Frost dates in Altoona, PA
The average last spring frost in Altoona is around April 30 and the first fall frost is around October 15. That gives Altoona an average growing season of about 168 days.
Last spring frost
| Early (10% chance after) | April 15 |
|---|---|
| Average (50%) | April 30 |
| Late (90%) | May 17 |
First fall frost
| Early (10%) | October 6 |
|---|---|
| Average (50%) | October 15 |
| Late (90% chance before) | October 31 |