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City of McKinney, TexasMcKinney, TX 7-Day Night Weather Forecast
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McKinney, TX Weather Forecast
McKinney, TX Weather Forecast Date: 608 PM CDT Sat Oct 10 2026
The area/counties/county of: Collin, including the cities of: Plano, Mckinney, Allen, and Frisco.or toggle through each period.
Tonight... Clear. Lows in the mid 60s. South winds 5 to 10 mph.
Sunday... Sunny. Highs around 90. Southwest winds 5 to 10 mph, becoming south 10 to 15 mph in the afternoon.
Sunday Night... Mostly clear. Lows in the upper 60s. South winds 5 to 10 mph.
Columbus Day... Sunny. Highs in the upper 80s. South winds 10 to 15 mph.
Monday Night... Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph.
Tuesday... Sunny. Highs in the lower 90s. Heat index values up to 105.
Tuesday Night... Mostly clear. Lows in the mid 70s.
Wednesday... Mostly sunny. Highs in the lower 90s.
Wednesday Night... Partly cloudy with a chance of showers. A chance of thunderstorms in the evening, then a slight chance of thunderstorms after midnight. Lows in the lower 70s. Chance of rain 40%.
Thursday... Mostly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50%.
Thursday Night... Partly cloudy with a slight chance of thunderstorms. A chance of showers. Lows in the mid 60s. Chance of rain 40%.
Friday... Partly sunny. A 30% chance of showers in the morning. Highs in the upper 70s.
Friday Night... Partly cloudy. Lows in the upper 50s.
POP = Probability of Precipitation
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