10-Day Weather Forecast - Keystone, SD

As of

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  • 38|34°F
    70% Chance of Snow

    Today

    38°F

    Cloudy with a chance of rain. Snow likely in the morning, then a chance of snow in the afternoon. Widespread fog in the morning. Areas of fog in the afternoon. Snow accumulation up to 1 inch. Highs in the upper 30s. East winds 5 to 10 mph. Chance of precipitation 70 percent.

    Tonight

    34°F

    Becoming partly cloudy. Widespread fog in the evening, then areas of fog after midnight. Lows around 30. South winds 5 to 10 mph. Gusts up to 20 mph after midnight.

    Hourly details
  • 61|36°F
    Partly Cloudy

    Day

    61°F

    Partly cloudy in the morning, then clearing. Highs in the mid 50s. Southwest winds 10 to 15 mph with gusts up to 40 mph.

    Night

    36°F

    Mostly clear. Lows in the lower 30s. West winds 5 to 10 mph. Gusts up to 30 mph, decreasing to 20 mph after midnight.

    Hourly details
  • 57|35°F
    Mostly Sunny

    Day

    57°F

    Mostly sunny. Highs in the upper 50s.

    Night

    35°F

    Mostly clear. Lows in the mid 30s.

    Hourly details
  • 60|37°F
    Mostly Sunny

    Day

    60°F

    Mostly sunny. Highs around 60.

    Night

    37°F

    Partly cloudy. Lows in the upper 30s.

    Hourly details
  • 60|37°F
    Partly Cloudy

    Day

    60°F

    Partly cloudy. Highs in the upper 50s.

    Night

    37°F

    Partly cloudy with a slight chance of rain in the evening, then mostly cloudy with a chance of rain after midnight. Lows in the upper 30s. Chance of rain 30 percent.

    Hourly details
  • 46|45°F
    30% Chance of Rain

    Day

    46°F

    Becoming partly cloudy. A 30 percent chance of rain. Highs in the lower 50s.

    Night

    45°F

    Partly cloudy. Lows in the upper 30s.

    Hourly details
  • 54|41°F
    Partly Cloudy

    Day

    54°F

    Partly cloudy. Highs in the mid 50s.

    Night

    41°F

    Partly cloudy. Low temperature around 41F. Dew point will be around 41F with an average humidity of 91%. Winds will be 7 mph from the S.

  • 66|37°F
    30% Chance of Rain

    Day

    66°F

    Cloudy with a slight chance of rain. Chance of precipitation 30%. High temperature around 66F. Dew point will be around 46F with an average humidity of 58%. Winds will be 9 mph from the SSW.

    Night

    37°F

    Cloudy with a chance of rain. Chance of precipitation 45%. Low temperature around 37F. Dew point will be around 26F with an average humidity of 82%. Winds will be 16 mph from the N.

  • 41|32°F
    50% Chance of Rain

    Day

    41°F

    Partly cloudy with a chance of rain. Chance of precipitation 45%. High temperature around 41F. Dew point will be around 25F with an average humidity of 49%. Winds will be 14 mph from the NW.

    Night

    32°F

    Mostly cloudy with a chance of rain-snow mix. Chance of precipitation 35%. Low temperature around 32F. Dew point will be around 18F with an average humidity of 58%. Winds will be 20 mph from the WNW.