Laconia, NH 03818 Frost Dates
Laconia, NH: when does the frost end?
Around 05/07 is the usual last spring frost, about 252 days away. Fall's first freeze usually shows up around 10/05, roughly 150 days after the last spring frost.
Laconia sits in USDA Zone 5a (-20 to -15°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 05/19 and only about 1 year in 10 sees frost after that.
Laconia against the rest of the dataset
At roughly 150 frost-free days, Laconia places 35,252 of 40,283 ZIP codes in this dataset. Within NH, it ranks 123 of 260.
Learn more
Before leaning on 03818's figures: the frost range explains how to read the range around Laconia's dates instead of trusting one, while local microclimates explains what one yard in Laconia can differ from the 03818 normal.