Frost dates in Herndon, VA

The average last spring frost in Herndon is around April 20 and the first fall frost is around October 18. That gives Herndon an average growing season of about 181 days.

Last spring frost

Early (10% chance after)April 6
Average (50%)April 20
Late (90%)May 10

First fall frost

Early (10%)October 4
Average (50%)October 18
Late (90% chance before)November 4

See the Herndon planting calendar →