Harlingen Weather Forecast

    • 57
    • 81

    Becoming Sunny

    • 58
    • 85

    Sunny

    • 62
    • 90

    Sunny

    • 64
    • 90

    Sunny

    • 64
    • 90

    Mostly Sunny

    • 63
    • 90

    Mostly Sunny

Today 18 Mar Inland Cameron

Sunny. Highs around 80. Southeast Winds 10 to 15 Mph.

Tonight 18 Mar Inland Cameron

Mostly clear. Lows in the upper 50s. Southeast Winds 10 to 15 Mph. Gusts up to 25 Mph in the evening.

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Harlingen Temperature Statistics

March Temperature

Harlingen, Rio Grande Valley International Airport (3.7 miles)

  • Lowest 13 March, 2026

    46 °F

  • Average March

    76.6 °F

  • Highest 11 March, 2026

    97 °F

Climate (2021–Present)

Harlingen, Rio Grande Valley International Airport (3.7 miles)

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  • Average Low 2021–2026

    65.7 °F

  • Average 2021–2026

    75.6 °F

  • Average High 2021–2026

    86.5 °F
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