Day County, South Dakota · Frost dates
Day County frost dates.
First-frost, last-frost, and growing-season length for Day County, South Dakota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4b
32°F — light freeze
Last spring frost
- 10%
- 05-16
- 20%
- 05-12
- 50%
- 05-04
- 80%
- 04-26
- 90%
- 04-20
First fall frost
- 10%
- 09-25
- 20%
- 09-29
- 50%
- 10-06
- 80%
- 10-15
- 90%
- 10-20
28°F — killing freeze
Last spring freeze
- 10%
- 05-07
- 20%
- 05-03
- 50%
- 04-25
- 80%
- 04-15
- 90%
- 04-10
First fall freeze
- 10%
- 10-02
- 20%
- 10-06
- 50%
- 10-16
- 80%
- 10-24
- 90%
- 10-29
Growing season length (days, 28°F threshold)
- Short year
- 148
- Median
- 174
- Long year
- 202
Source NOAA station
WEBSTER, SD US
3.2 mi · 30 yrs of record (1991–2020) · 1861 ft elev.
Data from WEBSTER, SD US, 3.2 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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