Lake Mercer Weather Forecast

    • 21
    • 38

    Sunny

    • 28
    • 42

    Partly Sunny

    • 29
    • 49

    Partly Sunny

    • 39
    • 56

    Partly Sunny

    • 40
    • 63

    Partly Sunny

    • 42
    • 60

    Chance Rain

Today 21 Feb Fairfax

Sunny. Highs in the upper 30s. Northwest Winds 15 to 20 Mph with Gusts up to 35 Mph.

Tonight 21 Feb Fairfax

Clear. Lows in the lower 20s. Northwest Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Mercer Temperature Statistics

February Temperature

Fort Belvoir (4.3 miles)

  • Lowest 19 February, 2025

    20.7 °F

  • Average February

    37.3 °F

  • Highest 16 February, 2025

    65.5 °F

Climate (2020–Present)

Fort Belvoir (4.3 miles)

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  • Average Low 2020–2025

    47.8 °F

  • Average 2020–2025

    58 °F

  • Average High 2020–2025

    68.2 °F
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