Harris Reservoir Weather Forecast

    • 77
    • 94

    Slight Chance Thunderstorms

    • 75
    • 91

    Chance Thunderstorms

    • 72
    • 93

    Mostly Sunny

    • 74
    • 93

    Mostly Sunny

    • 75
    • 93

    Chance Thunderstorms

    • 74
    • 92

    Chance Thunderstorms

Today 16 Sep Inland Brazoria

Mostly sunny. Hot. Near steady temperature in the lower 90s. East Winds around 10 Mph with Gusts up to 20 Mph. Heat index Values up to 106.

Tonight 16 Sep Inland Brazoria

Partly cloudy. A slight chance of Showers and Thunderstorms after midnight. Humid with Lows in the upper 70s. East Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harris Reservoir Temperature Statistics

September Temperature

Angleton / Lake Jackson, Brazoria County Airport (9.3 miles)

  • Lowest 5 September, 2026

    74.6 °F

  • Average September

    84.6 °F

  • Highest 3 September, 2026

    97.6 °F

Climate (2021–2026)

Angleton / Lake Jackson, Brazoria County Airport (9.3 miles)

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  • Average Low 2021–2026

    62.7 °F

  • Average 2021–2026

    72.1 °F

  • Average High 2021–2026

    81.9 °F
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