Sebastian Weather Forecast

    • 73
    • 95

    Chance Thunderstorms

    • 74
    • 96

    Slight Chance Thunderstorms

    • 74
    • 96

    Chance Thunderstorms

    • 75
    • 96

    Chance Thunderstorms

    • 74
    • 95

    Chance Thunderstorms

    • 75
    • 94

    Chance Thunderstorms

Today 28 Sep Inland Willacy

Sunny. A slight chance of Showers and Thunderstorms this Morning, then a chance of Showers and Thunderstorms this afternoon. Highs in the mid 90s. North Winds around 5 Mph, increasing to northeast 10 to 15 Mph this afternoon. Chance of rain 40 percent.

Tonight 28 Sep Inland Willacy

Mostly clear. Lows in the lower 70s. East Winds 10 to 15 Mph, becoming northeast around 5 Mph after midnight.

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Sebastian Temperature Statistics

September Temperature

Harlingen, Rio Grande Valley International Airport (11.2 miles)

  • Lowest 2 September, 2023

    71.7 °F

  • Average September

    87.2 °F

  • Highest 8 September, 2023

    103.6 °F

Climate (2010–Present)

Harlingen, Rio Grande Valley International Airport (11.2 miles)

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  • Average Low 2010–Present

    65.6 °F

  • Average 2010–Present

    75 °F

  • Average High 2010–Present

    86.1 °F
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