When to plant in Naugatuck, CT
USDA Zone 6bNaugatuck, Connecticut frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
Heads up: the nearest complete-normals station is about 15 km from Naugatuck, so your yard's frost dates can differ — a low spot or a paved city center can shift them by a week. In zone 6b, Naugatuck gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
The average first fall frost in Naugatuck is now 10 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
MT CARMEL · 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 Naugatuck’s own odds, recorded at MT CARMEL.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 16 | May 1 | Apr 18 | Oct 2 | Oct 15 | Oct 30 |
| 32°F | May 3 | Apr 18 | Apr 5 | Oct 11 | Oct 26 | Nov 9 |
| 28°F | Apr 19 | Apr 5 | Mar 23 | Oct 22 | Nov 6 | Nov 22 |
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 Naugatuck, 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.
Naugatuck planting FAQ
When is the last spring frost in Naugatuck, CT?
Naugatuck's average last spring frost falls near April 18 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Naugatuck, CT?
Expect Naugatuck's first fall frost near October 26 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Naugatuck in?
Naugatuck 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 Naugatuck?
Naugatuck has about 191 frost-free days — a moderate growing season — between the average last spring frost (April 18) and first fall frost (October 26).
When should I plant tomatoes in Naugatuck?
For Naugatuck, sow tomatoes indoors about February 21–March 7 and move the seedlings out around April 25, after the last spring frost.
Never miss a window in Naugatuck
An email when it’s time to start seeds, transplant, and sow — timed to Naugatuck’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Waterbury · 8 km
- Ansonia · 16 km
- Derby · 18 km
- Wallingford Center · 20 km
- North Haven · 20 km
- Shelton · 22 km
- Meriden · 22 km
- New Haven · 22 km
Frost dates recorded at MT CARMEL, 15 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 Naugatuck, CT — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00065077. Retrieved from https://blissgarden.com/connecticut/naugatuck.