Garrison Weather Forecast

    • 49
    • 76

    Mostly Sunny

    • 46
    • 72

    Mostly Sunny

    • 44
    • 68

    Mostly Sunny

    • 46
    • 71

    Mostly Sunny

    • 52
    • 77

    Mostly Sunny

    • 56
    • 81

    Partly Sunny

Today 22 Aug McLean

Sunny. Highs in the upper 70s. West Winds 5 to 10 Mph, increasing to northwest around 20 Mph in the afternoon.

Tonight 22 Aug McLean

Mostly clear. Lows in the upper 40s. Northwest Winds 10 to 15 Mph. Gusts up to 30 Mph in the evening.

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Garrison Temperature Statistics

August Temperature

Garrison (0.6 miles)

  • Lowest 15 August, 2025

    52.6 °F

  • Average August

    69.6 °F

  • Highest 19 August, 2025

    91 °F

Climate (2020–Present)

Garrison (0.6 miles)

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  • Average Low 2020–2025

    31.2 °F

  • Average 2020–2025

    42.6 °F

  • Average High 2020–2025

    54 °F
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