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Keystone weather live forecast
Tomorrow's maximum temperature in Keystone is expected to be 21°C.
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Monday
5th May -
Tuesday
6th May -
Wednesday
7th May -
Thursday
8th May -
Friday
9th May
5-day weather forecast updated at 04:03 on Monday 5th May 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 Monday 5th May 2025
Expect sunshine and showers in Keystone, South Dakota with a maximum temperature of 21°C, maximum UV of 7 (High) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 95% chance of some rain and a gentle breeze of 15 kph from the south-west.
- °C maximum temperature
- °C minimum temperature
- sunshine and showers
- hours of sunshine
- UV index (High)
- % chance of some rain
- mm of rainfall expected
- no heat & humidity
- kph wind from SW
Keystone weather for Tuesday 6th May 2025
Expect mostly cloudy with light rain in Keystone, South Dakota with a maximum temperature of 14°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 51% chance of some rain and a gentle breeze of 15 kph from the north.
- °C maximum temperature
- °C minimum temperature
- mostly cloudy with light rain
- hours of sunshine
- UV index (Moderate)
- % chance of some rain
- mm of rainfall expected
- °C wind chill
- kph wind from N
Keystone weather for Wednesday 7th May 2025
Expect broken clouds in Keystone, South Dakota with a maximum temperature of 16°C, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south-east.
- °C maximum temperature
- °C minimum temperature
- broken clouds
- hours of sunshine
- UV index (High)
- mm of rainfall expected
- no heat & humidity
- kph wind from SE
Keystone weather for Thursday 8th May 2025
Expect clear skies in Keystone, South Dakota with a maximum temperature of 20°C, maximum UV of 8 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south.
- °C maximum temperature
- °C minimum temperature
- clear skies
- hours of sunshine
- UV index (Very High)
- mm of rainfall expected
- °C wind chill
- kph wind from S
Keystone weather for Friday 9th May 2025
Expect scattered clouds in Keystone, South Dakota with a maximum temperature of 21°C, maximum UV of 8 (Very High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north.
- °C maximum temperature
- °C minimum temperature
- scattered clouds
- hours of sunshine
- UV index (Very High)
- mm of rainfall expected
- °C wind chill
- kph wind from N
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Metric (°C / mm) | Imperial (°F / inches)
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