Weather forecast for: Williamstown MA
Last Update: 8:37 am EDT Sep 22, 2026
Today: Partly sunny, with a high near 65. East wind around 6 mph.
Tonight: Mostly cloudy, with a low around 40. Calm wind.
Wednesday: Mostly sunny, with a high near 66. East wind 5 to 9 mph.
Wednesday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 39. Light northeast wind.
Thursday: Patchy fog before 8am. Otherwise, sunny, with a high near 68. Northeast wind 3 to 7 mph.
Thursday Night: Mostly cloudy, with a low around 43.
Friday: A chance of showers after 2pm. Partly sunny, with a high near 66. Chance of precipitation is 30%.
Friday Night: A chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 50%.
Saturday: A chance of showers. Partly sunny, with a high near 64. Chance of precipitation is 30%.
Saturday Night: A chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.
Sunday: Mostly sunny, with a high near 68.
Sunday Night: Partly cloudy, with a low around 47.
Monday: Mostly sunny, with a high near 70.