Belmont Bay Weather Forecast

    • 72
    • 81

    Chance Rain Showers

    • 72
    • 85

    Rain Showers

    • 72
    • 87

    Rain Showers Likely

    • 69
    • 83

    Chance Thunderstorms

    • 67
    • 83

    Partly Sunny

    • 68
    • 84

    Mostly Sunny

    • 71
    • 89

    Mostly Sunny

Today 8 Jul Fairfax

Partly sunny with isolated Showers and Thunderstorms. Highs in the lower 80s. Southeast Winds around 5 Mph. Chance of rain 20 percent.

Tonight 8 Jul Fairfax

Mostly cloudy. Scattered Showers with isolated Thunderstorms after midnight. Lows around 70. South Winds around 5 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Belmont Bay Temperature Statistics

July Temperature

Fort Belvoir (5 miles)

  • Lowest 1 July, 2026

    72.3 °F

  • Average July

    85.4 °F

  • Highest 4 July, 2026

    101.3 °F

Climate (2021–2026)

Fort Belvoir (5 miles)

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  • Average Low 2021–2026

    47.7 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    68.3 °F
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