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
29°F
Mostly Clear
Mostly clear. Low around 29, with temperatures rising to around 35 overnight. Northwest wind around 6 mph.
7-day forecast for Rapid City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 29°F | Mostly Clear | 6 mph NW | 0% |
| Wednesday | 55°F | Partly Sunny | 6 to 13 mph N | 0% |
| Wednesday Night | 34°F | Partly Cloudy | 3 to 10 mph NW | 0% |
| Thursday | 56°F | Sunny | 2 to 6 mph E | 0% |
| Thursday Night | 35°F | Partly Cloudy | 5 mph SW | 0% |
| Friday | 57°F | Mostly Sunny | 1 to 9 mph NW | 1% |
| Friday Night | 37°F | Mostly Clear | 1 to 6 mph W | 0% |
| Saturday | 63°F | Sunny | 3 to 9 mph NW | 0% |
| Saturday Night | 37°F | Mostly Clear | 6 mph W | 0% |
| Sunday | 70°F | Sunny | 7 mph SW | 0% |
| Sunday Night | 44°F | Mostly Clear | 7 mph W | 0% |
| Monday | 62°F | Sunny | 2 to 7 mph NW | 0% |
| Monday Night | 40°F | Partly Cloudy | 5 mph W | 0% |
| Tuesday | 64°F | Mostly Sunny | 6 mph SW | 0% |
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 Nov 4, 2026.