Arlington, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Arlington, a community in Middlesex County, Massachusetts.
Tonight
48°F
Partly Cloudy
Partly cloudy, with a low around 48. North wind 6 to 9 mph.
7-day forecast for Arlington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Partly Cloudy | 6 to 9 mph N | 0% |
| Saturday | 64°F | Sunny | 6 mph NE | 0% |
| Saturday Night | 45°F | Partly Cloudy | 2 to 6 mph S | 1% |
| Sunday | 64°F | Rain Showers Likely | 2 to 7 mph SE | 73% |
| Sunday Night | 55°F | Rain Showers | 3 to 9 mph E | 84% |
| Monday | 64°F | Chance Rain Showers then Partly Sunny | 7 to 10 mph NE | 33% |
| Monday Night | 52°F | Partly Cloudy | 3 to 9 mph NE | 6% |
| Tuesday | 60°F | Partly Sunny | 12 mph NE | 5% |
| Tuesday Night | 51°F | Mostly Cloudy | 7 to 10 mph NE | 3% |
| Wednesday | 60°F | Partly Sunny | 10 to 15 mph NE | 6% |
| Wednesday Night | 50°F | Mostly Cloudy then Slight Chance Rain Showers | 8 to 12 mph NE | 17% |
| Thursday | 59°F | Chance Rain Showers | 10 to 14 mph NE | 29% |
| Thursday Night | 51°F | Chance Rain Showers | 8 to 12 mph NE | 38% |
| Friday | 63°F | Chance Rain Showers | 12 mph N | 37% |
Forecast source: National Weather Service (api.weather.gov) for Arlington (42.419, -71.164). Updated through the day.
Growing snapshot for Arlington
Last spring frost
Apr 25
First fall frost
Oct 17
Growing season
174 days
Hardiness zone
6b
More local growing data for Arlington: nearby ZIP 02474 weather · frost dates · planting calendar · Massachusetts frost dates
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Watertown Town
Climate data from the nearest NOAA station, Reading, Ma (7.3 mi from Arlington). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.