Downtown (San Antonio) Weather Forecast

    • 75
    • 94

    Mostly Cloudy

    • 77
    • 96

    Partly Sunny

    • 76
    • 96

    Partly Sunny

    • 77
    • 95

    Mostly Cloudy

    • 75
    • 94

    Chance Thunderstorms

    • 72
    • 89

    Chance Rain Showers

Today 26 Sep Bexar

Mostly cloudy in the Morning, then becoming partly cloudy. Highs in the lower 90s. Southeast Winds around 5 Mph.

Tonight 26 Sep Bexar

Partly cloudy. Lows in the lower 70s. Southeast Winds around 5 Mph.

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Downtown (San Antonio) Temperature Statistics

September Temperature

San Antonio, Stinson Municipal Airport (6.2 miles)

  • Lowest 20 September, 2026

    74.6 °F

  • Average September

    89 °F

  • Highest 11 September, 2026

    104.6 °F

Climate (2021–2026)

San Antonio, Stinson Municipal Airport (6.2 miles)

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  • Average Low 2021–2026

    63 °F

  • Average 2021–2026

    73.9 °F

  • Average High 2021–2026

    85.4 °F
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