Westborough, MA Weather & Growing Conditions
This Afternoon
73°F
Mostly Cloudy
Mostly cloudy. High near 73, with temperatures falling to around 63 in the afternoon. Southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Mostly Cloudy | 5 mph SW | 2% |
| Tonight | 51°F | Mostly Cloudy | 5 mph SW | 3% |
| Wednesday | 76°F | Mostly Sunny | 5 to 9 mph SW | 4% |
| Wednesday Night | 55°F | Partly Cloudy | 7 mph SW | 2% |
| Thursday | 74°F | Mostly Cloudy then Slight Chance Light Rain | 6 to 10 mph SW | 19% |
| Thursday Night | 62°F | Light Rain Likely | 3 to 8 mph SW | 61% |
| Friday | 69°F | Rain | 5 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 | 5 mph NW | 44% |
| Sunday | 60°F | Slight Chance Light Rain then Mostly Sunny | 7 mph W | 23% |
| Sunday Night | 36°F | Partly Cloudy | 5 mph W | 9% |
| Monday | 58°F | Slight Chance Light Rain | 5 to 10 mph W | 20% |
| Monday Night | 35°F | Slight Chance Light Rain | 7 mph W | 20% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Westborough, MA
Last spring frost
Apr 30
First fall frost
Oct 9
Growing season
162 days
Hardiness zone
6b
Explore more for Westborough, MA: full frost dates · planting calendar · Massachusetts frost dates
Climate data from the nearest NOAA station, West Medway, Ma (13.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.