Frost dates in Harrisburg, AR
The average last spring frost in Harrisburg is around March 25 and the first fall frost is around November 8. That gives Harrisburg an average growing season of about 228 days.
Last spring frost
| Early (10% chance after) | March 7 |
|---|---|
| Average (50%) | March 25 |
| Late (90%) | April 12 |
First fall frost
| Early (10%) | October 25 |
|---|---|
| Average (50%) | November 8 |
| Late (90% chance before) | November 24 |