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
46°F
Rain Showers Likely
Rain showers likely. Mostly cloudy, with a high near 46. Northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Millbrook Colony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 46°F | Rain Showers Likely | 15 to 20 mph NW | 71% |
| Tonight | 35°F | Slight Chance Rain Showers then Mostly Cloudy | 15 mph NW | 22% |
| Thursday | 46°F | Mostly Cloudy | 10 to 15 mph NNW | 0% |
| Thursday Night | 29°F | Mostly Cloudy | 0 to 10 mph NE | 0% |
| Friday | 46°F | Mostly Sunny | 0 to 5 mph SE | 0% |
| Friday Night | 29°F | Partly Cloudy | 5 mph SSE | 0% |
| Saturday | 56°F | Mostly Sunny | 5 to 10 mph SSW | 0% |
| Saturday Night | 34°F | Mostly Clear | 5 mph W | 0% |
| Sunday | 58°F | Sunny | 5 to 10 mph SW | 0% |
| Sunday Night | 38°F | Mostly Clear | 5 to 10 mph S | 0% |
| Monday | 61°F | Sunny | 5 to 10 mph WNW | 0% |
| Monday Night | 36°F | Mostly Clear | 5 mph NW | 0% |
| Tuesday | 58°F | Mostly Sunny | 5 mph WSW | 0% |
| Tuesday Night | 39°F | Mostly Cloudy | 5 mph SSE | 0% |
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 Nov 4, 2026.