Garrison Dam Weather Forecast

    • 18
    • 35

    Mostly Cloudy

    • 38
    • 51

    Breezy

    • 30
    • 61

    Mostly Cloudy

    • 25
    • 43

    Snow Likely

    • 17
    • 38

    Chance Snow

    • 21
    • 36

    Partly Sunny

Today 6 Mar McLean

Mostly cloudy. A slight chance of freezing drizzle and snow in the morning. Highs in the mid 30s. Northwest Winds around 15 Mph with Gusts up to 25 Mph.

Tonight 6 Mar McLean

Partly cloudy. Lows 15 to 20. West Winds 5 to 10 Mph.

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  • Temperature Real-Time

Garrison Dam Temperature Statistics

March Temperature

Garrison (10.6 miles)

  • Lowest 1 March, 2026

    -2.9 °F

  • Average March

    20.1 °F

  • Highest 2 March, 2026

    39 °F

Climate (2021–Present)

Garrison (10.6 miles)

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  • Average Low 2021–2026

    31.4 °F

  • Average 2021–2026

    42.8 °F

  • Average High 2021–2026

    54.2 °F
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