Nashua, NH 03063 Frost Dates
When can you plant in Nashua, NH?
Typically, the last spring freeze lands around 04/30, roughly 245 days out. The first fall frost typically arrives around 10/12, about 165 frost-free days later.
Nashua sits in USDA Zone 6a (-10 to -5°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.
What to do before the first frost
About 6 weeks of growing season left in Nashua before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Nashua's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/18 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 165 days, ranking 30,478 of 40,283 US ZIP codes measured here, longest to shortest. Within NH, it ranks 26 of 260.
Learn more
the frost range covers how to read the range around Nashua's dates instead of trusting one. local microclimates covers what one yard in Nashua can differ from the 03063 normal.