Nashua, NH 03062 Frost Dates
Nashua, NH: when does the frost end?
The last spring frost here typically falls around 04/29, about 244 days from today. Fall's first freeze usually shows up around 10/08, roughly 162 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Nashua in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 6 weeks until Nashua'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
04/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/16 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/11 and only about 1 year in 10 sees frost after that.
Nashua against the rest of the dataset
Nashua's growing season runs about 162 days, ranking 31,579 of 40,283 US ZIP codes measured here, longest to shortest. Within NH, it ranks 41 of 260.
Learn more
Before leaning on 03062's figures: zone vs. frost date explains why Zone 6a and Nashua's frost date answer different questions, while the frost range explains how to read the range around Nashua's dates instead of trusting one.