Lake Mercer Weather Forecast

    • 35
    • 54

    Becoming Sunny

    • 40
    • 62

    Mostly Sunny

    • 28
    • 52

    Mostly Cloudy

    • 26
    • 34

    Chance Wintry Mix

    • 36
    • 40

    Rain Likely

    • 41
    • 54

    Slight Chance Rain

Today 27 Feb Fairfax

Partly sunny this Morning, then clearing. Patchy fog this morning. Highs in the mid 50s. Light and variable Winds, becoming south around 5 Mph this afternoon.

Tonight 27 Feb Fairfax

Mostly clear. Lows in the mid 30s. South 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

    34 °F

  • Highest 20 February, 2026

    57.9 °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

    68.2 °F
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