Frost dates in Stanley, IA
The average last spring frost in Stanley is around May 4 and the first fall frost is around October 3. That gives Stanley an average growing season of about 152 days.
Last spring frost
| Early (10% chance after) | April 18 |
|---|---|
| Average (50%) | May 4 |
| Late (90%) | May 16 |
First fall frost
| Early (10%) | September 15 |
|---|---|
| Average (50%) | October 3 |
| Late (90% chance before) | October 14 |