San Antonio International Airport Weather Forecast

    • 75
    • 96

    Chance Thunderstorms

    • 75
    • 93

    Chance Thunderstorms

    • 76
    • 96

    Chance Thunderstorms

    • 75
    • 95

    Chance Thunderstorms

    • 76
    • 93

    Slight Chance Thunderstorms

    • 75
    • 92

    Slight Chance Thunderstorms

    • 75
    • 93

    Mostly Sunny

Today 17 Sep Bexar

Partly cloudy. A 40 percent chance of Showers and Thunderstorms in the afternoon. Highs in the lower 90s. Northeast Winds 5 to 10 Mph.

Tonight 17 Sep Bexar

Partly cloudy with a 20 percent chance of Showers and Thunderstorms. Lows in the mid 70s. Northeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Antonio International Airport Temperature Statistics

September Temperature

San Antonio, San Antonio International Airport (0 miles)

  • Lowest 15 September, 2019

    71.1 °F
  • Average September

    83.9 °F
  • Highest 2 September, 2019

    98.1 °F

Climate (2010–Present)

San Antonio, San Antonio International Airport (0 miles)

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  • Average Low 2010–Present

    61.5 °F
  • Average 2010–Present

    70.2 °F
  • Average High 2010–Present

    80.8 °F
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