Claremont, NH 03746 Frost Dates
Claremont, NH: when does the frost end?
Typically, the last spring freeze lands around 05/14, roughly 259 days out. Fall's first freeze usually shows up around 10/01, roughly 140 days after the last spring frost.
Claremont sits in USDA Zone 5a (-20 to -15°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 5 weeks until Claremont's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/29 and only about 1 year in 10 sees frost after that.
Claremont against the rest of the dataset
Claremont's growing season runs about 140 days, ranking 37,032 of 40,283 US ZIP codes measured here, longest to shortest. Within NH, it ranks 181 of 260.
Learn more
Before leaning on 03746's figures: the frost range explains how to read the range around Claremont's dates instead of trusting one, while local microclimates explains what one yard in Claremont can differ from the 03746 normal.