Last frost date in Belgrade, Montana
May 26
Average last frost in spring. In an early year (1 in 10) it's over by May 11; in a late year (1 in 10) it comes after June 12.
September 16
Average first frost in fall. 1 year in 10 it comes by September 2.
Source: NOAA U.S. Climate Normals 1991–2020, station Bozeman Gallatin Fld (USW00024132), 1 miles from Belgrade, elevation 4,427 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | May 11 | May 26 | June 12 |
| First frost in fall | Sept 2 | Sept 16 | Sept 29 |
Frost-free days in an average year: 112
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | June 16 | Sept 4 |
| Frost (32°F) | Every year | May 26 | Sept 16 |
| Hard freeze (28°F) | Every year | May 9 | Sept 28 |
Nights at 32°F or colder in an average year: 198
What to plant now in Belgrade
- Spring planting calendar for an average last frost around May 30 Belgrade: May 26
- Fall planting calendar for an average first frost around September 20 Belgrade: September 16
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5. How we match the table.
Nearby in Montana
- Bozeman 9 mi · last frost May 26
- Helena 69 mi · last frost May 9
- Butte-Silver Bow (balance) 72 mi · last frost June 13
- Great Falls 119 mi · last frost May 6
- Billings 126 mi · last frost May 4
Updated