Frost dates in Mammoth Spring, AR
The average last spring frost in Mammoth Spring is around April 16 and the first fall frost is around October 20. That gives Mammoth Spring an average growing season of about 187 days.
Last spring frost
| Early (10% chance after) | March 31 |
|---|---|
| Average (50%) | April 16 |
| Late (90%) | May 2 |
First fall frost
| Early (10%) | October 6 |
|---|---|
| Average (50%) | October 20 |
| Late (90% chance before) | November 2 |