Frost dates in Norman, OK

The average last spring frost in Norman is around April 5 and the first fall frost is around November 4. That gives Norman an average growing season of about 213 days.

Last spring frost

Early (10% chance after)March 18
Average (50%)April 5
Late (90%)April 17

First fall frost

Early (10%)October 16
Average (50%)November 4
Late (90% chance before)November 23

See the Norman planting calendar →