10-Day Weather Forecast - Port Isabel, TX

Sunny. Highs in the lower 90s. Southeast winds 15 to 20 mph.

Mostly clear in the evening then becoming partly cloudy. Humid with lows in the mid 70s. Southeast winds 10 to 15 mph with gusts up to 25 mph.

Sunny with highs in the lower 90s. Southeast winds 5 to 10 mph increasing to around 15 mph in the afternoon.

Mostly clear in the evening then becoming partly cloudy. Humid with lows in the upper 70s. Southeast winds 10 to 15 mph.

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

Partly cloudy. Lows in the upper 70s.

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

Partly cloudy. Lows in the upper 70s. Highs in the lower 90s. Heat index values up to 105.

Partly cloudy. Lows in the upper 70s. Highs in the lower 90s. Heat index values up to 105.

Mostly clear. Lows in the upper 70s. Highs in the lower 90s. Heat index values up to 105.

Mostly clear. Lows in the upper 70s. Highs in the lower 90s. Heat index values up to 105.

Partly cloudy. Lows in the upper 70s. Highs in the lower 90s. Heat index values up to 105.

Partly cloudy. Lows in the upper 70s. Highs in the lower 90s. Heat index values up to 105.

Clear with scattered thunderstorms. Chance of storms 35%. Low temperature around 81F. Dew point will be around 78F with an average humidity of 87%. Winds will be 11 mph from the SE.

Sunny with widely scattered thunderstorms. Chance of storms 30%. High temperature around 88F. Dew point will be around 78F with an average humidity of 79%. Winds will be 13 mph from the SE.

Clear. Low temperature around 80F. Dew point will be around 77F with an average humidity of 85%. Winds will be 10 mph from the SE.

Sunny. High temperature around 89F. Dew point will be around 77F with an average humidity of 76%. Winds will be 12 mph from the SE.

Clear with widely scattered thunderstorms. Chance of storms 30%. Low temperature around 80F. Dew point will be around 78F with an average humidity of 84%. Winds will be 10 mph from the SE.