Keystone weather live forecast

Today's maximum temperature in Keystone is expected to be 37°F. Select a day from the live weather forecast for Keystone, South Dakota, USA for more weather parameters.

5-day weather forecast updated at 04:04 on Friday 28th November 2025 GMT

More about Keystone

Keystone by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for South Dakota

Momondo: Compare latest car hire deals

  • Search & compare the best car hire deals
  • Free 48-hour cancellation policy & no hidden charges
  • Check prices with Avis, Europcar, Sixt & more
Go to Momondo deal >>

View all Momondo offers

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 28th November 2025

Expect mostly cloudy with light snow in Keystone, South Dakota with a maximum temperature of 37°F, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 2-5 cm of snow expected with 88% chance of some snow and a gentle breeze of 9 mph from the north.

  • 37°F maximum temperature37
    °F maximum temperature
  • 21°F minimum temperature21
    °F 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)
  • 88% chance of some snow88
    % chance of some snow
  • 2-5 cm of snow expected<5
    cm of snow expected
  • 30°F wind chill30
    °F wind chill
  • Gentle breeze of 9 mph from the North9
    mph wind from N

Back to top

Keystone weather for Saturday 29th November 2025

Expect clear skies with flurries of snow in Keystone, South Dakota with a maximum temperature of 21°F, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 2-5 cm of snow expected with 24% chance of some snow and a moderate breeze of 13 mph from the north.

  • 21°F maximum temperature21
    °F maximum temperature
  • 7°F minimum temperature7
    °F minimum temperature
  • Clear skies with flurries of snow
    clear skies with flurries of snow
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 24% chance of some snow24
    % chance of some snow
  • 2-5 cm of snow expected<5
    cm of snow expected
  • 7°F wind chill7
    °F wind chill
  • Moderate breeze of 13 mph from the North13
    mph wind from N

Back to top

Keystone weather for Sunday 30th November 2025

Expect clear skies in Keystone, South Dakota with a maximum temperature of 21°F, maximum UV of 1 (Low) and 9 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 5 mph from the south-west.

  • 21°F maximum temperature21
    °F maximum temperature
  • 5°F minimum temperature5
    °F 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
  • 14°F wind chill14
    °F wind chill
  • Light breeze of 5 mph from the South-West5
    mph wind from SW

Back to top

Keystone weather for Monday 1st December 2025

Expect broken clouds in Keystone, South Dakota with a maximum temperature of 36°F, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 mph from the west.

  • 36°F maximum temperature36
    °F maximum temperature
  • 14°F minimum temperature14
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 28°F wind chill28
    °F wind chill
  • Light breeze of 7 mph from the West7
    mph wind from W

Back to top

Keystone weather for Tuesday 2nd December 2025

Expect clear skies with flurries of snow in Keystone, South Dakota with a maximum temperature of 39°F, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 2-5 cm of snow expected with 44% chance of some snow and a light breeze of 7 mph from the north-west.

  • 39°F maximum temperature39
    °F maximum temperature
  • 28°F minimum temperature28
    °F minimum temperature
  • Clear skies with flurries of snow
    clear skies with flurries of snow
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 44% chance of some snow44
    % chance of some snow
  • 2-5 cm of snow expected<5
    cm of snow expected
  • 34°F wind chill34
    °F wind chill
  • Light breeze of 7 mph from the North-West7
    mph wind from NW

Back to top

International Drivers Association: Driving permit plans from £37

  • Check out International driving permit plans from only £37
  • Choose from print + digital & digtial only permits
  • Valid for up to 3 years & use in over 150 countries
Go to International Drivers Association deal >>

Metric (°C)  |  Imperial (°F)

Back to top

More about the USA

Related posts

Popular travel offers

Explore holiday destinations

More holidays

Save with latest deals & discounts

More deals

Airport parking

More parking

Airport lounges

More lounges

Top ^