Custer County, South Dakota · Frost dates
Custer County frost dates.
First-frost, last-frost, and growing-season length for Custer County, South Dakota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4b
32°F — light freeze
Last spring frost
- 10%
- 06-06
- 20%
- 06-01
- 50%
- 05-23
- 80%
- 05-15
- 90%
- 05-10
First fall frost
- 10%
- 09-09
- 20%
- 09-15
- 50%
- 09-24
- 80%
- 10-04
- 90%
- 10-09
28°F — killing freeze
Last spring freeze
- 10%
- 05-24
- 20%
- 05-18
- 50%
- 05-10
- 80%
- 05-02
- 90%
- 04-29
First fall freeze
- 10%
- 09-23
- 20%
- 09-28
- 50%
- 10-05
- 80%
- 10-15
- 90%
- 10-20
Growing season length (days, 28°F threshold)
- Short year
- 122
- Median
- 148
- Long year
- 174
Source NOAA station
CUSTER CO AP, SD US
8.2 mi · 30 yrs of record (1991–2020) · 5545 ft elev.
Data from CUSTER CO AP, SD US, 8.2 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
14-day free trial. No credit card. Cancel anytime.