Williamstown Weather Forecast
- 61
- 80
Slight Chance Thunderstorms
- 63
- 80
Slight Chance Thunderstorms
- 64
- 80
Chance Rain Showers
- 58
- 77
Slight Chance Thunderstorms
- 58
- 77
Slight Chance Thunderstorms
Today 17 Aug Rush
Mostly Cloudy, then becoming partly cloudy. A slight chance of Showers and Thunderstorms early this Morning, then a chance of Showers and Thunderstorms toward daybreak. A slight chance of Showers and Thunderstorms late this afternoon. Humid with Highs around 80. Light and variable Winds, becoming west around 5 Mph toward Daybreak, then becoming north late this afternoon. Chance of rain 50 percent.
Tonight 17 Aug Rush
Partly cloudy. Areas of fog. Lows around 60. North Winds around 5 Mph through the late Overnight, becoming light and variable.
Williamstown Temperature Statistics
August Temperature
Shelbyville Municipal Airport (19.9 miles)
Lowest 4 August, 2026
57.7 °FAverage August
74.5 °FHighest 10 August, 2026
89.7 °F
Climate (2021–2026)
Shelbyville Municipal Airport (19.9 miles)
Average Low 2021–2026
46.8 °FAverage 2021–2026
56.9 °FAverage High 2021–2026
67 °F