South Lancaster, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Lancaster, a community in Worcester County, Massachusetts.
This Afternoon
72°F
Partly Sunny
Partly sunny. High near 72, with temperatures falling to around 62 in the afternoon. Southwest wind around 6 mph.
7-day forecast for South Lancaster
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Partly Sunny | 6 mph SW | 10% |
| Tonight | 51°F | Mostly Cloudy | 5 mph SW | 3% |
| Wednesday | 74°F | Mostly Sunny | 5 to 9 mph SW | 4% |
| Wednesday Night | 54°F | Partly Cloudy | 7 mph SW | 2% |
| Thursday | 73°F | Chance Light Rain | 7 to 12 mph SW | 27% |
| Thursday Night | 61°F | Light Rain Likely | 3 to 7 mph SW | 59% |
| Friday | 69°F | Rain | 5 mph S | 82% |
| Friday Night | 54°F | Rain | 3 mph E | 83% |
| Saturday | 63°F | Light Rain Likely | 7 mph NW | 69% |
| Saturday Night | 42°F | Chance Light Rain | 6 mph NW | 45% |
| Sunday | 59°F | Slight Chance Light Rain then Mostly Sunny | 8 mph W | 24% |
| Sunday Night | 36°F | Partly Cloudy | 5 mph W | 9% |
| Monday | 56°F | Slight Chance Light Rain | 6 to 10 mph W | 21% |
| Monday Night | 35°F | Slight Chance Light Rain | 7 mph W | 21% |
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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Brookfield
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Fitchburg
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Hopedale
Leominster
Lunenburg
Milford
North Brookfield
Northborough
Oxford
Petersham
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South Ashburnham
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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 Nov 3, 2026.