Harper Weather Forecast

    • 70
    • 90

    Slight Chance Thunderstorms

    • 70
    • 91

    Partly Sunny

    • 70
    • 91

    Slight Chance Thunderstorms

    • 70
    • 92

    Mostly Sunny

    • 70
    • 91

    Mostly Sunny

    • 70
    • 91

    Mostly Sunny

Today 4 Sep Gillespie

Mostly cloudy. A slight chance of Showers Early, then a chance of Showers with a slight chance of Thunderstorms. Highs around 90. Southeast Winds around 10 Mph. Chance of rain 40 percent.

Tonight 4 Sep Gillespie

Partly cloudy. Lows in the lower 70s. South Winds 5 to 10 Mph.

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  • Temperature Real-Time

Harper Temperature Statistics

September Temperature

Fredericksburg, Gillespie County Airport (19.9 miles)

  • Lowest 1 September, 2026

    69.8 °F

  • Average September

    85.2 °F

  • Highest 2 September, 2026

    100.4 °F

Climate (2021–2026)

Fredericksburg, Gillespie County Airport (19.9 miles)

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  • Average Low 2021–2026

    56 °F

  • Average 2021–2026

    67.5 °F

  • Average High 2021–2026

    79.5 °F
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