Frost dates in South Heart, ND
The average last spring frost in South Heart is around May 24 and the first fall frost is around September 14. That gives South Heart an average growing season of about 113 days.
Last spring frost
| Early (10% chance after) | May 10 |
|---|---|
| Average (50%) | May 24 |
| Late (90%) | June 12 |
First fall frost
| Early (10%) | August 28 |
|---|---|
| Average (50%) | September 14 |
| Late (90% chance before) | September 26 |