Frost dates in Brownstown, IL
The average last spring frost in Brownstown is around April 6 and the first fall frost is around October 14. That gives Brownstown an average growing season of about 191 days.
Last spring frost
| Early (10% chance after) | March 25 |
|---|---|
| Average (50%) | April 6 |
| Late (90%) | April 20 |
First fall frost
| Early (10%) | October 3 |
|---|---|
| Average (50%) | October 14 |
| Late (90% chance before) | October 27 |