Frost dates for Ann Arbor, Michigan
In a typical year, Ann Arbor’s last spring frost lands around May 8 and the first fall frost around Oct 4, a growing season of about 149 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 6a.
| Odds | Last spring frost | First fall frost |
|---|---|---|
| 10 percent | Apr 23 | Sep 20 |
| 50 percent | May 8 | Oct 4 |
| 90 percent | May 26 | Oct 17 |
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 Ann Arbor is typically around 69°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.
Plantable now in Ann Arbor
- Radish (Cherry Belle)
- Spinach (Space)
- Arugula (Astro)
- Mustard greens (Red Giant)
- Tatsoi (Tatsoi)
- Dill (Bouquet)
- Turnip (Purple Top White Globe)
- Cilantro (Santo)
Timing comes from the same temperature engine the app uses, run against Ann Arbor’s normals for today.
Nearby cities
- Detroit, MI (around Apr 27 to Oct 25)
- Warren, MI (around Apr 21 to Oct 31)
- Sterling Heights, MI (around Apr 21 to Oct 31)
- Toledo, OH (around Apr 20 to Oct 27)
- Fort Wayne, IN (around Apr 24 to Oct 21)
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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