Ethan, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ethan, a town in Davison County, South Dakota.
This Afternoon
72°F
Mostly Cloudy
Mostly cloudy, with a high near 72. North wind around 5 mph.
7-day forecast for Ethan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Mostly Cloudy | 5 mph N | 5% |
| Tonight | 60°F | Mostly Cloudy then Patchy Fog | 5 to 10 mph NNW | 12% |
| Saturday | 68°F | Patchy Fog | 10 mph N | 16% |
| Saturday Night | 56°F | Cloudy | 5 to 10 mph NNE | 5% |
| Sunday | 65°F | Chance Rain Showers | 10 mph NE | 54% |
| Sunday Night | 53°F | Rain Showers | 10 mph ENE | 78% |
| Monday | 61°F | Rain Showers | 10 mph E | 78% |
| Monday Night | 48°F | Mostly Cloudy | 5 to 10 mph E | 10% |
| Tuesday | 65°F | Mostly Cloudy | 5 to 10 mph SE | 4% |
| Tuesday Night | 50°F | Mostly Cloudy | 10 mph SE | 5% |
| Wednesday | 69°F | Slight Chance Rain Showers | 10 to 15 mph SSE | 19% |
| Wednesday Night | 54°F | Chance Rain Showers | 10 mph SSE | 41% |
| Thursday | 70°F | Slight Chance Showers And Thunderstorms | 10 mph SSE | 41% |
| Thursday Night | 55°F | Mostly Cloudy | 10 mph SE | 7% |
Forecast source: National Weather Service (api.weather.gov) for Ethan (43.546, -97.983). Updated through the day.
Growing snapshot for Ethan
Last spring frost
May 8
First fall frost
Sep 29
Growing season
143 days
Hardiness zone
5a
More local growing data for Ethan: nearby ZIP 57334 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Alexandria, Sd (12.8 mi from Ethan). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.