Claremont, NH 03773 Frost Dates
Claremont, NH: when does the frost end?
The last spring frost here typically falls around 05/14, about 259 days from today. Fall's first freeze usually shows up around 10/01, roughly 140 days after the last spring frost.
Zone 5a (-20 to -15°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.
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
About 140 days separate Claremont's last and first frost, putting it 37,035 of 40,283 ZIP codes nationally. Within NH, it ranks 184 of 260.
Learn more
Before leaning on 03773'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 03773 normal.