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Roy Lake, SD 7-Day Night Weather Forecast
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Roy Lake, SD Weather Forecast
Roy Lake, SD Weather Forecast Date: 1207 PM CDT Sat Aug 29 2026
The area/counties/county of: Marshall, including the city of Britton.or toggle through each period.
This Afternoon... Partly sunny. Highs in the lower 80s. East winds 5 to 10 mph with gusts up to 20 mph.
Tonight... Mostly cloudy. Showers likely with a slight chance of thunderstorms after midnight. Humid with lows in the mid 60s. East winds 5 to 10 mph. Chance of rain 70%.
Sunday... Partly sunny. A slight chance of thunderstorms in the morning. Humid with highs in the lower 80s. East winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20%.
Sunday Night... Partly cloudy with a chance of thunderstorms in the evening, then mostly cloudy after midnight. Humid with lows in the lower 60s. Southeast winds around 10 mph, becoming west after midnight. Chance of rain 50%.
Monday... Partly sunny. Highs around 80. Northwest winds 5 to 10 mph.
Monday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s.
Tuesday... Partly sunny. A slight chance of showers in the afternoon. Highs around 80. Chance of rain 20%.
Tuesday Night... Mostly cloudy with a slight chance of thunderstorms in the evening, then partly cloudy with a slight chance of showers after midnight. Lows around 60. Chance of rain 20%.
Wednesday... Mostly sunny. Highs in the lower 80s.
Wednesday Night... Mostly clear in the evening, then becoming mostly cloudy. A 20% chance of thunderstorms. Lows in the mid 60s.
Thursday... Partly sunny. Highs in the mid 80s.
Thursday Night... Mostly clear in the evening, then becoming partly cloudy. A 20% chance of showers. Lows in the mid 60s.
POP = Probability of Precipitation
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