Harman US

Lower Brule, SD Weather & Growing Conditions

Today
66°F
Patchy Fog then Mostly Cloudy
Patchy fog and a slight chance of drizzle before 11am. Mostly cloudy, with a high near 66. North northeast wind 8 to 12 mph. Chance of precipitation is 20%.

7-day forecast

WhenTempForecastWindPrecip
Today 66°F Patchy Fog then Mostly Cloudy 8 to 12 mph NNE 18%
Tonight 53°F Cloudy 10 to 14 mph NE 13%
Sunday 62°F Rain Showers Likely 14 mph ENE 63%
Sunday Night 50°F Rain Showers 13 mph ENE 88%
Monday 62°F Rain Showers 12 mph E 88%
Monday Night 46°F Mostly Cloudy 10 mph ESE 10%
Tuesday 66°F Partly Sunny 12 to 17 mph SE 8%
Tuesday Night 50°F Mostly Cloudy 16 mph SE 14%
Wednesday 70°F Slight Chance Rain Showers 16 to 20 mph SE 19%
Wednesday Night 53°F Chance Showers And Thunderstorms 14 to 17 mph SE 40%
Thursday 73°F Chance Showers And Thunderstorms 13 mph SE 30%
Thursday Night 54°F Slight Chance Rain Showers then Mostly Cloudy 13 mph SE 17%
Friday 74°F Partly Sunny 12 to 17 mph SE 12%
Friday Night 56°F Mostly Cloudy then Slight Chance Rain Showers 16 mph SE 17%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Lower Brule, SD

Last spring frost
May 6
First fall frost
Oct 5
Growing season
152 days
Hardiness zone
4b

Explore more for Lower Brule, SD: full frost dates · planting calendar · South Dakota frost dates

Climate data from the nearest NOAA station, Lake Sharpe Prj, Sd (9.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.