Sebastian Weather Forecast

    • 77
    • 99

    Hot

    • 77
    • 100

    Hot

    • 77
    • 101

    Hot

    • 77
    • 100

    Hot

    • 77
    • 100

    Hot

    • 77
    • 100

    Slight Chance Thunderstorms

Today 29 Aug Inland Willacy

Sunny. Highs in the upper 90s. Southeast Winds around 5 Mph, increasing to east 10 to 15 Mph with Gusts up to 20 Mph this afternoon. Heat index Values up to 110.

Tonight 29 Aug Inland Willacy

Mostly clear. Humid with Lows in the mid 70s. Southeast Winds 10 to 15 Mph with Gusts up to 20 Mph, Diminishing to around 5 Mph after midnight. Heat index Values up to 105 early in the evening.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Sebastian Temperature Statistics

August Temperature

Harlingen, Rio Grande Valley International Airport (11.2 miles)

  • Lowest 23 August, 2026

    72.6 °F

  • Average August

    89.2 °F

  • Highest 22 August, 2026

    105.7 °F

Climate (2021–2026)

Harlingen, Rio Grande Valley International Airport (11.2 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    65.8 °F

  • Average 2021–2026

    76 °F

  • Average High 2021–2026

    86.9 °F
Get WillyWeather+ to remove ads