Williamstown, MA Weather & Growing Conditions
Today
80°F
Sunny
Sunny, with a high near 80. West wind 1 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Sunny | 1 to 5 mph W | 0% |
| Tonight | 57°F | Partly Cloudy then Patchy Fog | 2 mph SW | 0% |
| Wednesday | 81°F | Patchy Fog then Partly Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 64°F | Mostly Cloudy then Chance Rain Showers | 3 mph S | 15% |
| Thursday | 84°F | Chance Showers And Thunderstorms | 1 to 5 mph SW | 67% |
| Thursday Night | 67°F | Chance Showers And Thunderstorms | 3 mph SW | 67% |
| Friday | 84°F | Chance Showers And Thunderstorms | 1 to 5 mph W | 67% |
| Friday Night | 65°F | Chance Showers And Thunderstorms | 0 to 3 mph W | 67% |
| Saturday | 82°F | Showers And Thunderstorms Likely | 0 to 5 mph W | 64% |
| Saturday Night | 63°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 to 3 mph W | 64% |
| Sunday | 83°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 6 mph W | 18% |
| Sunday Night | 64°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 5 mph SW | 18% |
| Monday | 83°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 9 mph W | 40% |
| Monday Night | 60°F | Chance Showers And Thunderstorms | 2 to 9 mph W | 40% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Williamstown, MA
Last spring frost
May 10
First fall frost
Oct 4
Growing season
147 days
Hardiness zone
5b
Explore more for Williamstown, MA: full frost dates · planting calendar · Massachusetts frost dates
Climate data from the nearest NOAA station, North Adams Harriman Ap, Ma (4.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.