Fitchburg, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fitchburg, a city in Worcester County, Massachusetts.
This Afternoon
70°F
Mostly Cloudy
Mostly cloudy. High near 70, with temperatures falling to around 61 in the afternoon. Southwest wind around 6 mph.
7-day forecast for Fitchburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Mostly Cloudy | 6 mph SW | 10% |
| Tonight | 50°F | Mostly Cloudy | 6 mph SW | 3% |
| Wednesday | 73°F | Mostly Sunny | 6 to 9 mph SW | 4% |
| Wednesday Night | 53°F | Partly Cloudy | 9 mph SW | 2% |
| Thursday | 71°F | Chance Light Rain | 8 to 12 mph SW | 38% |
| Thursday Night | 60°F | Light Rain Likely | 3 to 8 mph SW | 59% |
| Friday | 67°F | Rain | 5 mph S | 80% |
| Friday Night | 53°F | Rain | 3 mph N | 80% |
| Saturday | 61°F | Light Rain Likely | 6 mph NW | 68% |
| Saturday Night | 42°F | Chance Light Rain | 7 mph NW | 45% |
| Sunday | 57°F | Slight Chance Light Rain then Mostly Sunny | 8 mph W | 24% |
| Sunday Night | 37°F | Partly Cloudy | 6 mph W | 10% |
| Monday | 55°F | Slight Chance Light Rain | 7 to 12 mph W | 21% |
| Monday Night | 36°F | Slight Chance Light Rain | 8 mph W | 20% |
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 Nov 3, 2026.