Westborough, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Westborough, a community in Worcester County, Massachusetts.
Today
83°F
Sunny
Sunny, with a high near 83. West wind around 6 mph.
7-day forecast for Westborough
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 6 mph W | 0% |
| Tonight | 60°F | Partly Cloudy | 5 mph SW | 2% |
| Wednesday | 83°F | Mostly Sunny | 2 to 6 mph W | 2% |
| Wednesday Night | 65°F | Partly Cloudy | 5 mph SW | 6% |
| Thursday | 86°F | Mostly Sunny then Chance Rain Showers | 7 mph SW | 28% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 7 mph SW | 37% |
| Friday | 88°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 8 mph SW | 23% |
| Friday Night | 69°F | Chance Rain Showers then Partly Cloudy | 6 mph W | 32% |
| Saturday | 86°F | Mostly Sunny then Chance Rain Showers | 3 to 7 mph W | 32% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 5 mph W | 43% |
| Sunday | 87°F | Mostly Sunny | 3 to 7 mph W | 12% |
| Sunday Night | 68°F | Mostly Clear | 6 mph SW | 14% |
| Monday | 87°F | Sunny | 5 to 9 mph W | 10% |
| Monday Night | 67°F | Mostly Clear | 8 mph W | 12% |
Forecast source: National Weather Service (api.weather.gov) for Westborough (42.267, -71.617). Updated through the day.
Growing snapshot for Westborough
Last spring frost
Apr 30
First fall frost
Oct 9
Growing season
162 days
Hardiness zone
6b
More local growing data for Westborough: nearby ZIP 01581 weather · frost dates · planting calendar · Massachusetts frost dates
Nearby towns & communities
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Northborough
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Climate data from the nearest NOAA station, West Medway, Ma (13.1 mi from Westborough). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.