Frost dates in Grenola, KS
The average last spring frost in Grenola is around April 18 and the first fall frost is around October 17. That gives Grenola an average growing season of about 182 days.
Last spring frost
| Early (10% chance after) | April 3 |
|---|---|
| Average (50%) | April 18 |
| Late (90%) | May 3 |
First fall frost
| Early (10%) | September 30 |
|---|---|
| Average (50%) | October 17 |
| Late (90% chance before) | October 29 |