Nashua, NH 01827 Frost Dates
Frost dates for Nashua, NH, ZIP 01827
The last spring frost here typically falls around 04/29, about 244 days from today. The first fall frost typically arrives around 10/08, about 162 frost-free days later.
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.
What to do before the first frost
Zone 6a around Nashua has about 6 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
04/29 is the middle of 30 years of NOAA records, not a promise. Plant by 04/16 and you're betting against frost in roughly 9 years out of 10. 05/11 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Nashua compares
Nashua's growing season runs about 162 days, ranking 31,576 of 40,283 US ZIP codes measured here, longest to shortest. Within NH, it ranks 38 of 260.
Learn more
local microclimates explains what one yard in Nashua can differ from the 01827 normal, and zone vs. frost date explains why Zone 6a and Nashua's frost date answer different questions.