Laconia, NH 03814 Frost Dates
Laconia, NH: when does the frost end?
Around 05/16 is the usual last spring frost, about 261 days away. Fall's first freeze usually shows up around 09/26, roughly 129 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 Laconia, not a forecast for this year.
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
About 129 days separate Laconia's last and first frost, putting it 38,432 of 40,283 ZIP codes nationally. Within NH, it ranks 224 of 260.
Learn more
Before leaning on 03814's figures: local microclimates explains what one yard in Laconia can differ from the 03814 normal, while zone vs. frost date explains why Zone 5a and Laconia's frost date answer different questions.