Rapid City, SD Weather & Growing Conditions
Today
74°F
Areas Of Smoke
Areas of smoke. Mostly sunny, with a high near 74. Northeast wind 2 to 9 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Areas Of Smoke | 2 to 9 mph NE | 6% |
| Tonight | 53°F | Partly Cloudy then Slight Chance Rain Showers | 2 to 10 mph S | 16% |
| Wednesday | 84°F | Sunny | 2 to 9 mph S | 4% |
| Wednesday Night | 56°F | Mostly Clear | 5 to 8 mph S | 2% |
| Thursday | 94°F | Sunny | 3 to 9 mph N | 2% |
| Thursday Night | 61°F | Mostly Clear | 5 to 9 mph NW | 0% |
| Friday | 97°F | Sunny | 3 to 13 mph NE | 1% |
| Friday Night | 64°F | Mostly Clear | 5 to 13 mph S | 1% |
| Saturday | 99°F | Sunny | 7 to 15 mph N | 1% |
| Saturday Night | 63°F | Mostly Clear | 5 to 15 mph N | 3% |
| Sunday | 97°F | Mostly Sunny | 5 to 18 mph NE | 8% |
| Sunday Night | 64°F | Slight Chance Showers And Thunderstorms | 6 to 18 mph NE | 19% |
| Monday | 94°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 16 mph NE | 16% |
| Monday Night | 62°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 16 mph NE | 35% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Rapid City, SD
Last spring frost
May 12
First fall frost
Oct 1
Growing season
139 days
Hardiness zone
5a
Explore more for Rapid City, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Rapid City Rgnl Ap, Sd (2.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.