# Frost dates for Aberdeen, SD (57401)

**Do this (Safe, 2026-11-02):** Frost season started Sep 17. Keep covers ready for cold nights.

| Risk | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|
| Safe (1 in 10 years later) | May 21 | Sep 17 | 119 |
| Median | May 8 | Sep 29 | 144 |
| Bold (9 in 10 years later) | Apr 25 | Oct 11 | 169 |

Frost = 32°F. Station: Aberdeen 3 E, SD, 3 mi away.

## Next nights (NWS overnight low)

- 2026-11-01: 56°F — Go (tonight)
- 2026-11-02: 40°F — Wait
- 2026-11-03: 35°F — Cover
- 2026-11-04: 30°F — Cover
- 2026-11-05: 26°F — Cover
- 2026-11-06: 29°F — Cover
- 2026-11-07: 31°F — Cover

Go above 40°F · Wait 37–40°F · Cover 36°F or less · Freeze 28°F or less.

Source: Frost dates: NOAA NCEI U.S. Climate Normals 1991–2020, station Aberdeen 3 E, SD (3 mi, about your height). Not endorsed by NOAA. Nights: National Weather Service.

Page: https://frostdatecalculator.com/p/sd/aberdeen · JSON: https://frostdatecalculator.com/p/sd/aberdeen?format=json