Min. Temperature (F) | -7.2 | 0.3 | 15.8 | 26.5 | 37.1 | 45.9 | 47.8 | 46.6 | 37.9 | 28.3 | 7.6 | -8.2 | -8.2 |
| Year Lowest Occurred | 1979 | 1979 | 1996 | 1997 | 1983 | 1989 | 1971 | 1992 | 1972 | 1984 | 1985 | 1983 | 1983 |
| Mean Precipitation (in.) | 0.65 | 0.48 | 0.80 | 1.61 | 2.44 | 2.31 | 1.16 | 1.02 | 1.23 | 1.37 | 0.70 | 0.59 | 14.36 |
| Highest Precipitation (in.) | 2.29 | 1.32 | 2.23 | 4.50 | 6.09 | 4.80 | 4.41 | 3.43 | 4.53 | 5.96 | 2.28 | 1.64 | 6.09 |
| Year Highest Occurred | 1971 | 1972 | 1989 | 1975 | 1978 | 1993 | 1993 | 1972 | 1986 | 1971 | 1978 | 1984 | 1978 |
| Lowest Precipitation (in.) | 0.09 | 0.04 | 0.07 | 0.13 | 0.52 | 0.87 | 0.11 | 0.08 | 0.22 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1992 | 1992 | 1999 | 1983 | 1998 | 1996 | 1988 | 1994 | 1979 | 1987 | 1972 | 1994 | 1987 |
| Heating Degree Days (F) | 1354. | 1038. | 874. | 536. | 269. | 95. | 25. | 33. | 199. | 524. | 951. | 1275. | 7173. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 19. | 134. | 268. | 234. | 45. | 0. | 0. | 0. | 700. |