Groton, MA Weather & Growing Conditions
Today
84°F
Sunny
Sunny, with a high near 84. West wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Sunny | 5 mph W | 0% |
| Tonight | 58°F | Mostly Clear | 1 to 5 mph SW | 0% |
| Wednesday | 84°F | Partly Sunny | 0 to 6 mph W | 1% |
| Wednesday Night | 64°F | Partly Cloudy | 5 mph SW | 8% |
| Thursday | 87°F | Mostly Sunny then Slight Chance Rain Showers | 2 to 7 mph SW | 23% |
| Thursday Night | 69°F | Chance Rain Showers then Partly Cloudy | 2 to 6 mph SW | 29% |
| Friday | 88°F | Mostly Sunny then Slight Chance Rain Showers | 2 to 7 mph SW | 19% |
| Friday Night | 68°F | Chance Rain Showers then Partly Cloudy | 2 to 6 mph W | 25% |
| Saturday | 86°F | Mostly Sunny then Chance Rain Showers | 2 to 6 mph W | 30% |
| Saturday Night | 67°F | Chance Rain Showers then Mostly Cloudy | 3 mph W | 41% |
| Sunday | 87°F | Sunny | 2 to 7 mph W | 10% |
| Sunday Night | 67°F | Mostly Clear | 2 to 7 mph SW | 12% |
| Monday | 88°F | Sunny | 2 to 9 mph W | 8% |
| Monday Night | 66°F | Mostly Clear | 5 to 8 mph W | 10% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Groton, MA
Last spring frost
Apr 29
First fall frost
Oct 8
Growing season
162 days
Hardiness zone
6a
Explore more for Groton, MA: full frost dates · planting calendar · Massachusetts frost dates
Climate data from the nearest NOAA station, Nashua Cwsu, Nh (9.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.