Rapid City, SD Weather & Growing Conditions
Today
67°F
Areas Of Fog
Areas of fog and a chance of showers and thunderstorms before 8am, then areas of fog and a chance of showers and thunderstorms. Cloudy, with a high near 67. East wind 3 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 67°F | Areas Of Fog | 3 to 10 mph E | 42% |
| Tonight | 49°F | Showers And Thunderstorms Likely | 7 to 10 mph E | 73% |
| Sunday | 60°F | Rain Showers | 8 to 13 mph E | 82% |
| Sunday Night | 46°F | Showers And Thunderstorms | 5 to 10 mph E | 98% |
| Monday | 63°F | Chance Rain Showers | 5 to 13 mph E | 41% |
| Monday Night | 45°F | Slight Chance Rain Showers then Mostly Cloudy | 9 to 13 mph SE | 17% |
| Tuesday | 73°F | Mostly Sunny | 9 to 18 mph S | 5% |
| Tuesday Night | 51°F | Partly Cloudy | 12 to 17 mph S | 12% |
| Wednesday | 78°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 12 to 15 mph S | 20% |
| Wednesday Night | 51°F | Chance Showers And Thunderstorms then Mostly Cloudy | 3 to 10 mph S | 31% |
| Thursday | 80°F | Mostly Sunny | 2 to 8 mph S | 9% |
| Thursday Night | 52°F | Mostly Clear | 5 to 8 mph SE | 7% |
| Friday | 81°F | Mostly Sunny | 5 to 16 mph S | 5% |
| Friday Night | 53°F | Partly Cloudy then Slight Chance Rain Showers | 16 mph S | 18% |
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 Sep 19, 2026.