Ashton, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ashton, a city in Spink County, South Dakota.
This Afternoon
67°F
Slight Chance Rain Showers
A slight chance of rain showers. Cloudy. High near 67, with temperatures falling to around 63 in the afternoon. Northeast wind around 12 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
7-day forecast for Ashton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Slight Chance Rain Showers | 12 mph NE | 19% |
| Tonight | 57°F | Chance Rain Showers then Mostly Cloudy | 7 to 12 mph NE | 25% |
| Sunday | 64°F | Mostly Cloudy then Slight Chance Rain Showers | 9 to 13 mph NE | 22% |
| Sunday Night | 50°F | Chance Rain Showers | 7 to 12 mph ENE | 51% |
| Monday | 63°F | Chance Rain Showers then Mostly Cloudy | 8 mph E | 29% |
| Monday Night | 43°F | Mostly Cloudy | 7 mph SE | 3% |
| Tuesday | 66°F | Mostly Sunny | 7 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 | 51°F | Showers And Thunderstorms Likely | 18 mph SSE | 59% |
| Thursday | 72°F | Showers And Thunderstorms Likely | 10 to 16 mph SSE | 59% |
| Thursday Night | 53°F | Mostly Cloudy | 7 to 10 mph SE | 10% |
| Friday | 74°F | Partly Sunny | 7 to 15 mph SE | 10% |
| Friday Night | 57°F | Mostly Cloudy then Slight Chance Rain Showers | 13 to 16 mph SSE | 24% |
Forecast source: National Weather Service (api.weather.gov) for Ashton (44.993, -98.499). Updated through the day.
Growing snapshot for Ashton
Last spring frost
May 11
First fall frost
Sep 27
Growing season
137 days
Hardiness zone
4b
More local growing data for Ashton: nearby ZIP 57424 weather · frost dates · planting calendar · South Dakota frost dates
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Mellette
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Spink Colony
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Climate data from the nearest NOAA station, Mellette 4 W, Sd (9.7 mi from Ashton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.