When to plant in Warwick, RI
USDA Zone 7aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Warwick, Rhode Island — all computed from Warwick's nearest NOAA weather station.
In zone 7a, Warwick supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
The average first fall frost in Warwick is now 5 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
PROVIDENCE T F GREEN AP · 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 Warwick’s own odds, recorded at PROVIDENCE T F GREEN AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 7 | Apr 26 | Apr 14 | Oct 5 | Oct 18 | Nov 1 |
| 32°F | Apr 23 | Apr 11 | Apr 1 | Oct 16 | Oct 30 | Nov 12 |
| 28°F | Apr 11 | Apr 1 | Mar 18 | Oct 29 | Nov 9 | Nov 26 |
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 Warwick, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 19 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.
Warwick planting FAQ
When is the last spring frost in Warwick, RI?
Plan for the last spring frost in Warwick around April 11 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Warwick, RI?
Expect Warwick's first fall frost near October 30 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Warwick in?
Warwick is in USDA hardiness zone 7a. In zone 7a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Warwick?
Warwick has about 202 frost-free days — a moderate growing season — between the average last spring frost (April 11) and first fall frost (October 30).
When should I plant tomatoes in Warwick?
For Warwick, sow tomatoes indoors about February 14–February 28 and move the seedlings out around April 18, after the last spring frost.
Never miss a window in Warwick
An email when it’s time to start seeds, transplant, and sow — timed to Warwick’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Cranston · 9 km
- East Providence · 12 km
- Providence · 13 km
- Pawtucket · 19 km
- Central Falls · 21 km
- Somerset · 22 km
- Newport East · 24 km
- Valley Falls · 25 km
Frost dates recorded at PROVIDENCE T F GREEN AP, 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 Warwick, RI — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00014765. Retrieved from https://blissgarden.com/rhode-island/warwick.