Santa Rosa Lake Weather Forecast

    • 76
    • 100

    Hot

    • 78
    • 100

    Hot

    • 78
    • 101

    Hot

    • 77
    • 101

    Hot

    • 76
    • 101

    Hot

    • 77
    • 101

    Hot

Today 18 Aug Inland Willacy

Sunny, hot. Near steady temperature in the upper 90s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Heat index Values up to 109.

Tonight 18 Aug Inland Willacy

Mostly clear in the Evening, then becoming partly cloudy. Humid with Lows in the mid 70s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Heat index Values up to 106 early in the evening.

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Santa Rosa Lake Temperature Statistics

August Temperature

Harlingen, Rio Grande Valley International Airport (9.3 miles)

  • Lowest 3 August, 2026

    73.7 °F

  • Average August

    89.5 °F

  • Highest 1 August, 2026

    102.7 °F

Climate (2021–2026)

Harlingen, Rio Grande Valley International Airport (9.3 miles)

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  • Average Low 2021–2026

    65.8 °F

  • Average 2021–2026

    76 °F

  • Average High 2021–2026

    86.8 °F
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