Charles Mix County, South Dakota · Frost dates
Charles Mix County frost dates.
First-frost, last-frost, and growing-season length for Charles Mix County, South Dakota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4b
32°F — light freeze
Last spring frost
- 10%
- 05-12
- 20%
- 05-07
- 50%
- 04-30
- 80%
- 04-22
- 90%
- 04-17
First fall frost
- 10%
- 09-29
- 20%
- 10-04
- 50%
- 10-13
- 80%
- 10-21
- 90%
- 10-25
28°F — killing freeze
Last spring freeze
- 10%
- 05-03
- 20%
- 04-29
- 50%
- 04-20
- 80%
- 04-10
- 90%
- 04-06
First fall freeze
- 10%
- 10-07
- 20%
- 10-13
- 50%
- 10-22
- 80%
- 10-30
- 90%
- 11-04
Growing season length (days, 28°F threshold)
- Short year
- 157
- Median
- 185
- Long year
- 212
Source NOAA station
PICKSTOWN, SD US
10.0 mi · 30 yrs of record (1991–2020) · 1490 ft elev.
Data from PICKSTOWN, SD US, 10 miles away with 30-year NOAA record (1991-2020).
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