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Frost dates for Bemidji, Minnesota

In a typical year, Bemidji’s last spring frost lands around May 17 and the first fall frost around Sep 26, a growing season of about 132 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 3b.

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

Last spring frost and first fall frost odds for Bemidji, Minnesota
OddsLast spring frostFirst fall frost
10 percentMay 3Sep 12
50 percentMay 17Sep 26
90 percentMay 30Oct 11

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 Bemidji 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 Bemidji, Minnesota?

Bemidji’s last spring frost falls around May 17 in a typical year. One year in ten it is done by May 3, and one year in ten frost holds on until May 30. Frost-sensitive planting usually waits for the late side of that band.

When is the first fall frost in Bemidji?

The first fall frost arrives around September 26 in a typical year, as early as September 12 in an early year and as late as October 11 in a late one.

How long is the growing season in Bemidji?

About 132 days, counted between the typical last spring frost and the typical first fall frost.

What USDA zone is Bemidji in?

Bemidji is in USDA hardiness zone 3b 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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