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.
This Afternoon
65°F
Patchy Fog
Patchy fog. Cloudy, with a high near 65. East wind around 5 mph.
7-day forecast for Brant Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Patchy Fog | 5 mph E | 13% |
| Tonight | 59°F | Areas Of Fog | 5 to 10 mph NE | 20% |
| Saturday | 66°F | Patchy Fog then Cloudy | 10 to 15 mph NNE | 16% |
| Saturday Night | 54°F | Cloudy | 10 to 15 mph NE | 3% |
| Sunday | 64°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph NE | 21% |
| Sunday Night | 51°F | Chance Rain Showers | 10 to 15 mph ENE | 53% |
| Monday | 61°F | Chance Rain Showers | 10 to 15 mph E | 53% |
| Monday Night | 46°F | Mostly Cloudy | 5 to 10 mph E | 10% |
| Tuesday | 64°F | Partly Sunny | 5 to 10 mph ESE | 3% |
| Tuesday Night | 47°F | Partly Cloudy | 5 to 10 mph SE | 3% |
| Wednesday | 67°F | Partly Sunny | 5 to 15 mph SSE | 10% |
| Wednesday Night | 51°F | Chance Rain Showers | 10 mph SSE | 38% |
| Thursday | 68°F | Chance Rain Showers | 10 mph SSE | 38% |
| Thursday Night | 53°F | Mostly Cloudy | 5 mph SE | 13% |
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
4b
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
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 Sep 19, 2026.