Frost dates in Johnston, SC

The average last spring frost in Johnston is around March 26 and the first fall frost is around November 3. That gives Johnston an average growing season of about 222 days.

Last spring frost

Early (10% chance after)March 12
Average (50%)March 26
Late (90%)April 18

First fall frost

Early (10%)October 19
Average (50%)November 3
Late (90% chance before)November 26

See the Johnston planting calendar →