10-Day Weather Forecast - Katy, TX

Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Humid with highs in the lower 90s. Southeast winds 10 to 15 mph. Chance of rain 20 percent.

Partly cloudy. Humid with lows in the upper 70s. South winds 10 to 15 mph.

Mostly sunny. Humid with highs in the lower 90s. Southeast winds 10 to 15 mph.

Mostly clear. Humid with lows in the upper 70s. Southeast winds 10 to 15 mph.

Sunny. Highs in the lower 90s. Heat index values up to 105.

Mostly clear. Lows in the upper 70s.

Mostly sunny. Highs in the lower 90s. Heat index values up to 105.

Mostly clear in the evening then becoming partly cloudy. 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.

Partly cloudy. Lows in the upper 70s.

Partly sunny. A chance of showers and thunderstorms in the morning then showers and thunderstorms likely in the afternoon. Highs in the lower 90s. Chance of rain 60 percent. Heat index values up to 105.

A chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows in the upper 70s. Chance of rain 50 percent.

Mostly cloudy with a chance of thunderstorms. A chance of showers in the morning then showers likely in the afternoon. Highs around 90. Chance of rain 60 percent.

Partly cloudy with a 55% chance for rain and thunderstorms. Low temperature around 77F. Dew point will be around 72F with an average humidity of 79%. Winds will be 4 mph from the SE.

Partly cloudy with a 55% chance for rain and thunderstorms. High temperature around 88F. Dew point will be around 74F with an average humidity of 73%. Winds will be 6 mph from the S.

Mostly clear with a 50% chance for rain and thunderstorms. Low temperature around 78F. Dew point will be around 75F with an average humidity of 81%. Winds will be 8 mph from the S.

Partly cloudy with a 65% chance for rain and thunderstorms. High temperature around 90F. Dew point will be around 76F with an average humidity of 74%. Winds will be 11 mph from the S.

Clear with a 50% chance for rain and thunderstorms. Low temperature around 79F. Dew point will be around 76F with an average humidity of 80%. Winds will be 10 mph from the S.