Nashua, NH 03049 Frost Dates
When can you plant in Nashua, NH?
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.
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
04/29 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
At roughly 162 frost-free days, Nashua places 31,577 of 40,283 ZIP codes in this dataset. Within NH, it ranks 39 of 260.
Learn more
local microclimates covers what one yard in Nashua can differ from the 03049 normal. zone vs. frost date covers why Zone 6a and Nashua's frost date answer different questions.