| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 47.6 | 53.0 | 60.2 | 68.3 | 77.2 | 87.8 | 92.3 | 89.7 | 82.2 | 71.6 | 57.0 | 48.5 | 69.6 |
| Highest Mean Max. Temperature (F) | 60.0 | 62.7 | 71.8 | 74.9 | 84.7 | 93.9 | 99.9 | 96.7 | 89.5 | 77.5 | 67.1 | 58.2 | 99.9 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1981 | 1974 | 1994 | 1980 | 1983 | 1998 | 1979 | 1999 | 1980 | 1980 |
| Lowest Mean Max. Temperature (F) | 33.8 | 41.8 | 52.9 | 59.2 | 69.3 | 78.3 | 87.5 | 84.2 | 75.2 | 63.0 | 44.7 | 35.4 | 33.8 |
| Year Lowest Occurred | 1979 | 1989 | 1998 | 1997 | 1995 | 1989 | 1996 | 1992 | 1974 | 1984 | 1972 | 1983 | 1979 |
| Mean Temperature (F) | 31.9 | 36.6 | 43.6 | 52.1 | 61.8 | 71.8 | 76.6 | 74.5 | 66.2 | 54.6 | 41.2 | 33.1 | 53.7 |
| Highest Mean Temperature (F) | 42.7 | 43.8 | 53.9 | 57.8 | 67.5 | 77.2 | 82.5 | 79.1 | 72.1 | 57.9 | 48.0 | 39.1 | 82.5 |
| Year Highest Occurred | 1986 | 2000 | 1986 | 1986 | 1985 | 1986 | 1980 | 2000 | 1998 | 1998 | 1999 | 1980 | 1980 |
| Lowest Mean Temperature (F) | 19.7 | 27.5 | 37.0 | 44.5 | 55.2 | 65.4 | 73.8 | 70.9 | 58.7 | 48.8 | 32.8 | 19.6 | 19.6 |
| Year Lowest Occurred | 1979 | 1978 | 1984 | 1983 | 1983 | 1982 | 1989 | 1974 | 1974 | 1980 | 1972 | 1983 | 1983 |
| Mean Min. Temperature (F) | 16.2 | 20.2 | 26.9 | 35.9 | 46.3 | 55.8 | 60.9 | 59.3 | 50.2 | 37.6 | 25.3 | 17.7 | 37.7 |
| Highest Mean Min. Temperature (F) | 25.3 | 28.0 | 35.9 | 41.2 | 51.9 | 62.1 | 65.0 | 63.6 | 56.3 | 41.9 | 31.3 | 24.2 | 65.0 |
| Year Highest Occurred | 1986 | 1987 | 1986 | 1986 | 1985 | 1986 | 1980 | 1986 | 1985 | 1998 | 1988 | 1984 | 1980 |
| Lowest Mean Min. Temperature (F) | 5.6 | 12.4 | 18.6 | 29.7 | 39.4 | 49.9 | 56.1 | 55.3 | 42.2 | 30.6 | 18.2 | 3.8 | 3.8 |
| Year Lowest Occurred | 1979 | 1978 | 1984 | 1983 | 1983 | 1983 | 1984 | 1984 | 1974 | 1980 | 1982 | 1983 | 1983 |
| Mean Precipitation (in.) | 0.31 | 0.34 | 0.99 | 1.51 | 2.59 | 2.49 | 2.91 | 2.53 | 1.47 | 1.19 | 0.54 | 0.34 | 17.21 |
| Highest Precipitation (in.) | 1.09 | 1.41 | 4.78 | 5.32 | 6.43 | 6.80 | 8.45 | 7.35 | 7.04 | 5.29 | 1.73 | 1.40 | 8.45 |
| Year Highest Occurred | 1990 | 1990 | 1973 | 1976 | 1978 | 1989 | 1998 | 1999 | 1988 | 1998 | 1972 | 1997 | 1998 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.04 | 0.34 | 0.16 | 0.15 | 0.01 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1986 | 1994 | 1978 | 1978 | 1997 | 1981 | 1987 | 1988 | 2000 | 1988 | 1989 | 1988 | 1986 |
| Heating Degree Days (F) | 1026. | 796. | 666. | 396. | 169. | 31. | 1. | 6. | 78. | 326. | 717. | 988. | 5200. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 8. | 68. | 234. | 360. | 300. | 114. | 4. | 0. | 0. | 1088. |