Sebastian Weather Forecast

    • 77
    • 94

    Slight Chance Thunderstorms

    • 76
    • 95

    Slight Chance Thunderstorms

    • 76
    • 96

    Partly Sunny

    • 77
    • 97

    Hot

    • 77
    • 97

    Slight Chance Thunderstorms

    • 75
    • 96

    Slight Chance Thunderstorms

Today 11 Jul Inland Willacy

Mostly sunny. A slight chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the mid 90s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent. Heat index Values up to 109.

Tonight 11 Jul Inland Willacy

Partly cloudy. Near steady temperature in the upper 70s. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Sebastian Temperature Statistics

July Temperature

Harlingen, Rio Grande Valley International Airport (11.2 miles)

  • Lowest 3 July, 2026

    74.6 °F

  • Average July

    86.2 °F

  • Highest 5 July, 2026

    98.7 °F

Climate (2021–2026)

Harlingen, Rio Grande Valley International Airport (11.2 miles)

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  • Average Low 2021–2026

    65.8 °F

  • Average 2021–2026

    75.8 °F

  • Average High 2021–2026

    86.7 °F
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