10-Day Weather Forecast - Sunnyvale, TX

Sunny, hot with highs around 100. South winds around 5 mph, becoming southeast this afternoon. Heat index values up to 107.

Clear. Lows in the upper 70s. South winds 5 to 10 mph.

Sunny, hot with highs around 100. Southeast winds 5 to 10 mph. Heat index values up to 107.

Mostly clear. Lows in the upper 70s. South winds around 5 mph.

Sunny, hot with highs around 100. South winds 5 to 10 mph. Heat index values up to 107.

Mostly clear. Lows in the upper 70s.

Sunny, hot with highs around 100. Heat index values up to 110 in the afternoon.

Mostly clear. Lows in the upper 70s.

Sunny, hot with highs around 100. Heat index values up to 110 in the afternoon.

Mostly clear. Lows in the upper 70s.

Sunny, hot with highs around 100. Heat index values up to 110 in the afternoon.

Mostly clear. Lows in the upper 70s.

Sunny, hot with highs around 100. Heat index values up to 110 in the afternoon.

Partly cloudy with widely scattered thunderstorms. Chance of storms 30%. Low temperature around 78F. Dew point will be around 72F with an average humidity of 62%. Winds will be 6 mph from the S.

Sunny. High temperature around 98F. Dew point will be around 72F with an average humidity of 59%. Winds will be 7 mph from the S.

Clear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 77F. Dew point will be around 72F with an average humidity of 66%. Winds will be 8 mph from the SE.

Mostly sunny with widely scattered thunderstorms. Chance of storms 25%. High temperature around 95F. Dew point will be around 74F with an average humidity of 63%. Winds will be 9 mph from the S.

Partly cloudy with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 76F. Dew point will be around 73F with an average humidity of 71%. Winds will be 9 mph from the SE.