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Sinai, SD 7-Day Night Weather Forecast
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Sinai, SD Weather Forecast
Sinai, SD Weather Forecast Date: 824 AM CDT Sat Aug 01 2026
The area/counties/county of: Brookings, including the city of Brookings.or toggle through each period.
Rest of Today... Patchy fog early this morning. Mostly sunny. Highs in the upper 70s. North winds 5 to 10 mph with gusts up to 20 mph.
Tonight... Partly cloudy. Lows in the upper 50s. Northeast winds around 5 mph, becoming southeast after midnight.
Sunday... Mostly sunny. Humid with highs around 80. South winds 15 to 20 mph.
Sunday Night... Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the lower 60s. South winds 15 to 20 mph with gusts up to 30 mph.
Monday... Mostly sunny and breezy with highs in the lower 80s. South winds 20 to 25 mph with gusts up to 35 mph.
Monday Night... Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows around 60. Chance of rain 60%.
Tuesday... Mostly cloudy with a chance of showers in the morning, then partly sunny in the afternoon. Highs in the lower 70s. Chance of rain 50%.
Tuesday Night... Partly cloudy in the evening, then clearing. Lows in the lower 50s.
Wednesday... Mostly sunny. Highs in the lower 70s.
Wednesday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 50s.
Thursday... Partly sunny in the morning, then clearing. Highs in the upper 70s.
Thursday Night... Mostly clear in the evening, then becoming partly cloudy. Lows around 60.
POP = Probability of Precipitation
Sinai Radar Loop
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