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.
This Afternoon
48°F
Light Rain Likely
Rain likely. Cloudy. High near 48, with temperatures falling to around 44 in the afternoon. North northwest wind around 23 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Twin Brooks
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 48°F | Light Rain Likely | 23 mph NNW | 63% |
| Tonight | 38°F | Light Rain | 15 to 20 mph NNW | 90% |
| Wednesday | 44°F | Light Rain | 20 mph NNW | 90% |
| Wednesday Night | 34°F | Chance Light Rain then Mostly Cloudy | 16 mph NNW | 41% |
| Thursday | 41°F | Partly Sunny | 9 to 16 mph N | 5% |
| Thursday Night | 30°F | Mostly Cloudy | 2 to 8 mph N | 0% |
| Friday | 44°F | Partly Sunny | 5 mph SW | 0% |
| Friday Night | 31°F | Partly Cloudy | 3 to 7 mph SSW | 0% |
| Saturday | 55°F | Mostly Sunny | 7 to 12 mph WSW | 2% |
| Saturday Night | 37°F | Partly Cloudy | 10 mph W | 4% |
| Sunday | 56°F | Sunny | 8 mph WSW | 2% |
| Sunday Night | 40°F | Partly Cloudy | 7 to 12 mph SW | 0% |
| Monday | 58°F | Mostly Sunny | 9 to 14 mph WNW | 0% |
| Monday Night | 38°F | Mostly Clear | 6 to 9 mph WNW | 0% |
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 Nov 4, 2026.