Laconia, NH 03894 Frost Dates
Laconia, NH: when does the frost end?
The last spring frost here typically falls around 04/30, about 245 days from today. Fall's first freeze usually shows up around 10/18, roughly 170 days after the last spring frost.
Zone 5b (-15 to -10°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Laconia, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Laconia's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/30 isn't a guarantee
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/13 and only about 1 year in 10 sees frost after that.
Laconia against the rest of the dataset
About 170 days separate Laconia's last and first frost, putting it 28,932 of 40,283 ZIP codes nationally. Within NH, it ranks 22 of 260.
Learn more
Before leaning on 03894's figures: zone vs. frost date explains why Zone 5b and Laconia's frost date answer different questions, while the frost range explains how to read the range around Laconia's dates instead of trusting one.