Brant Lake, SD Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Brant Lake, a city in Lake County, South Dakota.

Overnight

58°F

Patchy Smoke

Patchy smoke. Mostly cloudy, with a low around 58. North wind around 10 mph. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Brant Lake

When	Temp	Forecast	Wind	Precip
Overnight	58°F	Patchy Smoke	10 mph N	8%
Tuesday	70°F	Patchy Smoke then Partly Sunny	10 mph NW	12%
Tuesday Night	53°F	Partly Cloudy	0 to 5 mph WNW	2%
Wednesday	77°F	Sunny	0 to 5 mph SSW	0%
Wednesday Night	56°F	Mostly Clear	5 to 10 mph SSW	0%
Thursday	82°F	Sunny	10 to 15 mph SSW	1%
Thursday Night	62°F	Mostly Clear	10 to 15 mph SSW	4%
Friday	86°F	Sunny	10 to 15 mph SSW	11%
Friday Night	63°F	Mostly Clear	5 to 10 mph S	12%
Saturday	87°F	Sunny	5 to 15 mph S	5%
Saturday Night	66°F	Slight Chance Showers And Thunderstorms	10 to 15 mph ESE	21%
Sunday	85°F	Slight Chance Showers And Thunderstorms then Mostly Sunny	15 mph ESE	15%
Sunday Night	65°F	Slight Chance Showers And Thunderstorms	15 mph E	23%
Monday	84°F	Slight Chance Showers And Thunderstorms then Partly Sunny	15 mph ENE	23%

Forecast source: National Weather Service (api.weather.gov) for Brant Lake (43.931, -96.944). Updated through the day.

Growing snapshot for Brant Lake

Last spring frost

May 2

First fall frost

Oct 5

Growing season

156 days

Hardiness zone

More local growing data for Brant Lake: nearby ZIP 57016 weather · frost dates · planting calendar · South Dakota frost dates

Nearby towns & communities

Brant Lake South Chester Graceville Colony Lake Madison Madison Nunda Ramona Rustic Acres Colony Shannon Colony Wentworth Winfred

All South Dakota locations ›

Climate data from the nearest NOAA station, Wentworth 2.5 Wnw, Sd (9.3 mi from Brant Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.