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
83°F
Sunny
Sunny, with a high near 83. West wind around 6 mph.
7-day forecast for South Lancaster
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 6 mph W | 0% |
| Tonight | 60°F | Partly Cloudy | 5 mph SW | 1% |
| Wednesday | 83°F | Mostly Sunny | 1 to 6 mph W | 1% |
| Wednesday Night | 65°F | Partly Cloudy | 5 mph SW | 8% |
| Thursday | 86°F | Mostly Sunny then Chance Rain Showers | 3 to 7 mph SW | 30% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 6 mph SW | 39% |
| Friday | 88°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 8 mph SW | 19% |
| Friday Night | 69°F | Chance Rain Showers | 2 to 6 mph W | 26% |
| Saturday | 86°F | Mostly Sunny then Chance Rain Showers | 6 mph W | 29% |
| Saturday Night | 68°F | Chance Rain Showers then Mostly Cloudy | 5 mph W | 40% |
| Sunday | 86°F | Mostly Sunny | 3 to 7 mph W | 11% |
| Sunday Night | 68°F | Mostly Clear | 6 mph SW | 13% |
| Monday | 87°F | Sunny | 5 to 9 mph W | 9% |
| Monday Night | 67°F | Mostly Clear | 8 mph W | 11% |
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
Athol
Baldwinville
Barre
Brookfield
Clinton
Cordaville
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
Webster
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 Aug 4, 2026.