Harman US

Mellette, SD Weather & Growing Conditions

This Afternoon
67°F
Cloudy
Cloudy, with a high near 67. Northeast wind around 12 mph, with gusts as high as 21 mph.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 67°F Cloudy 12 mph NE 5%
Tonight 58°F Mostly Cloudy 6 to 12 mph NE 2%
Sunday 64°F Mostly Cloudy then Chance Rain Showers 13 mph NE 32%
Sunday Night 50°F Chance Rain Showers 6 to 12 mph ENE 46%
Monday 64°F Slight Chance Rain Showers then Mostly Cloudy 8 mph E 20%
Monday Night 43°F Mostly Cloudy 7 mph SE 2%
Tuesday 66°F Mostly Sunny 6 to 13 mph SE 1%
Tuesday Night 48°F Partly Cloudy 10 to 14 mph SSE 4%
Wednesday 68°F Partly Sunny 15 to 20 mph SSE 10%
Wednesday Night 52°F Showers And Thunderstorms Likely 17 mph SSE 55%
Thursday 72°F Showers And Thunderstorms Likely 10 to 15 mph SSE 55%
Thursday Night 54°F Mostly Cloudy 9 mph SE 13%
Friday 74°F Partly Sunny 7 to 14 mph SE 9%
Friday Night 57°F Mostly Cloudy then Slight Chance Rain Showers 12 to 15 mph SSE 23%

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.