South Ashburnham, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Ashburnham, a community in Worcester County, Massachusetts.
This Afternoon
77°F
Sunny
Sunny, with a high near 77. Northwest wind around 9 mph, with gusts as high as 23 mph.
7-day forecast for South Ashburnham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Sunny | 9 mph NW | 0% |
| Tonight | 44°F | Partly Cloudy | 3 to 8 mph N | 0% |
| Saturday | 64°F | Sunny | 3 mph NE | 0% |
| Saturday Night | 43°F | Partly Cloudy | 2 mph S | 2% |
| Sunday | 58°F | Rain Showers | 2 to 6 mph SE | 87% |
| Sunday Night | 48°F | Rain Showers | 2 to 6 mph NE | 85% |
| Monday | 61°F | Slight Chance Rain Showers then Mostly Sunny | 8 mph N | 15% |
| Monday Night | 44°F | Partly Cloudy | 3 to 7 mph NE | 5% |
| Tuesday | 57°F | Mostly Cloudy | 9 mph NE | 5% |
| Tuesday Night | 42°F | Mostly Cloudy | 5 to 9 mph NE | 3% |
| Wednesday | 56°F | Partly Sunny | 9 to 14 mph NE | 6% |
| Wednesday Night | 43°F | Mostly Cloudy then Slight Chance Rain Showers | 7 to 10 mph NE | 21% |
| Thursday | 55°F | Chance Rain Showers | 12 mph NE | 27% |
| Thursday Night | 45°F | Chance Rain Showers | 6 to 9 mph NE | 31% |
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 Sep 18, 2026.