Marlborough, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marlborough, a city in Middlesex County, Massachusetts.
Today
77°F
Sunny
Sunny. High near 77, with temperatures falling to around 67 in the afternoon. Southwest wind 8 to 12 mph.
7-day forecast for Marlborough
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Sunny | 8 to 12 mph SW | 3% |
| Tonight | 57°F | Partly Cloudy | 8 mph SW | 2% |
| Thursday | 73°F | Mostly Cloudy | 7 to 12 mph SW | 11% |
| Thursday Night | 60°F | Chance Light Rain | 5 to 8 mph SW | 46% |
| Friday | 70°F | Light Rain | 5 mph S | 88% |
| Friday Night | 55°F | Light Rain | 3 mph SW | 90% |
| Saturday | 64°F | Light Rain Likely | 6 mph N | 61% |
| Saturday Night | 44°F | Chance Light Rain | 6 mph NW | 25% |
| Sunday | 57°F | Slight Chance Light Rain then Mostly Sunny | 8 mph W | 22% |
| Sunday Night | 37°F | Partly Cloudy | 5 mph W | 6% |
| Monday | 54°F | Sunny then Slight Chance Light Rain | 6 to 10 mph W | 15% |
| Monday Night | 35°F | Partly Cloudy | 6 mph W | 13% |
| Tuesday | 57°F | Mostly Sunny | 6 to 9 mph SW | 6% |
| Tuesday Night | 35°F | Mostly Clear | 7 mph W | 6% |
Forecast source: National Weather Service (api.weather.gov) for Marlborough (42.350, -71.547). Updated through the day.
Growing snapshot for Marlborough
Last spring frost
May 2
First fall frost
Oct 6
Growing season
156 days
Hardiness zone
6b
More local growing data for Marlborough: nearby ZIP 01752 weather · frost dates · planting calendar · Massachusetts frost dates
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Climate data from the nearest NOAA station, Maynard 2, Ma (7.7 mi from Marlborough). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.