Laconia, NH 03836 Frost Dates
Laconia, NH: when does the frost end?
Typically, the last spring freeze lands around 05/16, roughly 261 days out. Fall's first freeze usually shows up around 09/26, roughly 129 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Laconia in Zone 5a (-20 to -15°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 4 weeks until Laconia's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Laconia's last frost
05/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/03 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/30 and only about 1 year in 10 sees frost after that.
Laconia against the rest of the dataset
Laconia's growing season runs about 129 days, ranking 38,434 of 40,283 US ZIP codes measured here, longest to shortest. Within NH, it ranks 226 of 260.
Learn more
Before leaning on 03836's figures: local microclimates explains what one yard in Laconia can differ from the 03836 normal, while zone vs. frost date explains why Zone 5a and Laconia's frost date answer different questions.