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.

Tonight

53°F

Showers And Thunderstorms

Showers and thunderstorms. Cloudy, with a low around 53. East wind 5 to 8 mph, with gusts as high as 17 mph. Chance of precipitation is 90%.

7-day forecast for Rapid City

When	Temp	Forecast	Wind	Precip
Tonight	53°F	Showers And Thunderstorms	5 to 8 mph E	87%
Sunday	60°F	Patchy Fog	6 to 9 mph E	91%
Sunday Night	49°F	Showers And Thunderstorms	2 to 8 mph NE	98%
Monday	63°F	Rain Showers Likely	3 to 10 mph E	56%
Monday Night	48°F	Chance Rain Showers then Mostly Cloudy	10 mph SE	26%
Tuesday	72°F	Mostly Sunny	9 to 18 mph SE	4%
Tuesday Night	53°F	Partly Cloudy	12 to 16 mph S	9%
Wednesday	80°F	Mostly Sunny then Chance Showers And Thunderstorms	12 to 16 mph S	25%
Wednesday Night	55°F	Partly Cloudy	5 to 10 mph SW	11%
Thursday	83°F	Sunny	2 to 9 mph N	3%
Thursday Night	56°F	Mostly Clear	6 mph S	5%
Friday	82°F	Mostly Sunny	6 to 17 mph S	6%
Friday Night	58°F	Slight Chance Rain Showers then Partly Cloudy	12 to 15 mph S	15%
Saturday	81°F	Slight Chance Rain Showers then Mostly Sunny	10 to 14 mph S	16%

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

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

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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 Sep 20, 2026.