10-Day Weather Forecast - Katy, TX

Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Humid with highs in the lower 90s. East winds around 5 mph. Chance of rain 50 percent. Heat index values up to 106.

Partly cloudy in the evening, then clearing. Humid with lows in the upper 70s. Southeast winds around 5 mph in the evening, becoming light and variable.

Mostly sunny. A chance of showers and thunderstorms in the afternoon. Humid with highs in the lower 90s. Northeast winds around 5 mph, becoming east in the afternoon. Chance of rain 50 percent. Heat index values up to 105.

Partly cloudy in the evening, then clearing. Lows in the upper 70s.

Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 50 percent. Heat index values up to 105.

Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 70s.

Sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 40 percent. Heat index values up to 105.

Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening.

Sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 40 percent. Heat index values up to 105.

Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 70s.

Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 50 percent. Heat index values up to 105.

Mostly clear with a 50% chance for rain and thunderstorms. Low temperature around 77F. Dew point will be around 78F with an average humidity of 94%. Winds will be 6 mph from the SE.

Partly cloudy with scattered thunderstorms. Chance of storms 50%. High temperature around 92F. Dew point will be around 77F with an average humidity of 74%. Winds will be 6 mph from the SE.

Mostly clear with a 50% chance for rain and thunderstorms. Low temperature around 77F. Dew point will be around 77F with an average humidity of 93%. Winds will be 7 mph from the S.

Mostly sunny with scattered thunderstorms. Chance of storms 45%. High temperature around 93F. Dew point will be around 77F with an average humidity of 74%. Winds will be 6 mph from the SE.

Partly cloudy with scattered thunderstorms. Chance of storms 50%. Low temperature around 77F. Dew point will be around 78F with an average humidity of 92%. Winds will be 7 mph from the S.

Sunny with scattered thunderstorms. Chance of storms 40%. High temperature around 93F. Dew point will be around 77F with an average humidity of 74%. Winds will be 8 mph from the SE.

Mostly clear with scattered thunderstorms. Chance of storms 45%. Low temperature around 77F. Dew point will be around 78F with an average humidity of 93%. Winds will be 7 mph from the SE.