Blackhawk, SD Weather & Growing Conditions
Overnight
47°F
Areas Of Smoke
Areas of smoke. Mostly clear, with a low around 47. Northwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 47°F | Areas Of Smoke | 5 mph NW | 1% |
| Tuesday | 72°F | Areas Of Smoke then Mostly Sunny | 5 mph NE | 4% |
| Tuesday Night | 52°F | Partly Cloudy then Slight Chance Rain Showers | 6 mph SW | 17% |
| Wednesday | 80°F | Sunny | 5 mph S | 6% |
| Wednesday Night | 57°F | Mostly Clear | 6 mph S | 2% |
| Thursday | 89°F | Sunny | 2 to 7 mph N | 3% |
| Thursday Night | 63°F | Mostly Clear | 6 mph W | 1% |
| Friday | 93°F | Sunny | 3 to 9 mph NE | 2% |
| Friday Night | 67°F | Mostly Clear | 8 mph S | 1% |
| Saturday | 94°F | Sunny | 5 to 9 mph N | 2% |
| Saturday Night | 65°F | Mostly Clear | 3 to 9 mph NW | 3% |
| Sunday | 92°F | Mostly Sunny | 3 to 13 mph SE | 8% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms | 5 to 12 mph W | 17% |
| Monday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph NE | 18% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Blackhawk, SD
Last spring frost
May 10
First fall frost
Oct 5
Growing season
147 days
Hardiness zone
5a
Explore more for Blackhawk, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Rapid City 4Nw, Sd (5.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.