Keystone weather live forecast

Today's maximum temperature in Keystone is expected to be 1°C. Select a day from the live weather forecast for Keystone, South Dakota, USA for more weather parameters.

5-day weather forecast updated at 04:03 on Wednesday 26th 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 Wednesday 26th November 2025

Expect broken clouds in Keystone, South Dakota with a maximum temperature of 1°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the west.

  • 1°C maximum temperature1
    °C maximum temperature
  • -6°C minimum temperature-6
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • -1°C wind chill-1
    °C wind chill
  • Little or no wind of 6 kph from the West6
    kph wind from W

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Keystone weather for Thursday 27th November 2025

Expect broken clouds in Keystone, South Dakota with a maximum temperature of 3°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south.

  • 3°C maximum temperature3
    °C maximum temperature
  • -4°C minimum temperature-4
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 0°C wind chill0
    °C wind chill
  • Light breeze of 8 kph from the South8
    kph wind from S

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Keystone weather for Friday 28th November 2025

Expect mostly cloudy with light snow in Keystone, South Dakota with a maximum temperature of 3°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0-2 cm of snow expected with 80% chance of some snow and a gentle breeze of 13 kph from the north.

  • 3°C maximum temperature3
    °C maximum temperature
  • -6°C minimum temperature-6
    °C minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 80% chance of some snow80
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • 0°C wind chill0
    °C wind chill
  • Gentle breeze of 13 kph from the North13
    kph wind from N

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Keystone weather for Saturday 29th November 2025

Expect broken clouds in Keystone, South Dakota with a maximum temperature of -6°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 15 kph from the north.

  • -6°C maximum temperature-6
    °C maximum temperature
  • -13°C minimum temperature-13
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 cm of snow expected0
    cm of snow expected
  • -12°C wind chill-12
    °C wind chill
  • Gentle breeze of 15 kph from the North15
    kph wind from N

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Keystone weather for Sunday 30th November 2025

Expect broken clouds in Keystone, South Dakota with a maximum temperature of -5°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 8 kph from the west.

  • -5°C maximum temperature-5
    °C maximum temperature
  • -13°C minimum temperature-13
    °C minimum temperature
  • Broken clouds
    broken clouds
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 cm of snow expected0
    cm of snow expected
  • -9°C wind chill-9
    °C wind chill
  • Light breeze of 8 kph from the West8
    kph wind from W

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

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