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Frost dates for Concord, New Hampshire

In a typical year, Concord’s last spring frost lands around May 14 and the first fall frost around Sep 29, a growing season of about 138 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 5b.

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

Last spring frost and first fall frost odds for Concord, New Hampshire
OddsLast spring frostFirst fall frost
10 percentApr 30Sep 14
50 percentMay 14Sep 29
90 percentMay 28Oct 13

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 Concord is typically around 46°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.

See what is plantable in your ZIP with the what-to-plant lookup.

Common questions

When is the last frost in Concord, New Hampshire?

Concord’s last spring frost falls around May 14 in a typical year. One year in ten it is done by April 30, and one year in ten frost holds on until May 28. Frost-sensitive planting usually waits for the late side of that band.

When is the first fall frost in Concord?

The first fall frost arrives around September 29 in a typical year, as early as September 14 in an early year and as late as October 13 in a late one.

How long is the growing season in Concord?

About 138 days, counted between the typical last spring frost and the typical first fall frost.

What USDA zone is Concord in?

Concord is in USDA hardiness zone 5b 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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