Frost dates in Luther, IA
The average last spring frost in Luther is around April 24 and the first fall frost is around October 9. That gives Luther an average growing season of about 168 days.
Last spring frost
| Early (10% chance after) | April 9 |
|---|---|
| Average (50%) | April 24 |
| Late (90%) | May 9 |
First fall frost
| Early (10%) | September 27 |
|---|---|
| Average (50%) | October 9 |
| Late (90% chance before) | October 28 |