Last frost date in Sandpoint, Idaho

May 8

Average last frost in spring. In an early year (1 in 10) it's over by April 23; in a late year (1 in 10) it comes after May 25.

September 28

Average first frost in fall. 1 year in 10 it comes by September 11.

Source: NOAA U.S. Climate Normals 1991–2020, station Sandpoint Exp Stn (USC00108137), 0.9 miles from Sandpoint, elevation 2,126 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.

What to plant now

Frost dates for Sandpoint, Idaho
Early yearAverageLate year
Last frost in springApr 23May 8May 25
First frost in fallSept 11Sept 28Oct 11

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: 141

Planting calendar for Sandpoint

Fall planting

USDA dates for places whose average first freeze is about September 30 (Sandpoint: September 28).

USDA lists chervil and chives, 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 10 (Sandpoint: May 8).

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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