Williamstown, MA Weather Forecast
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Williamstown Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY |
| Mostly Cloudy | Partly Cloudy | Chance of Showers | Chance of Showers | Sunny | Mostly Clear | Mostly Sunny | Mostly Cloudy | Mostly Sunny | Mostly Clear | Mostly Clear | Sunny |
| Hi: 71°FHi: 22°C | Lo: 65°FLo: 18°C | Hi: 75°FHi: 24°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 40°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 61°FHi: 16°C | Hi: 51°FHi: 11°C Lo: 35°FLo: 2°C | Hi: 51°FHi: 11°C Lo: 35°FLo: 2°C | Hi: 61°FHi: 16°C |
| POP: 50% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 830 AM EDT Thu Oct 01 2026 

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Issued: 644 AM EDT Thu Oct 1 2026
Key Messages
1) There is a low probability of impactful weather through early next week.
Discussion
... KEY MESSAGE 1...
In the wake of a passing overnight shortwave, weak warm air advection and isentropic lift will allow for continued mostly cloudy conditions for today with a few isolated, light rain showers, mainly for areas north and west of Albany. Despite warm 850 hPa temperatures in place (+13 to 15C), clouds should limit how warm areas get. Most areas should reach the mid-60s to mid-70s but s...
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