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City of Katy, TXKaty, TX 7-Day Night Weather Forecast
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Katy, TX Weather Forecast
Katy, TX Weather Forecast Date: 122 AM CDT Fri Sep 11 2026
The area/counties/county of: Inland Harris, including the city of Houston.or toggle through each period.
Rest of Tonight... Partly cloudy. Near steady temperature in the upper 70s. South winds around 5 mph.
Friday... Partly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Humid with highs in the lower 90s. South winds 5 to 10 mph. Chance of rain 50%. Heat index values up to 107.
Friday Night... Mostly cloudy with a chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Humid with lows in the upper 70s. South winds 5 to 10 mph. Chance of rain 30%.
Saturday... Mostly sunny. A chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. South winds 5 to 10 mph. Chance of rain 40%. Heat index values up to 109.
Saturday Night... Partly cloudy. Humid with lows in the upper 70s. South winds 5 to 10 mph.
Sunday... Mostly sunny with a chance of showers and thunderstorms. Highs in the mid 90s. Chance of rain 50%. Heat index values up to 110.
Sunday Night... Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 70s.
Monday... Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 40%. Heat index values up to 110.
Monday Night... Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening.
Tuesday... Mostly sunny. Highs in the mid 90s. Heat index values up to 105.
Tuesday Night... Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 70s.
Wednesday... Mostly sunny. Highs in the lower 90s. Heat index values up to 105.
Wednesday Night... Partly cloudy. Lows in the upper 70s.
POP = Probability of Precipitation
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