Frost dates in College Springs, IA
The average last spring frost in College Springs is around April 27 and the first fall frost is around October 8. That gives College Springs an average growing season of about 164 days.
Last spring frost
| Early (10% chance after) | April 14 |
|---|---|
| Average (50%) | April 27 |
| Late (90%) | May 12 |
First fall frost
| Early (10%) | September 24 |
|---|---|
| Average (50%) | October 8 |
| Late (90% chance before) | October 23 |