Twin Brooks, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Twin Brooks, a town in Grant County, South Dakota.
Overnight
56°F
Areas Of Drizzle
Areas of drizzle and areas of fog before 5am, then areas of fog and patchy drizzle. Cloudy, with a low around 56. Northeast wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Twin Brooks
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Areas Of Drizzle | 7 mph NE | 33% |
| Saturday | 64°F | Patchy Fog | 7 to 10 mph NNE | 17% |
| Saturday Night | 53°F | Mostly Cloudy | 6 to 9 mph NNE | 6% |
| Sunday | 66°F | Mostly Cloudy | 7 to 12 mph NE | 8% |
| Sunday Night | 50°F | Cloudy then Chance Rain Showers | 3 to 8 mph ENE | 34% |
| Monday | 62°F | Chance Rain Showers | 7 mph E | 34% |
| Monday Night | 46°F | Mostly Cloudy | 6 mph ESE | 4% |
| Tuesday | 65°F | Partly Sunny | 3 to 10 mph SE | 1% |
| Tuesday Night | 48°F | Partly Cloudy | 8 mph SE | 4% |
| Wednesday | 67°F | Mostly Sunny | 6 to 12 mph SSE | 9% |
| Wednesday Night | 52°F | Chance Rain Showers | 8 mph SSE | 31% |
| Thursday | 71°F | Chance Rain Showers | 8 mph S | 31% |
| Thursday Night | 54°F | Partly Cloudy | 6 mph SSE | 10% |
| Friday | 72°F | Partly Sunny | 5 to 10 mph SSE | 10% |
Forecast source: National Weather Service (api.weather.gov) for Twin Brooks (45.209, -96.786). Updated through the day.
Growing snapshot for Twin Brooks
Last spring frost
May 2
First fall frost
Oct 4
Growing season
153 days
Hardiness zone
4b
More local growing data for Twin Brooks: nearby ZIP 57269 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Milbank 4 Nw, Sd (7.6 mi from Twin Brooks). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.