San Antonio Weather Forecast

    • 79
    • 103

    Hot

    • 78
    • 103

    Hot

    • 78
    • 103

    Hot

    • 78
    • 102

    Hot

    • 79
    • 103

    Hot

    • 79
    • 102

    Hot

    • 79
    • 101

    Hot

Today 21 Aug Bexar

Mostly sunny. Hot with Highs around 102. Southeast Winds around 5 Mph. Highest heat index Readings up to 110.

Tonight 21 Aug Bexar

Mostly clear. Lows in the upper 70s. South Winds 5 to 10 Mph. Highest heat index Readings up to 105 early this evening.

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San Antonio Temperature Statistics

August Temperature

San Antonio, Stinson Municipal Airport (5.6 miles)

  • Lowest 3 August, 2026

    74.6 °F

  • Average August

    89.7 °F

  • Highest 13 August, 2026

    104.6 °F

Climate (2021–2026)

San Antonio, Stinson Municipal Airport (5.6 miles)

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  • Average Low 2021–2026

    63 °F

  • Average 2021–2026

    73.8 °F

  • Average High 2021–2026

    85.3 °F
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