Skip to content

Frost dates for Dickinson, North Dakota

In a typical year, Dickinson’s last spring frost lands around May 18 and the first fall frost around Sep 25, a growing season of about 130 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 4b.

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

Last spring frost and first fall frost odds for Dickinson, North Dakota
OddsLast spring frostFirst fall frost
10 percentMay 6Sep 12
50 percentMay 18Sep 25
90 percentMay 31Oct 7

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 Dickinson is typically around 42°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 Dickinson, North Dakota?

Dickinson’s last spring frost falls around May 18 in a typical year. One year in ten it is done by May 6, and one year in ten frost holds on until May 31. Frost-sensitive planting usually waits for the late side of that band.

When is the first fall frost in Dickinson?

The first fall frost arrives around September 25 in a typical year, as early as September 12 in an early year and as late as October 7 in a late one.

How long is the growing season in Dickinson?

About 130 days, counted between the typical last spring frost and the typical first fall frost.

What USDA zone is Dickinson in?

Dickinson is in USDA hardiness zone 4b 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

Row & Bed is a plant reference built around your garden: your zone, your frost dates, your forecast, and a cited page for every variety in your beds.

Set up your garden