South Ashburnham, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Ashburnham, a community in Worcester County, Massachusetts.
Today
80°F
Sunny
Sunny, with a high near 80. West wind around 6 mph.
7-day forecast for South Ashburnham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Sunny | 6 mph W | 0% |
| Tonight | 57°F | Mostly Clear | 5 mph W | 0% |
| Wednesday | 79°F | Partly Sunny | 1 to 6 mph W | 0% |
| Wednesday Night | 62°F | Partly Cloudy | 5 mph SW | 8% |
| Thursday | 82°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 7 mph SW | 38% |
| Thursday Night | 67°F | Chance Showers And Thunderstorms | 6 mph SW | 51% |
| Friday | 83°F | Mostly Sunny then Chance Rain Showers | 5 to 8 mph W | 25% |
| Friday Night | 66°F | Chance Rain Showers then Mostly Cloudy | 2 to 6 mph W | 32% |
| Saturday | 81°F | Mostly Sunny then Chance Rain Showers | 2 to 7 mph W | 26% |
| Saturday Night | 65°F | Chance Rain Showers then Mostly Cloudy | 5 mph W | 35% |
| Sunday | 83°F | Mostly Sunny | 2 to 7 mph W | 11% |
| Sunday Night | 65°F | Mostly Clear | 6 mph SW | 13% |
| Monday | 83°F | Sunny | 5 to 10 mph W | 9% |
| Monday Night | 64°F | Partly Cloudy | 6 to 9 mph W | 11% |
Forecast source: National Weather Service (api.weather.gov) for South Ashburnham (42.621, -71.943). Updated through the day.
Growing snapshot for South Ashburnham
Last spring frost
May 2
First fall frost
Oct 13
Growing season
163 days
Hardiness zone
5b
More local growing data for South Ashburnham: nearby ZIP 01440 weather · frost dates · planting calendar · Massachusetts frost dates
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Climate data from the nearest NOAA station, Ashburnham, Ma (4.1 mi from South Ashburnham). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.