Laconia, NH 03253 Frost Dates
Frost dates for Laconia, NH, ZIP 03253
Typically, the last spring freeze lands around 04/28, roughly 243 days out. The first fall frost typically arrives around 10/16, about 171 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
Zone 5b around Laconia has about 7 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 04/28 isn't a guarantee
04/28 is the middle of 30 years of NOAA records, not a promise. Plant by 04/15 and you're betting against frost in roughly 9 years out of 10. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Laconia compares
At roughly 171 frost-free days, Laconia places 28,608 of 40,283 ZIP codes in this dataset. Within NH, it ranks 8 of 260.
Learn more
the frost range explains how to read the range around Laconia's dates instead of trusting one, and local microclimates explains what one yard in Laconia can differ from the 03253 normal.