Keystone, South Dakota | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Mostly Cloudy
    48°
    Thursday 4/25
    Forecast night icon
    48°
    Mostly Cloudy
    Hourly
    Night Details
    Mostly cloudy. A slight chance of showers and thunderstorms this evening. Some thunderstorms may be severe. Lows in the lower 40s. Northwest winds 5 to 10 mph. Gusts up to 20 mph. Chance of rain 20 percent.
  • Forecast day icon
    Friday
    70% Chance of Storms
    54°
    Forecast night icon
    Night
    70% Chance of Storms
    43°
    Friday 4/26
    Day
    54°
    70% Chance of Storms
    Forecast day icon
    Night
    43°
    70% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Cloudy. A chance of rain showers with a slight chance of thunderstorms in the morning then rain showers likely with a chance of thunderstorms in the afternoon. Highs in the mid 50s. North winds 10 to 20 mph with gusts up to 30 mph. Chance of rain 70 percent.
    Night Details
    Mostly cloudy. Rain showers likely with a chance of thunderstorms in the evening then a chance of rain showers after midnight. Lows in the upper 30s. North winds 10 to 20 mph with gusts up to 30 mph. Chance of rain 70 percent.
  • Forecast day icon
    Saturday
    Snow Showers
    43°
    Forecast night icon
    Night
    80% Chance Snow Showers
    38°
    Saturday 4/27
    Day
    43°
    Snow Showers
    Forecast day icon
    Night
    38°
    80% Chance Snow Showers
    Forecast night icon
    Hourly
    Day Details
    Rain showers. A slight chance of snow showers in the afternoon. Highs in the mid 40s. Northeast winds 10 to 20 mph with gusts up to 30 mph. Chance of precipitation 90 percent.
    Night Details
    Snow showers likely. Rain showers. Little or no snow accumulation. Lows in the lower 30s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of precipitation 80 percent.
  • Forecast day icon
    Sunday
    70% Chance Frozen Mix
    44°
    Forecast night icon
    Night
    Partly Cloudy
    37°
    Sunday 4/28
    Day
    44°
    70% Chance Frozen Mix
    Forecast day icon
    Night
    37°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy. Rain showers and snow showers likely in the morning then a chance of rain showers with a slight chance of snow showers in the afternoon. Little or no snow accumulation. Highs in the mid 40s. Chance of precipitation 70 percent.
    Night Details
    Partly cloudy in the evening then clearing. Lows in the lower 30s.
  • Forecast day icon
    Monday
    40% Chance of Storms
    60°
    Forecast night icon
    Night
    30% Chance of Storms
    42°
    Monday 4/29
    Day
    60°
    40% Chance of Storms
    Forecast day icon
    Night
    42°
    30% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny in the morning then partly cloudy with a chance of rain showers with a slight chance of thunderstorms in the afternoon. Highs around 60. Chance of rain 40 percent.
    Night Details
    Partly cloudy with a chance of rain showers with a slight chance of thunderstorms in the evening then mostly clear with a slight chance of rain showers after midnight. Lows in the mid 30s. Chance of rain 30 percent.
  • Forecast day icon
    Tuesday
    Mostly Sunny
    60°
    Forecast night icon
    Night
    Partly Cloudy
    40°
    Tuesday 4/30
    Day
    60°
    Mostly Sunny
    Forecast day icon
    Night
    40°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny with a 20 percent chance of rain showers. Highs in the upper 50s.
    Night Details
    Partly cloudy with a slight chance of rain showers in the evening then mostly clear after midnight. Lows in the upper 30s. Chance of rain 20 percent.
  • Forecast day icon
    Wednesday
    Mostly Sunny
    62°
    Forecast night icon
    Night
    Mostly Clear
    40°
    Wednesday 5/1
    Day
    62°
    Mostly Sunny
    Forecast day icon
    Night
    40°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. A slight chance of rain showers in the afternoon. Highs in the lower 60s. Chance of rain 20 percent.
    Night Details
    Mostly clear with a 20 percent chance of showers. Lows in the lower 40s.
  • Forecast day icon
    Thursday
    30% Chance of Storms
    58°
    Forecast night icon
    Night
    40% Chance of Rain
    46°
    Thursday 5/2
    Day
    58°
    30% Chance of Storms
    Forecast day icon
    Night
    46°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Partly cloudy. A chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 30 percent.
    Night Details
    Mostly clear with a chance of rain. Chance of precipitation 40%. Low temperature around 46F. Dew point will be around 38F with an average humidity of 66%. Winds will be 6 mph from the SW.
  • Forecast day icon
    Friday
    40% Chance of Rain
    62°
    Forecast night icon
    Night
    50% Chance of Rain
    47°
    Friday 5/3
    Day
    62°
    40% Chance of Rain
    Forecast day icon
    Night
    47°
    50% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny with a chance of rain. Chance of precipitation 35%. High temperature around 62F. Dew point will be around 40F with an average humidity of 55%. Winds will be 5 mph from the S.
    Night Details
    Partly cloudy with a chance of rain. Chance of precipitation 45%. Low temperature around 47F. Dew point will be around 38F with an average humidity of 57%. Winds will be 5 mph from the W.
  • Forecast day icon
    Saturday
    40% Chance of Rain
    62°
    Forecast night icon
    Night
    40% Chance of Rain
    46°
    Saturday 5/4
    Day
    62°
    40% Chance of Rain
    Forecast day icon
    Night
    46°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny with a chance of rain. Chance of precipitation 40%. High temperature around 62F. Dew point will be around 37F with an average humidity of 48%. Winds will be 4 mph from the W.
    Night Details
    Mostly clear with a chance of rain. Chance of precipitation 35%. Low temperature around 46F. Dew point will be around 35F with an average humidity of 55%. Winds will be 5 mph from the W.