Fitchburg, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fitchburg, a city in Worcester County, Massachusetts.
This Afternoon
79°F
Sunny
Sunny, with a high near 79. Northwest wind around 9 mph, with gusts as high as 22 mph.
7-day forecast for Fitchburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Sunny | 9 mph NW | 0% |
| Tonight | 45°F | Partly Cloudy | 7 mph N | 0% |
| Saturday | 65°F | Sunny | 1 to 5 mph NE | 0% |
| Saturday Night | 43°F | Partly Cloudy | 2 mph S | 2% |
| Sunday | 60°F | Rain Showers | 5 mph S | 86% |
| Sunday Night | 50°F | Rain Showers | 2 to 7 mph NE | 84% |
| Monday | 62°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 8 mph N | 17% |
| Monday Night | 46°F | Partly Cloudy | 2 to 7 mph N | 5% |
| Tuesday | 58°F | Partly Sunny | 9 mph NE | 5% |
| Tuesday Night | 44°F | Mostly Cloudy | 3 to 9 mph NE | 2% |
| Wednesday | 57°F | Partly Sunny | 9 to 13 mph NE | 5% |
| Wednesday Night | 45°F | Mostly Cloudy then Slight Chance Rain Showers | 9 mph NE | 20% |
| Thursday | 57°F | Chance Rain Showers | 10 mph NE | 27% |
| Thursday Night | 47°F | Chance Rain Showers | 6 to 9 mph NE | 32% |
Forecast source: National Weather Service (api.weather.gov) for Fitchburg (42.602, -71.816). Updated through the day.
Growing snapshot for Fitchburg
Last spring frost
May 1
First fall frost
Oct 9
Growing season
162 days
Hardiness zone
6a
More local growing data for Fitchburg: nearby ZIP 01420 weather · frost dates · planting calendar · Massachusetts frost dates
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Climate data from the nearest NOAA station, Fitchburg Coop, Ma (2.3 mi from Fitchburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.