Last frost date in Fairfax, Virginia

April 14

Average last frost in spring. In an early year (1 in 10) it's over by March 30; in a late year (1 in 10) it comes after April 28.

October 29

Average first frost in fall. 1 year in 10 it comes by October 17.

Source: NOAA U.S. Climate Normals 1991–2020, station Vienna (USC00448737), 2.7 miles from Fairfax, elevation 418 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.

What to plant now

Frost dates for Fairfax, Virginia
Early yearAverageLate year
Last frost in springMar 30Apr 14Apr 28
First frost in fallOct 17Oct 29Nov 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: 198

Planting calendar for Fairfax

Fall planting

USDA dates for places whose average first freeze is about October 30 (Fairfax: October 29).

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

Spring planting

USDA dates for places whose average last freeze is about April 10 (Fairfax: April 14).

USDA lists chinese cabbage 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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