Laconia, NH 03896 Frost Dates
03896, near Laconia, NH: the frost window
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
Laconia's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
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
At roughly 170 frost-free days, Laconia places 28,933 of 40,283 ZIP codes in this dataset. Within NH, it ranks 23 of 260.
Learn more
Two guides worth reading on 03896: 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 03896 normal.