Millbrook Colony, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Millbrook Colony, a community in Hanson County, South Dakota.
Today
68°F
Patchy Drizzle then Cloudy
Patchy drizzle and patchy fog before 11am. Cloudy, with a high near 68. North wind around 10 mph.
7-day forecast for Millbrook Colony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 68°F | Patchy Drizzle then Cloudy | 10 mph N | 11% |
| Tonight | 55°F | Cloudy | 5 to 10 mph NNE | 5% |
| Sunday | 66°F | Cloudy then Chance Rain Showers | 10 to 15 mph NE | 25% |
| Sunday Night | 51°F | Rain Showers Likely | 10 mph ENE | 68% |
| Monday | 63°F | Rain Showers Likely | 10 mph E | 68% |
| Monday Night | 46°F | Mostly Cloudy | 5 to 10 mph E | 6% |
| Tuesday | 66°F | Partly Sunny | 5 to 15 mph SE | 3% |
| Tuesday Night | 48°F | Partly Cloudy | 10 to 15 mph SE | 3% |
| Wednesday | 69°F | Partly Sunny | 15 mph SSE | 14% |
| Wednesday Night | 52°F | Chance Rain Showers | 10 to 15 mph SSE | 35% |
| Thursday | 70°F | Chance Showers And Thunderstorms | 10 to 15 mph SSE | 35% |
| Thursday Night | 54°F | Slight Chance Rain Showers | 10 mph SE | 16% |
| Friday | 73°F | Slight Chance Rain Showers then Partly Sunny | 10 to 15 mph SE | 15% |
| Friday Night | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph SE | 19% |
Forecast source: National Weather Service (api.weather.gov) for Millbrook Colony (43.668, -97.871). Updated through the day.
Growing snapshot for Millbrook Colony
Last spring frost
May 8
First fall frost
Sep 29
Growing season
143 days
Hardiness zone
5a
More local growing data for Millbrook Colony: nearby ZIP 57311 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Alexandria, Sd (1.7 mi from Millbrook Colony). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.