Charles R Johnson Airport Weather Forecast

    • 83
    • 90

    Breezy

    • 81
    • 90

    Chance Thunderstorms

    • 79
    • 87

    Rain Showers

    • 76
    • 85

    Rain Showers

    • 76
    • 84

    Rain Showers

    • 75
    • 83

    Rain Showers Likely

Today 30 Sep Coastal Willacy

Mostly sunny. Humid with Highs in the mid 90s. Southeast Winds 15 to 20 Mph with Gusts up to 30 Mph. Heat index Values up to 115.

Tonight 30 Sep Coastal Willacy

Partly cloudy. Humid with Lows around 80. Southeast Winds 15 to 20 Mph with Gusts up to 30 Mph. Heat index Values up to 108 early.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Charles R Johnson Airport Temperature Statistics

September Temperature

Harlingen, Rio Grande Valley International Airport (26.1 miles)

  • Lowest 20 September, 2026

    71.7 °F

  • Average September

    88.8 °F

  • Highest 2 September, 2026

    104.6 °F

Climate (2021–2026)

Harlingen, Rio Grande Valley International Airport (26.1 miles)

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  • Average Low 2021–2026

    65.9 °F

  • Average 2021–2026

    76.1 °F

  • Average High 2021–2026

    87 °F
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