Frost dates in Silvis, IL
The average last spring frost in Silvis is around April 14 and the first fall frost is around October 24. That gives Silvis an average growing season of about 193 days.
Last spring frost
| Early (10% chance after) | April 1 |
|---|---|
| Average (50%) | April 14 |
| Late (90%) | April 28 |
First fall frost
| Early (10%) | October 7 |
|---|---|
| Average (50%) | October 24 |
| Late (90% chance before) | November 6 |