Laconia, NH 03289 Frost Dates
Laconia, NH: when does the frost end?
The last spring frost here typically falls around 04/30, about 245 days from today. Fall's first freeze usually shows up around 10/18, roughly 170 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Laconia in Zone 5b (-15 to -10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 7 weeks until Laconia's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/30 isn't a guarantee
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/13 and only about 1 year in 10 sees frost after that.
Laconia against the rest of the dataset
At roughly 170 frost-free days, Laconia places 28,926 of 40,283 ZIP codes in this dataset. Within NH, it ranks 16 of 260.
Learn more
Before leaning on 03289's figures: the frost range explains how to read the range around Laconia's dates instead of trusting one, while local microclimates explains what one yard in Laconia can differ from the 03289 normal.