Frost dates in Newton, IA
The average last spring frost in Newton is around April 22 and the first fall frost is around October 11. That gives Newton an average growing season of about 172 days.
Last spring frost
| Early (10% chance after) | April 10 |
|---|---|
| Average (50%) | April 22 |
| Late (90%) | May 6 |
First fall frost
| Early (10%) | October 1 |
|---|---|
| Average (50%) | October 11 |
| Late (90% chance before) | October 27 |