Frost dates in Larkspur, CO

The average last spring frost in Larkspur is around May 26 and the first fall frost is around September 23. That gives Larkspur an average growing season of about 120 days.

Last spring frost

Early (10% chance after)April 30
Average (50%)May 26
Late (90%)June 11

First fall frost

Early (10%)September 14
Average (50%)September 23
Late (90% chance before)October 13

See the Larkspur planting calendar →