When to plant in Woonsocket, RI
USDA Zone 6bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Woonsocket, Rhode Island — all computed from Woonsocket's nearest NOAA weather station.
Zone 6b means Woonsocket sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
Frost probability
WOONSOCKET · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Woonsocket’s own odds, recorded at WOONSOCKET.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 19 | May 5 | Apr 23 | Sep 26 | Oct 7 | Oct 23 |
| 32°F | May 6 | Apr 22 | Apr 9 | Oct 5 | Oct 19 | Nov 2 |
| 28°F | Apr 20 | Apr 7 | Mar 28 | Oct 16 | Oct 31 | Nov 14 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Woonsocket, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 25 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Woonsocket planting FAQ
When is the last spring frost in Woonsocket, RI?
On average, the last spring frost in Woonsocket is around April 22 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Woonsocket, RI?
The first fall frost in Woonsocket typically arrives around October 19 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Woonsocket in?
Woonsocket is in USDA hardiness zone 6b. In zone 6b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Woonsocket?
There are roughly 180 frost-free days in Woonsocket (a moderate growing season), running from the average last frost around April 22 to the first fall frost near October 19.
When should I plant tomatoes in Woonsocket?
In Woonsocket, start tomato seeds indoors around February 25–March 11, then transplant seedlings outdoors around April 29 once the danger of frost has passed.
Never miss a window in Woonsocket
An email when it’s time to start seeds, transplant, and sow — timed to Woonsocket’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Franklin Town · 12 km
- Valley Falls · 13 km
- North Attleborough Town · 14 km
- Central Falls · 15 km
- Milford · 17 km
- Pawtucket · 18 km
- Attleboro · 19 km
- Providence · 21 km
Frost dates recorded at WOONSOCKET, 2 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Woonsocket, RI — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00379423. Retrieved from https://blissgarden.com/rhode-island/woonsocket.