10-Day Weather Forecast - Port Arthur, TX

Sunny cooler with highs in the lower 60s. Northeast winds 5 to 10 mph becoming east in the afternoon.

Mostly clear. Lows in the upper 40s. Temperature rising into the lower 50s after midnight. Southeast winds around 5 mph.

Mostly sunny. Not as cool. More humid with highs in the lower 70s. South winds 10 to 15 mph.

Partly cloudy in the evening then becoming mostly cloudy. Not as cool with lows in the lower 60s. South winds 5 to 10 mph.

Partly sunny with a chance of showers. Highs in the mid 70s. Chance of rain 40 percent.

Mostly cloudy. Lows in the upper 50s. Highs around 70.

Mostly cloudy. Lows in the upper 50s. Highs around 70.

Partly cloudy. Lows in the upper 50s. Highs in the lower 70s.

Partly cloudy. Lows in the upper 50s. Highs in the lower 70s.

Partly cloudy. Lows in the upper 50s. Highs in the lower 70s.

Partly cloudy. Lows in the upper 50s. Highs in the lower 70s.

Partly cloudy. Low temperature around 62F. Dew point will be around 62F with an average humidity of 97%. Winds will be 6 mph from the SE.

Mostly sunny. High temperature around 71F. Dew point will be around 65F with an average humidity of 90%. Winds will be 7 mph from the S.

Clear. Low temperature around 63F. Dew point will be around 65F with an average humidity of 99%. Winds will be 6 mph from the S.

Sunny. High temperature around 71F. Dew point will be around 65F with an average humidity of 89%. Winds will be 6 mph from the S.

Clear. Low temperature around 63F. Dew point will be around 64F with an average humidity of 97%. Winds will be 5 mph from the S.

Sunny. High temperature around 71F. Dew point will be around 64F with an average humidity of 88%. Winds will be 7 mph from the S.

Clear. Low temperature around 62F. Dew point will be around 63F with an average humidity of 95%. Winds will be 5 mph from the SE.