Laconia, NH 03241 Frost Dates
Laconia, NH: when does the frost end?
Around 05/20 is the usual last spring frost, about 265 days away. Fall's first freeze usually shows up around 09/27, roughly 128 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 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
05/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/04 and only about 1 year in 10 sees frost after that.
Laconia against the rest of the dataset
At roughly 128 frost-free days, Laconia places 38,526 of 40,283 ZIP codes in this dataset. Within NH, it ranks 239 of 260.
Learn more
Before leaning on 03241's figures: zone vs. frost date explains why Zone 5b and Laconia's frost date answer different questions, while the frost range explains how to read the range around Laconia's dates instead of trusting one.