Franklin, NH 03216 Frost Dates
Franklin, 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 09/29, roughly 138 days after the last spring frost.
Zone 5b (-15 to -10°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 Franklin, not a forecast for this year.
Stretching the season past the first frost
With roughly 5 weeks until Franklin's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/14 isn't a guarantee
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 05/28 and only about 1 year in 10 sees frost after that.
Franklin against the rest of the dataset
At roughly 138 frost-free days, Franklin places 37,364 of 40,283 ZIP codes in this dataset. Within NH, it ranks 204 of 260.
Learn more
Before leaning on 03216's figures: local microclimates explains what one yard in Franklin can differ from the 03216 normal, while zone vs. frost date explains why Zone 5b and Franklin's frost date answer different questions.