Lake Mercer Weather Forecast

    • 60
    • 84

    Mostly Sunny

    • 63
    • 91

    Mostly Sunny

    • 55
    • 81

    Chance Rain Showers

    • 57
    • 65

    Rain Showers

    • 60
    • 69

    Chance Thunderstorms

    • 62
    • 76

    Chance Thunderstorms

Today 1 May Fairfax

Sunny. Highs in the mid 80s. Northwest Winds 5 to 10 Mph.

Tonight 1 May Fairfax

Mostly clear. Lows around 60. Northeast Winds around 5 Mph, becoming southwest after midnight.

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Lake Mercer Temperature Statistics

May Temperature

Fort Belvoir (4.3 miles)

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  • Average May

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Climate (2019–Present)

Fort Belvoir (4.3 miles)

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  • Average Low 2019–2024

    48.1 °F

  • Average 2019–2024

    58.2 °F

  • Average High 2019–2024

    68.4 °F
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