Laconia, NH 03256 Frost Dates
Laconia, NH: when does the frost end?
Typically, the last spring freeze lands around 05/07, roughly 252 days out. Fall's first freeze usually shows up around 10/03, roughly 148 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
With roughly 5 weeks until Laconia's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/27 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/20 and only about 1 year in 10 sees frost after that.
Laconia against the rest of the dataset
About 148 days separate Laconia's last and first frost, putting it 35,686 of 40,283 ZIP codes nationally. Within NH, it ranks 140 of 260.
Learn more
Before leaning on 03256's figures: local microclimates explains what one yard in Laconia can differ from the 03256 normal, while zone vs. frost date explains why Zone 5b and Laconia's frost date answer different questions.