Port Arthur Reservoir Weather Forecast
- 78
- 93
Mostly Sunny
- 76
- 93
Slight Chance Thunderstorms
- 77
- 95
Mostly Sunny
- 78
- 95
Rain Showers Likely
- 78
- 91
Thunderstorms Likely
- 78
- 90
Thunderstorms Likely
Today 21 Jul Lower Jefferson
Sunny. Highs in the lower 90s. South Winds 5 to 10 Mph. Heat index Values up to 106.
Tonight 21 Jul Lower Jefferson
Mostly clear. Humid with Lows in the upper 70s. South Winds 5 to 10 Mph.
Port Arthur Reservoir Temperature Statistics
July Temperature
Beaumont/Port Arthur Southeast Texas Regional Airport (4.3 miles)
Lowest 9 July, 2025
70.6 °FAverage July
82.7 °FHighest 2 July, 2025
94.6 °F
Climate (2020–Present)
Beaumont/Port Arthur Southeast Texas Regional Airport (4.3 miles)
Average Low 2020–2025
62 °FAverage 2020–2025
70.4 °FAverage High 2020–2025
80.4 °F