Harman US

Ashton, SD Weather & Growing Conditions

This Afternoon
67°F
Cloudy
Cloudy, with a high near 67. North northeast wind around 13 mph, with gusts as high as 21 mph.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 67°F Cloudy 13 mph NNE 5%
Tonight 57°F Mostly Cloudy 7 to 13 mph NNE 2%
Sunday 64°F Mostly Cloudy then Slight Chance Rain Showers 10 to 14 mph NE 24%
Sunday Night 50°F Chance Rain Showers 7 to 12 mph ENE 50%
Monday 63°F Chance Rain Showers then Mostly Cloudy 8 mph E 28%
Monday Night 43°F Mostly Cloudy 7 mph SE 3%
Tuesday 65°F Mostly Sunny 6 to 14 mph SE 1%
Tuesday Night 47°F Partly Cloudy 12 to 15 mph SE 4%
Wednesday 67°F Partly Sunny 15 to 21 mph SSE 10%
Wednesday Night 52°F Chance Showers And Thunderstorms 18 mph SSE 54%
Thursday 72°F Chance Showers And Thunderstorms 10 to 15 mph SSE 54%
Thursday Night 53°F Slight Chance Rain Showers then Mostly Cloudy 7 to 10 mph SE 18%
Friday 74°F Partly Sunny 7 to 14 mph SE 10%
Friday Night 57°F Mostly Cloudy then Slight Chance Rain Showers 16 mph SSE 24%

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 Sep 19, 2026.