Last frost date in Grand Rapids, Minnesota

May 17

Average last frost in spring. In an early year (1 in 10) it's over by May 3; in a late year (1 in 10) it comes after May 31.

September 24

Average first frost in fall. 1 year in 10 it comes by September 10.

Source: NOAA U.S. Climate Normals 1991–2020, station Grand Rpds Forest Lab (USC00213303), 1.7 miles from Grand Rapids, elevation 1,310 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.

What to plant now

Frost dates for Grand Rapids, Minnesota
Early yearAverageLate year
Last frost in springMay 3May 17May 31
First frost in fallSept 10Sept 24Oct 7

An early or late year is one in 10: 1 year in 10 the frost comes before the early date, and 1 year in 10 after the late date.

Frost-free days in an average year: 130

Planting calendar for Grand Rapids

Fall planting

USDA dates for places whose average first freeze is about September 20 (Grand Rapids: September 24).

USDA lists garlic, horseradish, leeks, onion plants, onion seed, onion sets, shallots as generally spring-planted here.

Spring planting

USDA dates for places whose average last freeze is about May 20 (Grand Rapids: May 17).

Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5 (earliest safe spring and latest safe fall dates), applied to this place's NOAA frost dates. “Plants” means setting out transplants, not sowing seed. How we match the table.

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