Frost dates in Rugby, ND

The average last spring frost in Rugby is around May 14 and the first fall frost is around September 21. That gives Rugby an average growing season of about 130 days.

Last spring frost

Early (10% chance after)April 30
Average (50%)May 14
Late (90%)May 28

First fall frost

Early (10%)September 9
Average (50%)September 21
Late (90% chance before)October 6

See the Rugby planting calendar →