Frost dates for Aberdeen, South Dakota
In a typical year, Aberdeen’s last spring frost lands around May 7 and the first fall frost around Sep 29, a growing season of about 145 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 4a.
| Odds | Last spring frost | First fall frost |
|---|---|---|
| 10 percent | Apr 26 | Sep 18 |
| 50 percent | May 7 | Sep 29 |
| 90 percent | May 22 | Oct 12 |
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 Aberdeen is typically around 70°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.
Plantable now in Aberdeen
- Radish (Cherry Belle)
- Bok choy (Toy Choi)
- Spinach (Space)
- Arugula (Astro)
- Lettuce (Black Seeded Simpson)
- Mustard greens (Red Giant)
- Tatsoi (Tatsoi)
- Swiss chard (Fordhook Giant)
Timing comes from the same temperature engine the app uses, run against Aberdeen’s normals for today.
Nearby cities
- Fargo, ND (around May 5 to Oct 3)
- Brookings, SD (around May 6 to Oct 1)
- Bismarck, ND (around May 10 to Sep 30)
- Sioux Falls, SD (around Apr 26 to Oct 13)
- Grand Forks, ND (around May 10 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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