Claremont, NH 03752 Frost Dates
When can you plant in Claremont, NH?
Around 05/02 is the usual last spring frost, about 247 days away. The first fall frost typically arrives around 10/09, about 158 frost-free days later.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Claremont, not a forecast for this year.
What to do before the first frost
About 6 weeks of growing season left in Claremont before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/02 isn't a guarantee
05/02 is the middle of 30 years of NOAA records, not a promise. Plant by 04/21 and you're betting against frost in roughly 9 years out of 10. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Claremont compares
Claremont's growing season runs about 158 days, ranking 32,934 of 40,283 US ZIP codes measured here, longest to shortest. Within NH, it ranks 82 of 260.
Learn more
local microclimates covers what one yard in Claremont can differ from the 03752 normal. zone vs. frost date covers why Zone 6a and Claremont's frost date answer different questions.