Rapid City weather live forecast

Today's maximum temperature in Rapid City is expected to be 17°C. Select a day from the live weather forecast for Rapid City, South Dakota, USA for more weather parameters.

5-day weather forecast updated at 04:01 on Thursday 18th September 2025 GMT

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The 5-day weather forecast for South Dakota (Rapid City) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Rapid City weather forecast by day

Below are the detailed weather forecasts for Rapid City for the next 5 days.

Rapid City weather for Wednesday 17th September 2025

Expect mostly cloudy with rain in Rapid City, South Dakota with a maximum temperature of 17°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 20-30 mm of rainfall expected with 100% chance of some rain and a gentle breeze of 19 kph from the north.

  • 17°C maximum temperature17
    °C maximum temperature
  • 13°C minimum temperature13
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 100% chance of some rain100
    % chance of some rain
  • 20-30 mm of rainfall expected<30
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 19 kph from the North19
    kph wind from N

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Rapid City weather for Thursday 18th September 2025

Expect mostly cloudy with light rain in Rapid City, South Dakota with a maximum temperature of 18°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 30% chance of some rain and a gentle breeze of 19 kph from the north.

  • 18°C maximum temperature18
    °C maximum temperature
  • 12°C minimum temperature12
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 30% chance of some rain30
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 19 kph from the North19
    kph wind from N

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Rapid City weather for Friday 19th September 2025

Expect broken clouds in Rapid City, South Dakota with a maximum temperature of 20°C, maximum UV of 5 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the east.

  • 20°C maximum temperature20
    °C maximum temperature
  • 10°C minimum temperature10
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 10 kph from the East10
    kph wind from E

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Rapid City weather for Saturday 20th September 2025

Expect scattered clouds in Rapid City, South Dakota with a maximum temperature of 25°C, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the south-east.

  • 25°C maximum temperature25
    °C maximum temperature
  • 12°C minimum temperature12
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 25°C wind chill25
    °C wind chill
  • Light breeze of 10 kph from the South-East10
    kph wind from SE

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Rapid City weather for Sunday 21st September 2025

Expect clear skies in Rapid City, South Dakota with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the west.

  • 28°C maximum temperature28
    °C maximum temperature
  • 14°C minimum temperature14
    °C minimum temperature
  • Clear skies
    clear skies
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Light breeze of 9 kph from the West9
    kph wind from W

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Metric (°C / mm)  |  Imperial (°F / inches)

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