Sinai, South Dakota | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Friday
    Thunderstorms
    54°
    Forecast night icon
    Night
    Thunderstorms
    49°
    Friday 4/26
    Day
    54°
    Thunderstorms
    Forecast day icon
    Night
    49°
    Thunderstorms
    Forecast night icon
    Hourly
    Day Details
    Showers with a chance of thunderstorms this morning then showers and thunderstorms likely this afternoon. Breezy cooler with highs in the upper 50s. Southeast winds 20 to 25 mph with gusts up to 40 mph. Chance of rain near 100 percent.
    Night Details
    Showers and thunderstorms in the evening then showers likely with a chance of thunderstorms after midnight. Lows in the upper 40s. East winds 15 to 20 mph with gusts up to 30 mph becoming north around 10 mph with gusts up to 20 mph after midnight. Chance of rain 90 percent.
  • Forecast day icon
    Saturday
    Cloudy
    53°
    Forecast night icon
    Night
    70% Chance Rain Showers
    44°
    Saturday 4/27
    Day
    53°
    Cloudy
    Forecast day icon
    Night
    44°
    70% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Cloudy. A slight chance of showers in the morning. Highs in the mid 50s. Northwest winds 10 to 15 mph. Chance of rain 20 percent.
    Night Details
    Cloudy. A slight chance of showers in the evening then showers likely after midnight. Lows in the lower 40s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 70 percent.
  • Forecast day icon
    Sunday
    Thunderstorms
    50°
    Forecast night icon
    Night
    70% Chance of Storms
    39°
    Sunday 4/28
    Day
    50°
    Thunderstorms
    Forecast day icon
    Night
    39°
    70% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Showers with a slight chance of thunderstorms. Breezy with highs in the lower 50s. Northeast winds 15 to 25 mph with gusts up to 35 mph. Chance of rain 90 percent.
    Night Details
    Showers likely with a slight chance of thunderstorms in the evening then a chance of showers after midnight. Lows in the upper 30s. Chance of rain 70 percent.
  • Forecast day icon
    Monday
    Partly Sunny
    54°
    Forecast night icon
    Night
    Partly Cloudy
    44°
    Monday 4/29
    Day
    54°
    Partly Sunny
    Forecast day icon
    Night
    44°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy in the morning then becoming partly sunny. Highs in the upper 50s.
    Night Details
    Partly cloudy. Lows in the lower 40s.
  • Forecast day icon
    Tuesday
    30% Chance Rain Showers
    65°
    Forecast night icon
    Night
    30% Chance Rain Showers
    44°
    Tuesday 4/30
    Day
    65°
    30% Chance Rain Showers
    Forecast day icon
    Night
    44°
    30% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. A chance of showers in the afternoon. Warmer with highs in the upper 60s. Chance of rain 30 percent.
    Night Details
    Mostly clear in the evening then becoming partly cloudy. A 30 percent chance of showers. Lows in the lower 40s.
  • Forecast day icon
    Wednesday
    30% Chance Rain Showers
    63°
    Forecast night icon
    Night
    Partly Cloudy
    45°
    Wednesday 5/1
    Day
    63°
    30% Chance Rain Showers
    Forecast day icon
    Night
    45°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. A chance of showers in the afternoon. Highs in the upper 60s. Chance of rain 30 percent.
    Night Details
    Mostly clear in the evening then becoming partly cloudy. Lows in the lower 40s.
  • Forecast day icon
    Thursday
    Mostly Sunny
    59°
    Forecast night icon
    Night
    Mostly Clear
    43°
    Thursday 5/2
    Day
    59°
    Mostly Sunny
    Forecast day icon
    Night
    43°
    Mostly Clear
    Forecast night icon
    Day Details
    Mostly sunny. Highs in the lower 60s.
    Night Details
    Mostly clear. Low temperature around 43F. Dew point will be around 37F with an average humidity of 66%. Winds will be 11 mph from the N.
  • Forecast day icon
    Friday
    Mostly Sunny
    62°
    Forecast night icon
    Night
    40% Chance of Rain
    50°
    Friday 5/3
    Day
    62°
    Mostly Sunny
    Forecast day icon
    Night
    50°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny. High temperature around 62F. Dew point will be around 42F with an average humidity of 66%. Winds will be 11 mph from the S.
    Night Details
    Partly cloudy with a chance of rain. Chance of precipitation 35%. Low temperature around 50F. Dew point will be around 46F with an average humidity of 71%. Winds will be 13 mph from the S.
  • Forecast day icon
    Saturday
    50% Chance of Rain
    61°
    Forecast night icon
    Night
    40% Chance of Rain
    49°
    Saturday 5/4
    Day
    61°
    50% Chance of Rain
    Forecast day icon
    Night
    49°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a chance of rain. Chance of precipitation 45%. High temperature around 61F. Dew point will be around 48F with an average humidity of 74%. Winds will be 12 mph from the S.
    Night Details
    Partly cloudy with a chance of rain. Chance of precipitation 40%. Low temperature around 49F. Dew point will be around 47F with an average humidity of 76%. Winds will be 6 mph from the S.
  • Forecast day icon
    Sunday
    40% Chance of Rain
    63°
    Forecast night icon
    Night
    40% Chance of Rain
    50°
    Sunday 5/5
    Day
    63°
    40% Chance of Rain
    Forecast day icon
    Night
    50°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Mostly cloudy with a chance of rain. Chance of precipitation 40%. High temperature around 63F. Dew point will be around 48F with an average humidity of 70%. Winds will be 4 mph from the S.
    Night Details
    Partly cloudy with a chance of rain. Chance of precipitation 35%. Low temperature around 50F. Dew point will be around 47F with an average humidity of 72%. Winds will be 4 mph from the S.