Frost dates in Jamestown, KS
The average last spring frost in Jamestown is around April 18 and the first fall frost is around October 19. That gives Jamestown an average growing season of about 184 days.
Last spring frost
| Early (10% chance after) | April 3 |
|---|---|
| Average (50%) | April 18 |
| Late (90%) | May 4 |
First fall frost
| Early (10%) | October 6 |
|---|---|
| Average (50%) | October 19 |
| Late (90% chance before) | October 30 |