Frost dates in New Witten, SD
The average last spring frost in New Witten is around May 10 and the first fall frost is around October 7. That gives New Witten an average growing season of about 150 days.
Last spring frost
| Early (10% chance after) | April 19 |
|---|---|
| Average (50%) | May 10 |
| Late (90%) | June 3 |
First fall frost
| Early (10%) | September 7 |
|---|---|
| Average (50%) | October 7 |
| Late (90% chance before) | October 23 |