Laconia, NH 03299 Frost Dates
When can you plant in Laconia, NH?
Typically, the last spring freeze lands around 04/30, roughly 245 days out. The first fall frost typically arrives around 10/18, about 170 frost-free days later.
Laconia sits in USDA Zone 5b (-15 to -10°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 7 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 04/30 isn't a guarantee
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/19 and you're betting against frost in roughly 9 years out of 10. 05/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Laconia compares
At roughly 170 frost-free days, Laconia places 28,928 of 40,283 ZIP codes in this dataset. Within NH, it ranks 18 of 260.
Learn more
the frost range covers how to read the range around Laconia's dates instead of trusting one. local microclimates covers what one yard in Laconia can differ from the 03299 normal.