Balcones Heights Weather Forecast

    • 78
    • 99

    Hot

    • 77
    • 99

    Hot

    • 76
    • 99

    Hot

    • 77
    • 97

    Hot

    • 76
    • 95

    Slight Chance Thunderstorms

    • 74
    • 95

    Slight Chance Thunderstorms

Today 13 Sep Bexar

Partly cloudy this Morning, then clearing. Highs in the upper 90s. South Winds 10 to 15 Mph. Highest heat index Readings up to 108.

Tonight 13 Sep Bexar

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 70s. Southeast Winds 10 to 15 Mph.

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Balcones Heights Temperature Statistics

September Temperature

San Antonio, San Antonio International Airport (5.6 miles)

  • Lowest 5 September, 2026

    77.6 °F

  • Average September

    88.5 °F

  • Highest 2 September, 2026

    100.7 °F

Climate (2021–2026)

San Antonio, San Antonio International Airport (5.6 miles)

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  • Average Low 2021–2026

    62.4 °F

  • Average 2021–2026

    72.3 °F

  • Average High 2021–2026

    83.5 °F
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