Charles R Johnson Airport Weather Forecast

    • 67
    • 77

    Partly Sunny

    • 67
    • 75

    Mostly Cloudy

    • 66
    • 75

    Partly Sunny

    • 67
    • 75

    Mostly Sunny

    • 67
    • 75

    Mostly Sunny

    • 67
    • 76

    Partly Sunny

Today 21 Dec Coastal Willacy

Mostly sunny. Highs in the lower 80s. South Winds 5 to 10 Mph.

Tonight 21 Dec Coastal Willacy

Partly cloudy in the Evening, then becoming mostly cloudy. Areas of fog after midnight. Lows in the mid 60s. Southeast Winds 5 to 10 Mph.

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Charles R Johnson Airport Temperature Statistics

December Temperature

Harlingen, Rio Grande Valley International Airport (26.1 miles)

  • Lowest 9 December, 2025

    43 °F

  • Average December

    62.6 °F

  • Highest 7 December, 2025

    86 °F

Climate (2020–Present)

Harlingen, Rio Grande Valley International Airport (26.1 miles)

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  • Average Low 2020–2025

    65.5 °F

  • Average 2020–2025

    75.4 °F

  • Average High 2020–2025

    86.2 °F
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