Keystone weather live forecast

Tomorrow's maximum temperature in Keystone is expected to be 41°F.

5-day weather forecast updated at 04:02 on Friday 18th April 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 Friday 18th April 2025

Expect cloudy with sleet or snow in Keystone, South Dakota with a maximum temperature of 41°F, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 0-2 mm of sleet/snow expected with 47% chance of some sleet or snow and a gentle breeze of 10 mph from the north.

  • 41°F maximum temperature41
    °F maximum temperature
  • 28°F minimum temperature28
    °F minimum temperature
  • Cloudy with sleet or snow
    cloudy with sleet or snow
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 47% chance of some sleet or snow47
    % chance of some sleet or snow
  • 0-2 mm of sleet/snow expected<2
    mm of sleet/snow expected
  • 34°F wind chill34
    °F wind chill
  • Gentle breeze of 10 mph from the North10
    mph wind from N

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Keystone weather for Saturday 19th April 2025

Expect clear skies in Keystone, South Dakota with a maximum temperature of 50°F, maximum UV of 6 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the south-west.

  • 50°F maximum temperature50
    °F maximum temperature
  • 25°F minimum temperature25
    °F minimum temperature
  • Clear skies
    clear skies
  • 13 hours of bright sunshine13
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 9 mph from the South-West9
    mph wind from SW

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Keystone weather for Sunday 20th April 2025

Expect scattered clouds in Keystone, South Dakota with a maximum temperature of 59°F, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 6 mph from the south-west.

  • 59°F maximum temperature59
    °F maximum temperature
  • 34°F minimum temperature34
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 6 mph from the South-West6
    mph wind from SW

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Keystone weather for Monday 21st April 2025

Expect sunshine and showers in Keystone, South Dakota with a maximum temperature of 64°F, maximum UV of 5 (Moderate) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 16% chance of some rain and a gentle breeze of 10 mph from the south-west.

  • 64°F maximum temperature64
    °F maximum temperature
  • 36°F minimum temperature36
    °F minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 16% chance of some rain16
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 64°F wind chill64
    °F wind chill
  • Gentle breeze of 10 mph from the South-West10
    mph wind from SW

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Keystone weather for Tuesday 22nd April 2025

Expect scattered clouds in Keystone, South Dakota with a maximum temperature of 55°F, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the north-west.

  • 55°F maximum temperature55
    °F maximum temperature
  • 39°F minimum temperature39
    °F 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
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 9 mph from the North-West9
    mph wind from NW

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