Sinai, South Dakota | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Tuesday
    Mostly Sunny
    59°
    Forecast night icon
    Night
    Mostly Clear
    35°
    Tuesday 4/23
    Day
    59°
    Mostly Sunny
    Forecast day icon
    Night
    35°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. A chance of sprinkles late this morning. Breezy with highs in the upper 50s. Northwest winds 20 to 25 mph with gusts up to 40 mph.
    Night Details
    Mostly clear. Widespread frost after midnight. Lows in the lower 30s. North winds 15 to 20 mph becoming east around 5 mph after midnight.
  • Forecast day icon
    Wednesday
    Sunny
    63°
    Forecast night icon
    Night
    Mostly Cloudy
    48°
    Wednesday 4/24
    Day
    63°
    Sunny
    Forecast day icon
    Night
    48°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Widespread frost in the morning. Sunny. Highs in the lower 60s. South winds 5 to 10 mph.
    Night Details
    Mostly cloudy. Not as cool with lows in the mid 40s. Southeast winds 10 to 15 mph. Gusts up to 30 mph after midnight.
  • Forecast day icon
    Thursday
    Windy
    67°
    Forecast night icon
    Night
    70% Chance of Storms
    51°
    Thursday 4/25
    Day
    67°
    Windy
    Forecast day icon
    Night
    51°
    70% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. A slight chance of showers in the afternoon. Windy with highs in the upper 60s. South winds 20 to 30 mph with gusts up to 40 mph. Chance of rain 20 percent.
    Night Details
    Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening then showers likely after midnight. Windy with lows around 50. Chance of rain 70 percent.
  • Forecast day icon
    Friday
    Thunderstorms
    63°
    Forecast night icon
    Night
    Thunderstorms
    51°
    Friday 4/26
    Day
    63°
    Thunderstorms
    Forecast day icon
    Night
    51°
    Thunderstorms
    Forecast night icon
    Hourly
    Day Details
    Showers with a chance of thunderstorms. Breezy with highs in the mid 60s. Chance of rain 90 percent.
    Night Details
    Showers with a chance of thunderstorms in the evening then showers likely after midnight. Lows in the upper 40s. Chance of rain 90 percent.
  • Forecast day icon
    Saturday
    50% Chance Rain Showers
    57°
    Forecast night icon
    Night
    40% Chance Rain Showers
    43°
    Saturday 4/27
    Day
    57°
    50% Chance Rain Showers
    Forecast day icon
    Night
    43°
    40% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with a 50 percent chance of showers. Highs in the upper 50s.
    Night Details
    Mostly cloudy. A chance of showers after midnight. Lows around 40. Chance of rain 40 percent.
  • Forecast day icon
    Sunday
    60% Chance Rain Showers
    48°
    Forecast night icon
    Night
    30% Chance Rain Showers
    37°
    Sunday 4/28
    Day
    48°
    60% Chance Rain Showers
    Forecast day icon
    Night
    37°
    30% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Showers likely. Highs in the lower 50s. Chance of rain 60 percent.
    Night Details
    Mostly cloudy. A chance of showers in the evening. Lows in the mid 30s. Chance of rain 30 percent.
  • Forecast day icon
    Monday
    Mostly Sunny
    54°
    Forecast night icon
    Night
    Partly Cloudy
    41°
    Monday 4/29
    Day
    54°
    Mostly Sunny
    Forecast day icon
    Night
    41°
    Partly Cloudy
    Forecast night icon
    Day Details
    Mostly sunny. Highs around 60.
    Night Details
    Partly cloudy. Low temperature around 41F. Dew point will be around 38F with an average humidity of 72%. Winds will be 7 mph from the NW.
  • Forecast day icon
    Tuesday
    Sunny
    66°
    Forecast night icon
    Night
    30% Chance of Rain
    46°
    Tuesday 4/30
    Day
    66°
    Sunny
    Forecast day icon
    Night
    46°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Sunny. High temperature around 66F. Dew point will be around 42F with an average humidity of 62%. Winds will be 3 mph from the SW.
    Night Details
    Clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 46F. Dew point will be around 42F with an average humidity of 65%. Winds will be 2 mph from the SE.
  • Forecast day icon
    Wednesday
    30% Chance of Rain
    65°
    Forecast night icon
    Night
    30% Chance of Rain
    45°
    Wednesday 5/1
    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 42F with an average humidity of 59%. Winds will be 3 mph from the NW.
    Night Details
    Clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 45F. Dew point will be around 40F with an average humidity of 61%. Winds will be 2 mph from the E.
  • Forecast day icon
    Thursday
    Sunny
    63°
    Forecast night icon
    Night
    30% Chance of Rain
    46°
    Thursday 5/2
    Day
    63°
    Sunny
    Forecast day icon
    Night
    46°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Sunny. High temperature around 63F. Dew point will be around 42F with an average humidity of 61%. Winds will be 3 mph from the N.
    Night Details
    Clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 46F. Dew point will be around 41F with an average humidity of 63%. Winds will be 3 mph from the E.