Frost dates in St. Peters, MO
The average last spring frost in St. Peters is around April 9 and the first fall frost is around October 29. That gives St. Peters an average growing season of about 203 days.
Last spring frost
| Early (10% chance after) | March 28 |
|---|---|
| Average (50%) | April 9 |
| Late (90%) | April 22 |
First fall frost
| Early (10%) | October 11 |
|---|---|
| Average (50%) | October 29 |
| Late (90% chance before) | November 8 |