Nashua, NH 01463 Frost Dates
Frost dates for Nashua, NH, ZIP 01463
Around 04/29 is the usual last spring frost, about 244 days away. 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.
The actual range around Nashua's last frost
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 31,575 of 40,283 US ZIP codes measured here, longest to shortest. Within NH, it ranks 37 of 260.
Learn more
zone vs. frost date explains why Zone 6a and Nashua's frost date answer different questions, and the frost range explains how to read the range around Nashua's dates instead of trusting one.