Frost dates in Sergeant Bluff, IA
The average last spring frost in Sergeant Bluff is around April 25 and the first fall frost is around October 13. That gives Sergeant Bluff an average growing season of about 171 days.
Last spring frost
| Early (10% chance after) | April 14 |
|---|---|
| Average (50%) | April 25 |
| Late (90%) | May 16 |
First fall frost
| Early (10%) | October 2 |
|---|---|
| Average (50%) | October 13 |
| Late (90% chance before) | October 20 |