| NWS Forecast for: Williamstown MA Issued by: National Weather Service Albany, NY Last Update: 8:36 pm EDT Jul 19, 2026 |  |
| Overnight: Mostly clear, with a low around 11. Calm wind. Monday: Sunny, with a high near 27. Calm wind. Monday Night: Increasing clouds, with a low around 14. Calm wind becoming south 5 to 8 km/h after midnight. Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 26. South wind 11 to 21 km/h, with gusts as high as 39 km/h. Chance of precipitation is 70%. New rainfall amounts between 2.5 and 5 mm possible. Tuesday Night: Showers and possibly a thunderstorm. Low around 17. Southeast wind 8 to 13 km/h, with gusts as high as 32 km/h. Chance of precipitation is 90%. New rainfall amounts between 5 and 7.5 mm possible. Wednesday: Showers, with thunderstorms also possible after 11am. High near 25. Chance of precipitation is 90%. New rainfall amounts between 5 and 7.5 mm possible. Wednesday Night: Partly cloudy, with a low around 12. Thursday: Mostly sunny, with a high near 24. Thursday Night: Mostly clear, with a low around 11. Friday: Sunny, with a high near 26. Friday Night: Mostly clear, with a low around 13. Saturday: Sunny, with a high near 27. Saturday Night: Partly cloudy, with a low around 13. Sunday: Mostly sunny, with a high near 26. | |
| Williamstown MA 42.72°N 73.2°W (Elev. 627 m) | |
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