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.
Today
72°F
Mostly Sunny
Mostly sunny, with a high near 72. Northwest wind 7 to 12 mph.
7-day forecast for Twin Brooks
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Mostly Sunny | 7 to 12 mph NW | 0% |
| Tonight | 54°F | Mostly Clear | 3 to 8 mph W | 0% |
| Wednesday | 77°F | Sunny | 8 to 12 mph WSW | 0% |
| Wednesday Night | 60°F | Partly Cloudy | 5 to 17 mph SW | 1% |
| Thursday | 81°F | Sunny | 12 to 18 mph SW | 3% |
| Thursday Night | 63°F | Mostly Clear | 7 to 15 mph SW | 5% |
| Friday | 83°F | Sunny | 7 to 15 mph SW | 10% |
| Friday Night | 62°F | Mostly Clear | 6 mph S | 10% |
| Saturday | 82°F | Mostly Sunny | 3 to 10 mph SE | 9% |
| Saturday Night | 63°F | Slight Chance Showers And Thunderstorms | 6 to 9 mph ESE | 23% |
| Sunday | 80°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 6 to 9 mph NE | 23% |
| Sunday Night | 63°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 7 mph ENE | 24% |
| Monday | 78°F | Slight Chance Showers And Thunderstorms | 6 to 10 mph NE | 24% |
| Monday Night | 61°F | Slight Chance Showers And Thunderstorms | 5 to 9 mph NE | 16% |
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 Aug 4, 2026.