Somerville, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Somerville, a city in Middlesex County, Massachusetts.
This Afternoon
81°F
Mostly Sunny
Mostly sunny, with a high near 81. Northwest wind around 9 mph, with gusts as high as 22 mph.
7-day forecast for Somerville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Mostly Sunny | 9 mph NW | 0% |
| Tonight | 52°F | Partly Cloudy | 6 to 9 mph N | 0% |
| Saturday | 63°F | Sunny | 7 mph NE | 0% |
| Saturday Night | 48°F | Partly Cloudy | 1 to 6 mph S | 1% |
| Sunday | 65°F | Rain Showers Likely | 1 to 7 mph S | 73% |
| Sunday Night | 56°F | Rain Showers | 3 to 9 mph E | 84% |
| Monday | 64°F | Chance Rain Showers then Partly Sunny | 8 to 12 mph NE | 35% |
| Monday Night | 53°F | Partly Cloudy | 3 to 10 mph NE | 7% |
| Tuesday | 61°F | Partly Sunny | 10 to 14 mph NE | 6% |
| Tuesday Night | 52°F | Mostly Cloudy | 8 to 14 mph NE | 3% |
| Wednesday | 62°F | Partly Sunny | 17 mph NE | 6% |
| Wednesday Night | 52°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph NE | 16% |
| Thursday | 61°F | Chance Rain Showers | 14 to 17 mph NE | 29% |
| Thursday Night | 52°F | Chance Rain Showers | 9 to 15 mph NE | 39% |
Forecast source: National Weather Service (api.weather.gov) for Somerville (42.390, -71.101). Updated through the day.
Growing snapshot for Somerville
Last spring frost
Apr 4
First fall frost
Nov 9
Growing season
218 days
Hardiness zone
7a
More local growing data for Somerville: nearby ZIP 02143 weather · frost dates · planting calendar · Massachusetts frost dates
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Climate data from the nearest NOAA station, Boston Logan Intl Ap, Ma (4.6 mi from Somerville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.