Marion, SD Weather & Growing Conditions
Tonight
62°F
Mostly Cloudy then Patchy Fog
Patchy fog after midnight. Mostly cloudy, with a low around 62. North wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Mostly Cloudy then Patchy Fog | 5 to 10 mph N | 5% |
| Saturday | 68°F | Patchy Fog then Cloudy | 10 mph N | 13% |
| Saturday Night | 57°F | Cloudy | 10 mph NNE | 5% |
| Sunday | 65°F | Mostly Cloudy then Chance Rain Showers | 10 to 15 mph NE | 41% |
| Sunday Night | 54°F | Rain Showers Likely | 10 mph ENE | 73% |
| Monday | 61°F | Rain Showers Likely | 10 mph ENE | 73% |
| Monday Night | 48°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph E | 18% |
| Tuesday | 64°F | Partly Sunny | 5 to 10 mph ESE | 3% |
| Tuesday Night | 50°F | Partly Cloudy | 10 mph SE | 3% |
| Wednesday | 68°F | Partly Sunny | 10 to 15 mph SSE | 13% |
| Wednesday Night | 54°F | Chance Rain Showers | 10 mph SSE | 41% |
| Thursday | 69°F | Chance Rain Showers | 10 mph SSE | 41% |
| Thursday Night | 55°F | Mostly Cloudy | 5 to 10 mph SE | 11% |
| Friday | 70°F | Partly Sunny | 10 to 15 mph SE | 14% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Marion, SD
Last spring frost
Apr 30
First fall frost
Oct 7
Growing season
161 days
Hardiness zone
5a
Explore more for Marion, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Bridgewater, Sd (13.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.