Frost dates for Bozeman, Montana
In a typical year, Bozeman’s last spring frost lands around May 26 and the first fall frost around Sep 22, a growing season of about 119 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 5a.
| Odds | Last spring frost | First fall frost |
|---|---|---|
| 10 percent | May 9 | Sep 5 |
| 50 percent | May 26 | Sep 22 |
| 90 percent | Jun 14 | Oct 5 |
A 10 percent year is an early year, a 90 percent year a late one. Frost-sensitive planting usually waits for the 90 percent side of the last-frost band.
Soil in Bozeman is typically around 67°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.
Plantable now in Bozeman
- Bok choy (Toy Choi)
- Arugula (Astro)
- Mustard greens (Mizuna)
- Tatsoi (Koji)
Timing comes from the same temperature engine the app uses, run against Bozeman’s normals for today.
Nearby cities
- Billings, MT (around May 10 to Oct 1)
- Great Falls, MT (around May 6 to Oct 1)
- Idaho Falls, ID (around May 9 to Oct 1)
- Missoula, MT (around May 10 to Oct 1)
- Gillette, WY (around May 15 to Oct 1)
Row & Bed is a plant reference built around your garden: your zone, your frost dates, your forecast, and a cited page for every variety in your beds.
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