Sinai, South Dakota | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Mostly Clear
    47°
    Friday 5/10
    Forecast night icon
    47°
    Mostly Clear
    Hourly
    Night Details
    Mostly clear. Lows in the mid 40s. Northwest winds 15 to 20 mph with gusts up to 30 mph diminishing to around 5 mph after midnight.
  • Forecast day icon
    Saturday
    Sunny
    75°
    Forecast night icon
    Night
    Partly Cloudy
    54°
    Saturday 5/11
    Day
    75°
    Sunny
    Forecast day icon
    Night
    54°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the upper 70s. West winds 10 to 15 mph.
    Night Details
    Partly cloudy. Lows in the lower 50s. Southwest winds 5 to 10 mph.
  • Forecast day icon
    Sunday
    Mostly Sunny
    79°
    Forecast night icon
    Night
    Partly Cloudy
    50°
    Sunday 5/12
    Day
    79°
    Mostly Sunny
    Forecast day icon
    Night
    50°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Southwest winds 5 to 10 mph becoming northwest in the afternoon. Chance of rain 20 percent.
    Night Details
    Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 40s. Northeast winds around 10 mph. Chance of rain 20 percent.
  • Forecast day icon
    Monday
    Sunny
    69°
    Forecast night icon
    Night
    Mostly Clear
    47°
    Monday 5/13
    Day
    69°
    Sunny
    Forecast day icon
    Night
    47°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Not as warm with highs in the upper 60s.
    Night Details
    Mostly clear. Lows in the mid 40s.
  • Forecast day icon
    Tuesday
    30% Chance Rain Showers
    70°
    Forecast night icon
    Night
    50% Chance Rain Showers
    54°
    Tuesday 5/14
    Day
    70°
    30% Chance Rain Showers
    Forecast day icon
    Night
    54°
    50% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. A chance of showers in the afternoon. Highs in the lower 70s. Chance of rain 30 percent.
    Night Details
    Mostly cloudy with a chance of showers. Lows in the lower 50s. Chance of rain 50 percent.
  • Forecast day icon
    Wednesday
    50% Chance of Storms
    66°
    Forecast night icon
    Night
    50% Chance of Storms
    49°
    Wednesday 5/15
    Day
    66°
    50% Chance of Storms
    Forecast day icon
    Night
    49°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 50 percent.
    Night Details
    Mostly cloudy in the evening then becoming partly cloudy. A chance of thunderstorms in the evening. A chance of showers. Lows in the upper 40s. Chance of rain 50 percent.
  • Forecast day icon
    Thursday
    30% Chance Rain Showers
    64°
    Forecast night icon
    Night
    Partly Cloudy
    47°
    Thursday 5/16
    Day
    64°
    30% Chance Rain Showers
    Forecast day icon
    Night
    47°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. A chance of showers in the afternoon. Highs in the mid 60s. Chance of rain 30 percent.
    Night Details
    Partly cloudy. Lows in the mid 40s.
  • Forecast day icon
    Friday
    Mostly Sunny
    64°
    Forecast night icon
    Night
    30% Chance of Rain
    47°
    Friday 5/17
    Day
    64°
    Mostly Sunny
    Forecast day icon
    Night
    47°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny. Highs in the upper 60s.
    Night Details
    Partly cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 47F. Dew point will be around 39F with an average humidity of 58%. Winds will be 8 mph from the NW.
  • Forecast day icon
    Saturday
    30% Chance of Rain
    65°
    Forecast night icon
    Night
    30% Chance of Rain
    45°
    Saturday 5/18
    Day
    65°
    30% Chance of Rain
    Forecast day icon
    Night
    45°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 65F. Dew point will be around 40F with an average humidity of 54%. Winds will be 13 mph from the NW.
    Night Details
    Mostly clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 45F. Dew point will be around 38F with an average humidity of 56%. Winds will be 9 mph from the NW.
  • Forecast day icon
    Sunday
    Sunny
    66°
    Forecast night icon
    Night
    Clear
    46°
    Sunday 5/19
    Day
    66°
    Sunny
    Forecast day icon
    Night
    46°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 66F. Dew point will be around 37F with an average humidity of 50%. Winds will be 10 mph from the NW.
    Night Details
    Clear. Low temperature around 46F. Dew point will be around 37F with an average humidity of 53%. Winds will be 4 mph from the NW.