Brown Lake Weather Forecast

    • 74
    • 101

    Hot

    • 75
    • 101

    Hot

    • 76
    • 101

    Hot

    • 75
    • 101

    Hot

    • 76
    • 102

    Hot

    • 75
    • 102

    Hot

Today 19 Sep La Salle

Partly cloudy in the Morning, then becoming sunny. Hot with Highs in the upper 90s.

Tonight 19 Sep La Salle

Mostly clear this Evening, then becoming partly cloudy. Lows in the mid 70s. Southeast Winds 10 to 15 Mph, Diminishing to 5 to 10 Mph after midnight.

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  • Temperature Real-Time

Brown Lake Temperature Statistics

September Temperature

Cotulla, Cotulla-La Salle County Airport (24.9 miles)

  • Lowest 6 September, 2026

    74.6 °F

  • Average September

    90.9 °F

  • Highest 3 September, 2026

    106.6 °F

Climate (2021–2026)

Cotulla, Cotulla-La Salle County Airport (24.9 miles)

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  • Average Low 2021–2026

    64.7 °F

  • Average 2021–2026

    76.4 °F

  • Average High 2021–2026

    88.6 °F
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