Fitchburg, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fitchburg, a city in Worcester County, Massachusetts.
Today
81°F
Sunny
Sunny, with a high near 81. West wind around 6 mph.
7-day forecast for Fitchburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Sunny | 6 mph W | 0% |
| Tonight | 59°F | Mostly Clear | 5 mph W | 0% |
| Wednesday | 81°F | Partly Sunny | 2 to 6 mph W | 1% |
| Wednesday Night | 64°F | Partly Cloudy | 5 mph SW | 8% |
| Thursday | 84°F | Mostly Sunny then Chance Rain Showers | 3 to 7 mph SW | 33% |
| Thursday Night | 69°F | Chance Showers And Thunderstorms | 6 mph SW | 44% |
| Friday | 86°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 8 mph W | 22% |
| Friday Night | 67°F | Chance Rain Showers then Partly Cloudy | 6 mph W | 29% |
| Saturday | 83°F | Mostly Sunny then Chance Rain Showers | 6 mph W | 28% |
| Saturday Night | 67°F | Chance Rain Showers then Mostly Cloudy | 5 mph W | 38% |
| Sunday | 85°F | Sunny | 3 to 7 mph W | 10% |
| Sunday Night | 67°F | Mostly Clear | 6 mph SW | 12% |
| Monday | 85°F | Sunny | 5 to 10 mph W | 9% |
| Monday Night | 66°F | Partly Cloudy | 6 to 9 mph W | 10% |
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 Aug 4, 2026.