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Blackwell Lake, SC Weather Forecast
Blackwell Lake, SC Weather Forecast Date: 408 PM EDT Tue Aug 18 2026
The area/counties/county of: York, including the cities of: Catawba and Rock Hill.or toggle through each period.
Tonight... Mostly clear. Lows in the lower 70s. North winds around 5 mph.
Wednesday... Sunny with highs in the lower 90s. North winds around 5 mph. Heat index values up to 100 in the afternoon.
Wednesday Night... Mostly clear. Lows in the lower 70s. Light and variable winds.
Thursday... Sunny, hot with highs in the mid 90s. Light and variable winds, becoming west around 5 mph in the afternoon. Heat index values up to 103.
Thursday Night... Partly cloudy with a chance of showers. Lows in the lower 70s. South winds around 5 mph in the evening, becoming light and variable. Chance of rain 40%.
Friday... Mostly sunny in the morning, then partly sunny with showers likely with a chance of thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 70%. Heat index values up to 100.
Friday Night... A chance of thunderstorms. Showers likely. Lows in the upper 60s. Chance of rain 70%.
Saturday... Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 30%.
Saturday Night... Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 30%.
Sunday... Sunny. Highs around 90.
Sunday Night... Mostly clear. Lows in the upper 60s.
Monday... Sunny. Highs in the upper 80s.
Monday Night... Mostly clear. Lows in the upper 60s.
POP = Probability of Precipitation
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