Frost dates in Ryegate, MT
The average last spring frost in Ryegate is around May 21 and the first fall frost is around September 23. That gives Ryegate an average growing season of about 125 days.
Last spring frost
| Early (10% chance after) | April 30 |
|---|---|
| Average (50%) | May 21 |
| Late (90%) | June 3 |
First fall frost
| Early (10%) | September 3 |
|---|---|
| Average (50%) | September 23 |
| Late (90% chance before) | October 13 |