Frost dates in Tappen, ND
The average last spring frost in Tappen is around May 10 and the first fall frost is around October 6. That gives Tappen an average growing season of about 149 days.
Last spring frost
| Early (10% chance after) | April 24 |
|---|---|
| Average (50%) | May 10 |
| Late (90%) | May 22 |
First fall frost
| Early (10%) | September 17 |
|---|---|
| Average (50%) | October 6 |
| Late (90% chance before) | October 14 |