Laconia, NH 03215 Frost Dates
When can you plant in Laconia, NH?
The last spring frost here typically falls around 05/15, about 260 days from today. The first fall frost typically arrives around 09/28, about 134 frost-free days later.
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.
What to do before the first frost
About 4 weeks of growing season left in Laconia before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/15 isn't a guarantee
05/15 is the middle of 30 years of NOAA records, not a promise. Plant by 05/03 and you're betting against frost in roughly 9 years out of 10. 05/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Laconia compares
About 134 days separate Laconia's last and first frost, putting it 37,951 of 40,283 ZIP codes nationally. Within NH, it ranks 216 of 260.
Learn more
local microclimates covers what one yard in Laconia can differ from the 03215 normal. zone vs. frost date covers why Zone 5a and Laconia's frost date answer different questions.