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Frost dates for Nashua, New Hampshire

In a typical year, Nashua’s last spring frost lands around Apr 30 and the first fall frost around Oct 12, a growing season of about 165 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 6a.

Right now the typical frost season has arrived; planting waits for spring.

Last spring frost and first fall frost odds for Nashua, New Hampshire
OddsLast spring frostFirst fall frost
10 percentApr 18Sep 30
50 percentApr 30Oct 12
90 percentMay 11Oct 28

A 10 percent year is an early year, a 90 percent year a late one. Frost-sensitive planting usually waits for the 90 percent side of the last-frost band.

Soil in Nashua is typically around 49°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.

Plantable now in Nashua

Timing comes from the same temperature engine the app uses, run against Nashua’s normals for today.

See the full what-to-plant lookup

Common questions

When is the last frost in Nashua, New Hampshire?

Nashua’s last spring frost falls around April 30 in a typical year. One year in ten it is done by April 18, and one year in ten frost holds on until May 11. Frost-sensitive planting usually waits for the late side of that band.

When is the first fall frost in Nashua?

The first fall frost arrives around October 12 in a typical year, as early as September 30 in an early year and as late as October 28 in a late one.

How long is the growing season in Nashua?

About 165 days, counted between the typical last spring frost and the typical first fall frost.

What USDA zone is Nashua in?

Nashua is in USDA hardiness zone 6a under the 2023 USDA Plant Hardiness Zone Map.

Dates come from 30-year NOAA climate normals for the nearest reporting station. They describe odds, not a forecast.

Nearby cities

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