Westborough, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Westborough, a community in Worcester County, Massachusetts.
This Afternoon
73°F
Mostly Cloudy
Mostly cloudy. High near 73, with temperatures falling to around 64 in the afternoon. Southwest wind around 7 mph.
7-day forecast for Westborough
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Mostly Cloudy | 7 mph SW | 2% |
| Tonight | 52°F | Mostly Cloudy | 6 mph SW | 3% |
| Wednesday | 75°F | Mostly Sunny | 6 to 9 mph SW | 4% |
| Wednesday Night | 55°F | Partly Cloudy | 7 mph SW | 2% |
| Thursday | 73°F | Mostly Cloudy then Slight Chance Light Rain | 7 to 10 mph SW | 19% |
| Thursday Night | 62°F | Light Rain Likely | 5 to 8 mph SW | 62% |
| Friday | 69°F | Rain | 6 mph S | 85% |
| Friday Night | 55°F | Rain | 5 mph S | 85% |
| Saturday | 64°F | Light Rain Likely | 7 mph NW | 70% |
| Saturday Night | 43°F | Chance Light Rain | 6 mph NW | 43% |
| Sunday | 59°F | Slight Chance Light Rain then Mostly Sunny | 5 to 8 mph W | 23% |
| Sunday Night | 36°F | Partly Cloudy | 5 mph W | 9% |
| Monday | 57°F | Slight Chance Light Rain | 5 to 10 mph W | 20% |
| Monday Night | 35°F | Slight Chance Light Rain | 8 mph W | 20% |
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
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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 Nov 3, 2026.