Brule County, South Dakota · Frost dates
Brule County frost dates.
First-frost, last-frost, and growing-season length for Brule County, South Dakota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4b
32°F — light freeze
Last spring frost
- 10%
- 05-17
- 20%
- 05-11
- 50%
- 05-03
- 80%
- 04-25
- 90%
- 04-19
First fall frost
- 10%
- 09-25
- 20%
- 09-29
- 50%
- 10-07
- 80%
- 10-17
- 90%
- 10-21
28°F — killing freeze
Last spring freeze
- 10%
- 05-06
- 20%
- 05-02
- 50%
- 04-24
- 80%
- 04-14
- 90%
- 04-09
First fall freeze
- 10%
- 10-01
- 20%
- 10-07
- 50%
- 10-17
- 80%
- 10-25
- 90%
- 10-29
Growing season length (days, 28°F threshold)
- Short year
- 148
- Median
- 176
- Long year
- 203
Source NOAA station
CHAMBERLAIN 5 S, SD US
11.0 mi · 30 yrs of record (1991–2020) · 1704 ft elev.
Data from CHAMBERLAIN 5 S, SD US, 11 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
14-day free trial. No credit card. Cancel anytime.