Santa Rosa Lake Weather Forecast

    • 76
    • 96

    Mostly Sunny

    • 76
    • 96

    Mostly Sunny

    • 76
    • 96

    Mostly Sunny

    • 77
    • 94

    Slight Chance Thunderstorms

    • 78
    • 94

    Chance Thunderstorms

    • 78
    • 95

    Slight Chance Thunderstorms

    • 78
    • 95

    Partly Sunny

Today 6 Jul Inland Willacy

Mostly sunny. Near steady temperature in the mid 90s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Heat index Values up to 108.

Tonight 6 Jul Inland Willacy

Mostly clear. Humid with Lows in the mid 70s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph, Diminishing to around 5 Mph after midnight. Heat index Values up to 105 early in the evening.

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Santa Rosa Lake Temperature Statistics

July Temperature

Harlingen, Rio Grande Valley International Airport (9.3 miles)

  • Lowest 3 July, 2026

    74.6 °F

  • Average July

    85.8 °F

  • Highest 4 July, 2026

    97 °F

Climate (2021–2026)

Harlingen, Rio Grande Valley International Airport (9.3 miles)

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  • Average Low 2021–2026

    65.7 °F

  • Average 2021–2026

    75.8 °F

  • Average High 2021–2026

    86.6 °F
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