Somerville, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Somerville, a city in Middlesex County, Massachusetts.
This Afternoon
73°F
Partly Sunny
Partly sunny. High near 73, with temperatures falling to around 66 in the afternoon. Southwest wind around 6 mph.
7-day forecast for Somerville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Partly Sunny | 6 mph SW | 3% |
| Tonight | 54°F | Mostly Cloudy | 5 mph SW | 4% |
| Wednesday | 77°F | Mostly Sunny | 5 to 10 mph SW | 5% |
| Wednesday Night | 56°F | Partly Cloudy | 8 mph SW | 3% |
| Thursday | 75°F | Mostly Cloudy | 6 to 12 mph SW | 14% |
| Thursday Night | 62°F | Mostly Cloudy then Chance Light Rain | 5 to 9 mph SW | 54% |
| Friday | 70°F | Rain | 7 mph S | 84% |
| Friday Night | 56°F | Rain | 5 mph S | 84% |
| Saturday | 64°F | Light Rain | 8 mph NW | 75% |
| Saturday Night | 46°F | Chance Light Rain | 6 mph NW | 49% |
| Sunday | 60°F | Chance Light Rain | 6 to 9 mph W | 25% |
| Sunday Night | 40°F | Partly Cloudy | 6 mph W | 10% |
| Monday | 58°F | Slight Chance Light Rain | 7 to 12 mph W | 20% |
| Monday Night | 39°F | Slight Chance Light Rain | 8 mph W | 21% |
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 Nov 3, 2026.