Claremont, NH 03754 Frost Dates
Frost dates for Claremont, NH, ZIP 03754
Around 05/14 is the usual last spring frost, about 259 days away. The first fall frost typically arrives around 10/01, about 140 frost-free days later.
The USDA Plant Hardiness Zone Map puts Claremont in Zone 5a (-20 to -15°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 5a around Claremont has about 5 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
05/14 is the middle of 30 years of NOAA records, not a promise. Plant by 04/30 and you're betting against frost in roughly 9 years out of 10. 05/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Claremont compares
Claremont's growing season runs about 140 days, ranking 37,034 of 40,283 US ZIP codes measured here, longest to shortest. Within NH, it ranks 183 of 260.
Learn more
the frost range explains how to read the range around Claremont's dates instead of trusting one, and local microclimates explains what one yard in Claremont can differ from the 03754 normal.