Williamstown Weather Forecast
- 70
- 86
Rain Showers Likely
- 73
- 89
Slight Chance Thunderstorms
- 69
- 90
Rain Showers Likely
- 63
- 82
Chance Thunderstorms
- 64
- 82
Mostly Sunny
- 67
- 85
Chance Thunderstorms
Today 14 Aug Rush
Becoming partly cloudy late this afternoon. Showers toward daybreak. Scattered Thunderstorms. Numerous Showers. Some Thunderstorms may produce heavy rainfall toward daybreak. Some Thunderstorms may produce heavy rainfall late this afternoon. Locally heavy rainfall possible toward daybreak. Humid with Highs in the mid 80s. Northeast Winds around 5 Mph, becoming southwest around 5 Mph through early Afternoon, then becoming northwest around 5 Mph late this afternoon. Chance of rain 90 percent.
Tonight 14 Aug Rush
Partly cloudy. A slight chance of Showers and Thunderstorms through the late Overnight, then a chance of Showers and Thunderstorms toward daybreak. Some Thunderstorms may produce heavy rainfall through the late overnight. Humid with Lows around 70. Light and variable Winds, becoming east around 5 Mph toward daybreak. Chance of rain 40 percent.
Williamstown Temperature Statistics
August Temperature
Shelbyville Municipal Airport (19.9 miles)
Lowest 4 August, 2026
57.7 °FAverage August
74.9 °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