Aurora County, South Dakota · Frost dates
Aurora County frost dates.
First-frost, last-frost, and growing-season length for Aurora 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%
- 04-20
First fall frost
- 10%
- 09-21
- 20%
- 09-27
- 50%
- 10-05
- 80%
- 10-14
- 90%
- 10-18
28°F — killing freeze
Last spring freeze
- 10%
- 05-07
- 20%
- 05-03
- 50%
- 04-25
- 80%
- 04-15
- 90%
- 04-11
First fall freeze
- 10%
- 09-29
- 20%
- 10-04
- 50%
- 10-14
- 80%
- 10-23
- 90%
- 10-27
Growing season length (days, 28°F threshold)
- Short year
- 145
- Median
- 172
- Long year
- 199
Source NOAA station
WHITE LAKE, SD US
5.4 mi · 30 yrs of record (1991–2020) · 1629 ft elev.
Data from WHITE LAKE, SD US, 5.4 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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