Lockhart Weather Forecast

    • 76
    • 98

    Slight Chance Thunderstorms

    • 75
    • 100

    Chance Rain Showers

    • 74
    • 98

    Slight Chance Thunderstorms

    • 74
    • 97

    Hot

    • 74
    • 97

    Hot

    • 74
    • 97

    Slight Chance Thunderstorms

Today 1 Sep Caldwell

Mostly sunny this Morning, then becoming partly cloudy. A slight chance of Showers. A slight chance of Thunderstorms this afternoon. Highs in the upper 90s. Northwest Winds around 5 Mph, becoming east around 5 Mph this afternoon. Chance of rain 20 percent. Highest heat index Readings up to 105.

Tonight 1 Sep Caldwell

Partly cloudy. A slight chance of Showers and Thunderstorms in the evening. Lows in the mid 70s. Southeast Winds 5 to 10 Mph, becoming southwest after midnight. Chance of rain 20 percent.

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Lockhart Temperature Statistics

September Temperature

San Marcos, San Marcos Municipal Airport (11.2 miles)

  • Lowest

  • Average September

  • Highest

Climate (2021–2026)

San Marcos, San Marcos Municipal Airport (11.2 miles)

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  • Average Low 2021–2026

    60.1 °F
  • Average 2021–2026

    70.9 °F
  • Average High 2021–2026

    82.6 °F
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