Laconia, NH 03816 Frost Dates
03816, near Laconia, NH: the frost window
The last spring frost here typically falls around 05/06, about 251 days from today. Fall's first freeze usually shows up around 10/06, roughly 151 days after the last spring frost.
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.
Stretching the season past the first frost
Laconia's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
05/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/26 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/19 and only about 1 year in 10 sees frost after that.
Laconia against the rest of the dataset
About 151 days separate Laconia's last and first frost, putting it 34,958 of 40,283 ZIP codes nationally. Within NH, it ranks 114 of 260.
Learn more
Two guides worth reading on 03816: the frost range, on how to read the range around Laconia's dates instead of trusting one, and local microclimates, on what one yard in Laconia can differ from the 03816 normal.