Mellette, SD Weather & Growing Conditions
Overnight
57°F
Patchy Fog
Patchy fog before 5am, then patchy fog and a slight chance of drizzle. Cloudy, with a low around 57. North northeast wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Patchy Fog | 8 mph NNE | 3% |
| Saturday | 67°F | Patchy Fog then Cloudy | 8 to 13 mph NNE | 3% |
| Saturday Night | 51°F | Mostly Cloudy | 7 to 13 mph NE | 9% |
| Sunday | 67°F | Mostly Cloudy | 13 mph NE | 12% |
| Sunday Night | 49°F | Cloudy then Slight Chance Rain Showers | 6 to 12 mph ENE | 22% |
| Monday | 67°F | Slight Chance Rain Showers then Mostly Cloudy | 8 mph E | 22% |
| Monday Night | 44°F | Partly Cloudy | 7 mph SE | 7% |
| Tuesday | 69°F | Mostly Sunny | 6 to 15 mph SE | 3% |
| Tuesday Night | 48°F | Partly Cloudy | 14 mph SSE | 6% |
| Wednesday | 71°F | Partly Sunny then Slight Chance Rain Showers | 15 to 20 mph SSE | 16% |
| Wednesday Night | 52°F | Chance Rain Showers | 13 to 16 mph SSE | 33% |
| Thursday | 73°F | Chance Rain Showers then Partly Sunny | 10 to 15 mph SSE | 33% |
| Thursday Night | 53°F | Slight Chance Rain Showers | 10 mph SE | 20% |
| Friday | 75°F | Slight Chance Rain Showers then Partly Sunny | 10 to 16 mph SSE | 20% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mellette, SD
Last spring frost
May 11
First fall frost
Sep 27
Growing season
137 days
Hardiness zone
4a
Explore more for Mellette, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Mellette 4 W, Sd (6.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.