When to plant in Meriden, CT
USDA Zone 6bMeriden, Connecticut frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
In zone 6b, Meriden gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
MERIDEN MARKHAM MUNI 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 Meriden’s own odds, recorded at MERIDEN MARKHAM MUNI AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 21 | May 7 | Apr 24 | Sep 26 | Oct 6 | Oct 19 |
| 32°F | May 9 | Apr 26 | Apr 11 | Oct 4 | Oct 16 | Nov 1 |
| 28°F | Apr 28 | Apr 10 | Mar 30 | Oct 14 | Oct 30 | Nov 12 |
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 Meriden, 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.
Meriden planting FAQ
When is the last spring frost in Meriden, CT?
On average, the last spring frost in Meriden is around April 26 (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 Meriden, CT?
In Meriden, the first 32°F freeze of fall lands around October 16 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Meriden in?
Meriden 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 Meriden?
Meriden has about 173 frost-free days — a moderate growing season — between the average last spring frost (April 26) and first fall frost (October 16).
When should I plant tomatoes in Meriden?
For Meriden, sow tomatoes indoors about March 1–March 15 and move the seedlings out around May 3, after the last spring frost.
Never miss a window in Meriden
An email when it’s time to start seeds, transplant, and sow — timed to Meriden’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Wallingford Center · 10 km
- Middletown · 12 km
- New Britain · 16 km
- Newington · 18 km
- North Haven · 18 km
- Bristol · 20 km
- Waterbury · 20 km
- Wethersfield · 21 km
Frost dates recorded at MERIDEN MARKHAM MUNI AP, 4 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 Meriden, CT — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00054788. Retrieved from https://blissgarden.com/connecticut/meriden.