Frost dates in Jefferson, OK

The average last spring frost in Jefferson is around April 15 and the first fall frost is around October 23. That gives Jefferson an average growing season of about 191 days.

Last spring frost

Early (10% chance after)April 2
Average (50%)April 15
Late (90%)May 1

First fall frost

Early (10%)October 6
Average (50%)October 23
Late (90% chance before)November 5

See the Jefferson planting calendar →