Frost dates in Ipswich, SD
The average last spring frost in Ipswich is around May 15 and the first fall frost is around September 22. That gives Ipswich an average growing season of about 130 days.
Last spring frost
| Early (10% chance after) | April 29 |
|---|---|
| Average (50%) | May 15 |
| Late (90%) | May 30 |
First fall frost
| Early (10%) | September 10 |
|---|---|
| Average (50%) | September 22 |
| Late (90% chance before) | October 10 |