10-Day Weather Forecast - Port Isabel, TX

Mostly sunny. Highs in the mid 70s. Northeast winds 5 to 10 mph.

Mostly clear. Patchy fog. Lows in the lower 60s. Southeast winds around 5 mph.

Sunny. Highs around 80.

Mostly clear. Lows in the mid 60s.

Mostly sunny. Highs in the lower 80s.

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 60s.

Mostly sunny. Highs in the upper 70s.

Mostly clear. Patchy fog after midnight. Lows in the mid 60s.

Patchy fog in the morning. Sunny. Highs in the upper 70s.

Mostly clear. Patchy fog after midnight. Lows in the mid 60s.

Mostly sunny. Highs in the upper 70s.

Mostly clear. Low temperature around 66F. Dew point will be around 66F with an average humidity of 93%. Winds will be 6 mph from the SE.

Mostly sunny. High temperature around 76F. Dew point will be around 68F with an average humidity of 86%. Winds will be 9 mph from the SE.

Clear. Low temperature around 66F. Dew point will be around 67F with an average humidity of 93%. Winds will be 7 mph from the SE.

Sunny. High temperature around 76F. Dew point will be around 68F with an average humidity of 85%. Winds will be 9 mph from the SE.

Clear. Low temperature around 67F. Dew point will be around 67F with an average humidity of 93%. Winds will be 8 mph from the SE.

Sunny. High temperature around 76F. Dew point will be around 68F with an average humidity of 85%. Winds will be 9 mph from the SE.

Clear. Low temperature around 65F. Dew point will be around 65F with an average humidity of 91%. Winds will be 6 mph from the SE.