San Antonio Weather Forecast

    • 63
    • 85

    Rain Showers

    • 62
    • 85

    Rain Showers

    • 60
    • 84

    Chance Rain Showers

    • 57
    • 86

    Rain Showers Likely

    • 57
    • 85

    Chance Thunderstorms

    • 56
    • 84

    Chance Rain Showers

Today 15 Sep Lower Rio Grande Valley

Partly cloudy. A slight chance of Showers and Thunderstorms this afternoon. Highs in the mid 80s. Chance of rain 20 percent.

Tonight 15 Sep Lower Rio Grande Valley

Mostly cloudy in the Evening, then becoming partly cloudy. A chance of Showers. A chance of Thunderstorms, mainly in the evening. Lows in the lower 60s. Chance of rain 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

San Antonio Temperature Statistics

September Temperature

Socorro Municipal Airport (7.5 miles)

  • Lowest 11 September, 2026

    63.5 °F

  • Average September

    80.9 °F

  • Highest 11 September, 2026

    98.1 °F

Climate (2021–2026)

Socorro Municipal Airport (7.5 miles)

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

  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    61.3 °F

  • Average High 2021–2026

    75.8 °F
Get WillyWeather+ to remove ads