Lake Mercer Weather Forecast

    • 64
    • 82

    Mostly Cloudy

    • 64
    • 85

    Chance Rain Showers

    • 44
    • 72

    Rain Showers

    • 42
    • 62

    Partly Sunny

    • 33
    • 56

    Mostly Sunny

    • 39
    • 57

    Partly Sunny

Today 3 Apr Fairfax

Partly sunny. Warmer with Highs in the lower 80s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 3 Apr Fairfax

Mostly cloudy. Lows in the mid 60s. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Mercer Temperature Statistics

April Temperature

Fort Belvoir (4.3 miles)

  • Lowest 1 April, 2026

    62.1 °F

  • Average April

    72 °F

  • Highest 1 April, 2026

    88.5 °F

Climate (2021–Present)

Fort Belvoir (4.3 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    68.3 °F
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