Frost dates in Shenandoah, IA
The average last spring frost in Shenandoah is around April 26 and the first fall frost is around October 10. That gives Shenandoah an average growing season of about 167 days.
Last spring frost
| Early (10% chance after) | April 11 |
|---|---|
| Average (50%) | April 26 |
| Late (90%) | May 10 |
First fall frost
| Early (10%) | September 27 |
|---|---|
| Average (50%) | October 10 |
| Late (90% chance before) | October 27 |