Frost dates in Castleford, ID
The average last spring frost in Castleford is around May 14 and the first fall frost is around September 25. That gives Castleford an average growing season of about 134 days.
Last spring frost
| Early (10% chance after) | April 27 |
|---|---|
| Average (50%) | May 14 |
| Late (90%) | June 3 |
First fall frost
| Early (10%) | September 10 |
|---|---|
| Average (50%) | September 25 |
| Late (90% chance before) | October 16 |