Santa Rosa Lake Weather Forecast

    • 73
    • 103

    Hot

    • 75
    • 103

    Hot

    • 76
    • 100

    Hot

    • 76
    • 101

    Hot

    • 76
    • 100

    Hot

    • 77
    • 99

    Hot

Today 21 Jul Inland Willacy

Sunny, hot with Highs around 103. Southeast Winds 10 to 15 Mph. Heat index Values up to 111.

Tonight 21 Jul Inland Willacy

Mostly clear. Near steady temperature in the mid 70s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Santa Rosa Lake Temperature Statistics

July Temperature

Harlingen, Rio Grande Valley International Airport (9.3 miles)

  • Lowest 9 July, 2026

    73.7 °F

  • Average July

    86.4 °F

  • Highest 5 July, 2026

    98.7 °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

    75.9 °F

  • Average High 2021–2026

    86.7 °F
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