Frost dates in Guttenberg, IA
The average last spring frost in Guttenberg is around April 20 and the first fall frost is around October 13. That gives Guttenberg an average growing season of about 176 days.
Last spring frost
| Early (10% chance after) | April 9 |
|---|---|
| Average (50%) | April 20 |
| Late (90%) | May 5 |
First fall frost
| Early (10%) | October 1 |
|---|---|
| Average (50%) | October 13 |
| Late (90% chance before) | November 1 |