Keystone weather live forecast

Today's maximum temperature in Keystone is expected to be 2°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 Thursday 27th 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 Thursday 27th November 2025

Expect broken clouds in Keystone, South Dakota with a maximum temperature of 2°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south.

  • 2°C maximum temperature2
    °C maximum temperature
  • -3°C minimum temperature-3
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    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 broken clouds in Keystone, South Dakota with a maximum temperature of 3°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the north.

  • 3°C maximum temperature3
    °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
  • Gentle breeze of 14 kph from the North14
    kph wind from N

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Keystone weather for Saturday 29th November 2025

Expect clear skies with flurries of snow in Keystone, South Dakota with a maximum temperature of -6°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0-2 cm of snow expected with 21% chance of some snow and a gentle breeze of 19 kph from the north.

  • -6°C maximum temperature-6
    °C maximum temperature
  • -13°C minimum temperature-13
    °C minimum temperature
  • Clear skies with flurries of snow
    clear skies with flurries of snow
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 21% chance of some snow21
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -13°C wind chill-13
    °C wind chill
  • Gentle breeze of 19 kph from the North19
    kph wind from N

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Keystone weather for Sunday 30th November 2025

Expect clear skies in Keystone, South Dakota with a maximum temperature of -6°C, maximum UV of 1 (Low) and 9 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 8 kph from the west.

  • -6°C maximum temperature-6
    °C maximum temperature
  • -14°C minimum temperature-14
    °C minimum temperature
  • Clear skies
    clear skies
  • 9 hours of bright sunshine9
    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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Keystone weather for Monday 1st December 2025

Expect broken clouds in Keystone, South Dakota with a maximum temperature of 0°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 11 kph from the west.

  • 0°C maximum temperature0
    °C maximum temperature
  • -10°C minimum temperature-10
    °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 cm of snow expected0
    cm of snow expected
  • -3°C wind chill-3
    °C wind chill
  • Light breeze of 11 kph from the West11
    kph wind from W

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

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