Frost dates in Killdeer, ND
The average last spring frost in Killdeer is around May 18 and the first fall frost is around September 23. That gives Killdeer an average growing season of about 128 days.
Last spring frost
| Early (10% chance after) | May 4 |
|---|---|
| Average (50%) | May 18 |
| Late (90%) | May 28 |
First fall frost
| Early (10%) | September 14 |
|---|---|
| Average (50%) | September 23 |
| Late (90% chance before) | October 8 |