Keystone weather live forecast

Tomorrow's maximum temperature in Keystone is expected to be 15°C.

5-day weather forecast updated at 04:03 on Tuesday 27th May 2025 GMT

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

Keystone weather forecast by day

Below are the detailed weather forecasts for Keystone for the next 5 days.

Keystone weather for Tuesday 27th May 2025

Expect broken clouds in Keystone, South Dakota with a maximum temperature of 15°C, maximum UV of 6 (High) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the south-east.

  • 15°C maximum temperature15
    °C maximum temperature
  • 7°C minimum temperature7
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 15°C wind chill15
    °C wind chill
  • Light breeze of 9 kph from the South-East9
    kph wind from SE

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Keystone weather for Wednesday 28th May 2025

Expect broken clouds in Keystone, South Dakota with a maximum temperature of 14°C, maximum UV of 7 (High) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the east.

  • 14°C maximum temperature14
    °C maximum temperature
  • 9°C minimum temperature9
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 11 kph from the East11
    kph wind from E

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Keystone weather for Thursday 29th May 2025

Expect scattered clouds in Keystone, South Dakota with a maximum temperature of 19°C, maximum UV of 7 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south-east.

  • 19°C maximum temperature19
    °C maximum temperature
  • 7°C minimum temperature7
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 11 hours of bright sunshine11
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 19°C wind chill19
    °C wind chill
  • Light breeze of 12 kph from the South-East12
    kph wind from SE

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Keystone weather for Friday 30th May 2025

Expect clear skies in Keystone, South Dakota with a maximum temperature of 23°C, maximum UV of 9 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north.

  • 23°C maximum temperature23
    °C maximum temperature
  • 10°C minimum temperature10
    °C minimum temperature
  • Clear skies
    clear skies
  • 13 hours of bright sunshine13
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 11 kph from the North11
    kph wind from N

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Keystone weather for Saturday 31st May 2025

Expect scattered clouds in Keystone, South Dakota with a maximum temperature of 22°C, maximum UV of 9 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the north-west.

  • 22°C maximum temperature22
    °C maximum temperature
  • 11°C minimum temperature11
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 11 hours of bright sunshine11
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 10 kph from the North-West10
    kph wind from NW

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

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