Charles R Johnson Airport Weather Forecast

    • 80
    • 89

    Mostly Sunny

    • 80
    • 89

    Mostly Sunny

    • 80
    • 89

    Slight Chance Thunderstorms

    • 80
    • 89

    Slight Chance Thunderstorms

    • 80
    • 90

    Sunny

    • 80
    • 90

    Sunny

    • 81
    • 90

    Mostly Sunny

Today 3 Aug Coastal Willacy

Sunny. Highs in the mid 90s. South Winds around 5 Mph, increasing to southeast 10 to 15 Mph this afternoon. Heat index Values up to 111.

Tonight 3 Aug Coastal Willacy

Mostly clear. Lows in the upper 70s. Southeast Winds 10 to 15 Mph.

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Charles R Johnson Airport Temperature Statistics

August Temperature

Harlingen, Rio Grande Valley International Airport (26.1 miles)

  • Lowest 1 August, 2025

    75 °F

  • Average August

    85.9 °F

  • Highest 1 August, 2025

    100.9 °F

Climate (2020–Present)

Harlingen, Rio Grande Valley International Airport (26.1 miles)

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  • Average Low 2020–2025

    65.4 °F

  • Average 2020–2025

    75.2 °F

  • Average High 2020–2025

    86 °F
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