Lake Mercer Weather Forecast

    • 44
    • 58

    Increasing Clouds

    • 45
    • 62

    Mostly Cloudy

    • 44
    • 59

    Rain Likely

    • 42
    • 58

    Chance Rain

    • 35
    • 53

    Chance Rain

    • 29
    • 44

    Chance Rain

Today 17 Feb Fairfax

Areas of fog in the morning. Partly sunny. Highs in the upper 50s. South Winds around 5 Mph.

Tonight 17 Feb Fairfax

Mostly cloudy. Lows in the lower 40s. Southeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Mercer Temperature Statistics

February Temperature

Fort Belvoir (4.3 miles)

  • Lowest 9 February, 2026

    9.9 °F

  • Average February

    29.6 °F

  • Highest 14 February, 2026

    56.7 °F

Climate (2021–Present)

Fort Belvoir (4.3 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    57.9 °F

  • Average High 2021–2026

    68.1 °F
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