City of Harlingen Reservoir Weather Forecast

    • 50
    • 78

    Chance Thunderstorms

    • 57
    • 61

    Chance Rain

    • 60
    • 74

    Mostly Cloudy

    • 50
    • 83

    Partly Sunny

    • 49
    • 68

    Partly Sunny

    • 53
    • 74

    Partly Sunny

    • 59
    • 82

    Mostly Sunny

Today 4 Dec Inland Cameron

Mostly cloudy. A slight chance of Showers and Thunderstorms Early, then a chance of Showers and Thunderstorms. Highs in the upper 70s. Temperature falling into the mid 60s. Southwest Winds 5 to 10 Mph, becoming northwest 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

Tonight 4 Dec Inland Cameron

A slight chance of Thunderstorms in the evening. Mostly cloudy with a slight chance of rain. Cooler. Less humid with Lows in the lower 50s. North Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

City of Harlingen Reservoir Temperature Statistics

December Temperature

Harlingen, Rio Grande Valley International Airport (5.6 miles)

  • Lowest 2 December, 2025

    48 °F

  • Average December

    52.4 °F

  • Highest 1 December, 2025

    57 °F

Climate (2020–Present)

Harlingen, Rio Grande Valley International Airport (5.6 miles)

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  • Average Low 2020–2025

    65.5 °F

  • Average 2020–2025

    75.3 °F

  • Average High 2020–2025

    86.1 °F
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