Last frost date in St. George, Utah

March 14

Average last frost in spring. In an early year (1 in 10) it's over by February 27; in a late year (1 in 10) it comes after April 6.

November 10

Average first frost in fall. 1 year in 10 it comes by October 27.

Source: NOAA U.S. Climate Normals 1991–2020, station St George (USC00427516), 3.3 miles from St. George, elevation 2,857 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.

What to plant now

Frost dates for St. George, Utah
Early yearAverageLate year
Last frost in springFeb 27Mar 14Apr 6
First frost in fallOct 27Nov 10Nov 22

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: 239

Planting calendar for St. George

Fall planting

USDA dates for places whose average first freeze is about November 10 (St. George: November 10).

USDA lists chervil and chives, horseradish, leeks, parsnips as generally spring-planted here.

Spring planting

USDA dates for places whose average last freeze is about March 10 (St. George: March 14).

USDA lists chinese cabbage, garlic as generally fall-planted here.

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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