10-Day Weather Forecast - Port Isabel, TX

Sunny. Highs in the mid 70s. Southwest winds around 5 mph becoming south in the afternoon.

Mostly clear. Lows in the lower 50s. South winds 5 to 10 mph.

Sunny. Highs in the mid 70s. South winds around 5 mph becoming southeast in the afternoon.

Mostly clear. Lows in the mid 50s. Southeast winds 5 to 10 mph.

Mostly sunny. Highs in the mid 70s.

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 50s.

Partly sunny. Highs in the upper 70s.

Mostly cloudy. Lows in the lower 60s.

Mostly cloudy in the morning then becoming partly sunny. Highs in the upper 70s.

Partly cloudy. Lows in the lower 60s.

Mostly sunny. Highs in the upper 70s.

Mostly clear. Lows in the lower 60s.

Mostly sunny. Highs in the upper 70s.

Clear. Low temperature around 67F. Dew point will be around 66F with an average humidity of 93%. Winds will be 10 mph from the SE.

Partly cloudy. High temperature around 75F. Dew point will be around 64F with an average humidity of 75%. Winds will be 6 mph from the S.

Clear. Low temperature around 64F. Dew point will be around 60F with an average humidity of 79%. Winds will be 2 mph from the SE.

Sunny. High temperature around 74F. Dew point will be around 58F with an average humidity of 64%. Winds will be 5 mph from the E.

Clear. Low temperature around 64F. Dew point will be around 59F with an average humidity of 80%. Winds will be 5 mph from the E.