South Lancaster, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Lancaster, a community in Worcester County, Massachusetts.
Today
66°F
Mostly Sunny
Mostly sunny, with a high near 66. East wind 0 to 3 mph.
7-day forecast for South Lancaster
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 66°F | Mostly Sunny | 0 to 3 mph E | 0% |
| Tonight | 46°F | Partly Cloudy | 3 mph S | 0% |
| Sunday | 60°F | Mostly Cloudy then Slight Chance Rain Showers | 1 to 6 mph SE | 85% |
| Sunday Night | 48°F | Rain Showers | 3 to 7 mph NE | 82% |
| Monday | 65°F | Partly Sunny | 8 mph N | 9% |
| Monday Night | 44°F | Mostly Cloudy | 5 mph N | 1% |
| Tuesday | 61°F | Partly Sunny | 8 mph NE | 2% |
| Tuesday Night | 43°F | Mostly Cloudy | 2 to 7 mph NE | 2% |
| Wednesday | 62°F | Partly Sunny | 8 to 13 mph NE | 2% |
| Wednesday Night | 43°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 10 mph NE | 19% |
| Thursday | 60°F | Chance Rain Showers | 9 to 13 mph NE | 32% |
| Thursday Night | 44°F | Chance Rain Showers | 9 to 13 mph NE | 36% |
| Friday | 61°F | Chance Rain Showers | 14 mph N | 35% |
| Friday Night | 46°F | Chance Rain Showers | 13 mph N | 35% |
Forecast source: National Weather Service (api.weather.gov) for South Lancaster (42.437, -71.697). Updated through the day.
Growing snapshot for South Lancaster
Last spring frost
Apr 29
First fall frost
Oct 11
Growing season
164 days
Hardiness zone
6b
More local growing data for South Lancaster: nearby ZIP 01561 weather · frost dates · planting calendar · Massachusetts frost dates
Nearby towns & communities
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Baldwinville
Barre
Brookfield
Clinton
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Devens
East Brookfield
East Douglas
Fiskdale
Fitchburg
Gardner
Hopedale
Leominster
Lunenburg
Milford
North Brookfield
Northborough
Oxford
Petersham
Rutland
South Ashburnham
Southbridge Town
Spencer
Sturbridge
Upton
Warren
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West Brookfield
West Warren
Climate data from the nearest NOAA station, Fitchburg Muni Ap, Ma (8.1 mi from South Lancaster). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.