Sinai, South Dakota | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Partly Cloudy
    49°
    Wednesday 4/24
    Forecast night icon
    49°
    Partly Cloudy
    Hourly
    Night Details
    Partly cloudy. Low temperature around 49F. Dew point will be around 33F with an average humidity of 53%. Winds will be 13 mph from the SE.
  • Forecast day icon
    Thursday
    Windy
    66°
    Forecast night icon
    Night
    Thunderstorms
    48°
    Thursday 4/25
    Day
    66°
    Windy
    Forecast day icon
    Night
    48°
    Thunderstorms
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. A slight chance of showers this afternoon. Windy with highs in the upper 60s. Southeast winds 15 to 25 mph becoming south 25 to 30 mph this afternoon. Chance of rain 20 percent.
    Night Details
    A chance of thunderstorms. Showers windy with lows in the upper 40s. Southeast winds 25 to 30 mph with gusts up to 40 mph. Chance of rain 90 percent.
  • Forecast day icon
    Friday
    Thunderstorms
    56°
    Forecast night icon
    Night
    Thunderstorms
    49°
    Friday 4/26
    Day
    56°
    Thunderstorms
    Forecast day icon
    Night
    49°
    Thunderstorms
    Forecast night icon
    Hourly
    Day Details
    A chance of thunderstorms. Showers windy with highs around 60. Southeast winds 20 to 30 mph with gusts up to 45 mph. Chance of rain near 100 percent.
    Night Details
    A chance of thunderstorms. Showers. Lows in the upper 40s. East winds 15 to 20 mph becoming northeast 10 to 15 mph after midnight. Chance of rain near 100 percent.
  • Forecast day icon
    Saturday
    Cloudy
    55°
    Forecast night icon
    Night
    50% Chance of Storms
    43°
    Saturday 4/27
    Day
    55°
    Cloudy
    Forecast day icon
    Night
    43°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Cloudy with a 20 percent chance of showers. Highs in the upper 50s. North winds around 15 mph.
    Night Details
    Cloudy. A slight chance of showers in the evening then a chance of showers with a slight chance of thunderstorms after midnight. Lows in the lower 40s. Chance of rain 50 percent.
  • Forecast day icon
    Sunday
    80% Chance Rain Showers
    47°
    Forecast night icon
    Night
    60% Chance Rain Showers
    38°
    Sunday 4/28
    Day
    47°
    80% Chance Rain Showers
    Forecast day icon
    Night
    38°
    60% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Showers. Highs around 50. Chance of rain 80 percent.
    Night Details
    Showers likely mainly in the evening. Lows in the upper 30s. Chance of rain 60 percent.
  • Forecast day icon
    Monday
    Partly Sunny
    54°
    Forecast night icon
    Night
    Partly Cloudy
    41°
    Monday 4/29
    Day
    54°
    Partly Sunny
    Forecast day icon
    Night
    41°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy in the morning then becoming partly sunny. Highs in the mid 50s.
    Night Details
    Partly cloudy in the evening then becoming mostly clear. Lows in the upper 30s.
  • Forecast day icon
    Tuesday
    Sunny
    73°
    Forecast night icon
    Night
    Mostly Clear
    50°
    Tuesday 4/30
    Day
    73°
    Sunny
    Forecast day icon
    Night
    50°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Much warmer with highs in the lower 70s.
    Night Details
    Mostly clear. Lows in the upper 40s.
  • Forecast day icon
    Wednesday
    Mostly Sunny
    69°
    Forecast night icon
    Night
    30% Chance of Rain
    49°
    Wednesday 5/1
    Day
    69°
    Mostly Sunny
    Forecast day icon
    Night
    49°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny. Highs in the mid 70s.
    Night Details
    Clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 49F. Dew point will be around 45F with an average humidity of 66%. Winds will be 4 mph from the E.
  • Forecast day icon
    Thursday
    30% Chance of Rain
    67°
    Forecast night icon
    Night
    30% Chance of Rain
    52°
    Thursday 5/2
    Day
    67°
    30% Chance of Rain
    Forecast day icon
    Night
    52°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny with a slight chance of rain. Chance of precipitation 30%. High temperature around 67F. Dew point will be around 46F with an average humidity of 63%. Winds will be 7 mph from the SE.
    Night Details
    Clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 52F. Dew point will be around 48F with an average humidity of 70%. Winds will be 9 mph from the SE.
  • Forecast day icon
    Friday
    30% Chance of Rain
    65°
    Forecast night icon
    Night
    40% Chance of Rain
    51°
    Friday 5/3
    Day
    65°
    30% Chance of Rain
    Forecast day icon
    Night
    51°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Partly cloudy with a slight chance of rain. Chance of precipitation 25%. High temperature around 65F. Dew point will be around 49F with an average humidity of 69%. Winds will be 11 mph from the SE.
    Night Details
    Cloudy with a chance of rain. Chance of precipitation 35%. Low temperature around 51F. Dew point will be around 49F with an average humidity of 73%. Winds will be 7 mph from the SE.