Rapid City, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rapid City, a city in Pennington County, South Dakota.
Overnight
51°F
Areas Of Smoke
Areas of smoke. Mostly clear, with a low around 51. Northwest wind 3 to 8 mph, with gusts as high as 17 mph.
7-day forecast for Rapid City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Areas Of Smoke | 3 to 8 mph NW | 1% |
| Tuesday | 74°F | Areas Of Smoke then Mostly Sunny | 2 to 8 mph NE | 5% |
| Tuesday Night | 55°F | Partly Cloudy then Slight Chance Rain Showers | 3 to 8 mph S | 16% |
| Wednesday | 84°F | Sunny | 2 to 8 mph S | 6% |
| Wednesday Night | 58°F | Mostly Clear | 6 mph SW | 2% |
| Thursday | 93°F | Sunny | 2 to 8 mph N | 3% |
| Thursday Night | 64°F | Mostly Clear | 5 to 8 mph NW | 1% |
| Friday | 97°F | Sunny | 5 to 12 mph NE | 2% |
| Friday Night | 66°F | Mostly Clear | 6 to 10 mph SW | 1% |
| Saturday | 99°F | Sunny | 7 to 14 mph N | 2% |
| Saturday Night | 66°F | Mostly Clear | 5 to 14 mph N | 3% |
| Sunday | 97°F | Mostly Sunny | 5 to 15 mph SE | 9% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms | 5 to 15 mph N | 17% |
| Monday | 94°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 15 mph NE | 18% |
Forecast source: National Weather Service (api.weather.gov) for Rapid City (44.071, -103.218). Updated through the day.
Growing snapshot for Rapid City
Last spring frost
May 3
First fall frost
Oct 8
Growing season
157 days
Hardiness zone
5b
More local growing data for Rapid City: nearby ZIP 57701 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Caputa
Colonial Pine Hills
Cottonwood
Green Valley
Hill City
Johnson Siding
Keystone
New Underwood
Quinn
Wall
Climate data from the nearest NOAA station, Rapid City Wfo, Sd (3.4 mi from Rapid City). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.