When to plant in Claremont, NH
USDA Zone 5bEverything below — frost dates, hardiness zone, and what to plant when in Claremont, New Hampshire — is derived from the closest NOAA station with complete climate normals.
In zone 5b, Claremont gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
The average first fall frost in Claremont is now 6 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
NEWPORT · 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 Claremont’s own odds, recorded at NEWPORT.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Jun 8 | May 27 | May 12 | Sep 6 | Sep 21 | Oct 2 |
| 32°F | May 29 | May 14 | Apr 30 | Sep 19 | Oct 1 | Oct 12 |
| 28°F | May 17 | May 1 | Apr 19 | Oct 1 | Oct 11 | Oct 28 |
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 Claremont, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 16 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.
Claremont planting FAQ
When is the last spring frost in Claremont, NH?
Plan for the last spring frost in Claremont around May 14 (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 Claremont, NH?
The first fall frost in Claremont typically arrives around October 1 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Claremont in?
Claremont is in USDA hardiness zone 5b. In zone 5b, winters are cold — pick cold-hardy varieties and protect tender crops.
How long is the growing season in Claremont?
Claremont has about 140 frost-free days — a short growing season — between the average last spring frost (May 14) and first fall frost (October 1).
When should I plant tomatoes in Claremont?
For Claremont, sow tomatoes indoors about March 19–April 2 and move the seedlings out around May 21, after the last spring frost.
Never miss a window in Claremont
An email when it’s time to start seeds, transplant, and sow — timed to Claremont’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Lebanon · 28 km
- Keene · 48 km
- Rutland · 58 km
- Concord · 65 km
- Laconia · 72 km
- Manchester · 85 km
- Greenfield · 88 km
- Gardner · 94 km
Frost dates recorded at NEWPORT, 12 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 Claremont, NH — Frost Dates & Zone 5b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00275868. Retrieved from https://blissgarden.com/new-hampshire/claremont.