Keystone weather live forecast

Today's maximum temperature in Keystone is expected to be 15°C. Select a day from the live weather forecast for Keystone, South Dakota, USA for more weather parameters.

  • Saturday
    15th Nov
    Scattered clouds
  • Sunday
    16th Nov
    Broken clouds
  • Monday
    17th Nov
    Mostly cloudy with light rain (2-5 mm of rainfall expected)
  • Tuesday
    18th Nov
    Fog in low lying areas
  • Wednesday
    19th Nov
    Overcast skies

5-day weather forecast updated at 04:03 on Saturday 15th November 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 Saturday 15th November 2025

Expect scattered clouds in Keystone, South Dakota with a maximum temperature of 15°C, maximum UV of 2 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the west.

  • 15°C maximum temperature15
    °C maximum temperature
  • 5°C minimum temperature5
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 15°C wind chill15
    °C wind chill
  • Light breeze of 10 kph from the West10
    kph wind from W

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Keystone weather for Sunday 16th November 2025

Expect broken clouds in Keystone, South Dakota with a maximum temperature of 13°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the south-east.

  • 13°C maximum temperature13
    °C maximum temperature
  • 4°C minimum temperature4
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 11 kph from the South-East11
    kph wind from SE

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Keystone weather for Monday 17th November 2025

Expect mostly cloudy with light rain in Keystone, South Dakota with a maximum temperature of 9°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 61% chance of some rain and a light breeze of 8 kph from the south-west.

  • 9°C maximum temperature9
    °C maximum temperature
  • 5°C minimum temperature5
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 61% chance of some rain61
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 8°C wind chill8
    °C wind chill
  • Light breeze of 8 kph from the South-West8
    kph wind from SW

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Keystone weather for Tuesday 18th November 2025

Expect fog in low lying areas in Keystone, South Dakota with a maximum temperature of 10°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south-east.

  • 10°C maximum temperature10
    °C maximum temperature
  • 3°C minimum temperature3
    °C minimum temperature
  • Fog in low lying areas
    fog in low lying areas
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 8 kph from the South-East8
    kph wind from SE

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Keystone weather for Wednesday 19th November 2025

Expect overcast skies in Keystone, South Dakota with a maximum temperature of 10°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north-east.

  • 10°C maximum temperature10
    °C maximum temperature
  • 3°C minimum temperature3
    °C minimum temperature
  • Overcast skies
    overcast skies
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 9°C wind chill9
    °C wind chill
  • Light breeze of 7 kph from the North-East7
    kph wind from NE

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

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