South Lancaster, MA Weather & Growing Conditions
Tonight
51°F
Mostly Cloudy
Mostly cloudy, with a low around 51. Southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Mostly Cloudy | 5 mph SW | 3% |
| Wednesday | 75°F | Mostly Sunny | 5 to 9 mph SW | 4% |
| Wednesday Night | 55°F | Partly Cloudy | 7 mph SW | 2% |
| Thursday | 74°F | Mostly Cloudy then Chance Light Rain | 6 to 10 mph SW | 25% |
| Thursday Night | 61°F | Light Rain Likely | 2 to 7 mph SW | 59% |
| Friday | 69°F | Rain | 1 to 5 mph S | 83% |
| Friday Night | 54°F | Rain | 3 mph E | 83% |
| Saturday | 64°F | Light Rain Likely | 6 mph NW | 69% |
| Saturday Night | 42°F | Chance Light Rain | 5 mph NW | 45% |
| Sunday | 60°F | Slight Chance Light Rain then Mostly Sunny | 7 mph W | 24% |
| Sunday Night | 36°F | Partly Cloudy | 3 mph W | 10% |
| Monday | 57°F | Slight Chance Light Rain | 3 to 10 mph W | 21% |
| Monday Night | 34°F | Slight Chance Light Rain | 7 mph W | 21% |
| Tuesday | 58°F | Mostly Sunny | 7 to 12 mph SW | 11% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for South Lancaster, MA
Last spring frost
Apr 29
First fall frost
Oct 11
Growing season
164 days
Hardiness zone
6b
Explore more for South Lancaster, MA: full frost dates · planting calendar · Massachusetts frost dates
Climate data from the nearest NOAA station, Fitchburg Muni Ap, Ma (8.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.