Shamrock Colony, SD Weather & Growing Conditions
This Afternoon
66°F
Mostly Cloudy
Mostly cloudy, with a high near 66. North northeast wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Mostly Cloudy | 10 mph NNE | 7% |
| Tonight | 56°F | Mostly Cloudy | 5 to 10 mph NE | 4% |
| Sunday | 65°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph ENE | 16% |
| Sunday Night | 50°F | Chance Rain Showers | 10 mph ENE | 48% |
| Monday | 61°F | Chance Rain Showers | 10 mph E | 41% |
| Monday Night | 44°F | Mostly Cloudy | 5 mph ESE | 4% |
| Tuesday | 64°F | Mostly Sunny | 5 to 10 mph SE | 1% |
| Tuesday Night | 47°F | Partly Cloudy | 10 to 15 mph SE | 3% |
| Wednesday | 66°F | Partly Sunny | 15 to 20 mph SE | 10% |
| Wednesday Night | 52°F | Chance Showers And Thunderstorms | 15 mph SSE | 51% |
| Thursday | 70°F | Chance Showers And Thunderstorms | 10 to 15 mph SSE | 51% |
| Thursday Night | 54°F | Mostly Cloudy | 10 mph SE | 12% |
| Friday | 72°F | Partly Sunny | 10 to 15 mph SE | 12% |
| Friday Night | 58°F | Mostly Cloudy then Chance Rain Showers | 10 to 15 mph SE | 25% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Shamrock Colony, SD
Last spring frost
May 5
First fall frost
Oct 5
Growing season
152 days
Hardiness zone
4b
Explore more for Shamrock Colony, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Clark No2, Sd (20.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.