Ashton, SD Weather & Growing Conditions
Today
48°F
Light Rain Likely
Rain likely before 2pm. Mostly cloudy, with a high near 48. North northwest wind 16 to 22 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 48°F | Light Rain Likely | 16 to 22 mph NNW | 56% |
| Tonight | 29°F | Mostly Cloudy | 15 mph NNW | 0% |
| Thursday | 41°F | Mostly Cloudy | 8 to 15 mph N | 0% |
| Thursday Night | 22°F | Mostly Cloudy | 2 to 7 mph E | 0% |
| Friday | 42°F | Partly Sunny | 2 to 7 mph SSE | 0% |
| Friday Night | 24°F | Partly Cloudy | 6 mph S | 0% |
| Saturday | 55°F | Sunny | 6 to 12 mph SW | 1% |
| Saturday Night | 30°F | Mostly Clear | 5 to 9 mph W | 0% |
| Sunday | 56°F | Sunny | 5 to 10 mph SSW | 0% |
| Sunday Night | 33°F | Mostly Clear | 6 to 9 mph SSW | 0% |
| Monday | 60°F | Mostly Sunny | 6 to 12 mph WNW | 0% |
| Monday Night | 31°F | Mostly Clear | 3 to 8 mph NW | 0% |
| Tuesday | 55°F | Mostly Sunny | 3 to 7 mph SW | 1% |
| Tuesday Night | 34°F | Partly Cloudy | 6 mph SSE | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Ashton, SD
Last spring frost
May 11
First fall frost
Sep 27
Growing season
137 days
Hardiness zone
4b
Explore more for Ashton, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Mellette 4 W, Sd (9.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.