Newington Weather Forecast

    • 63
    • 82

    Mostly Sunny

    • 62
    • 84

    Partly Sunny

    • 64
    • 86

    Mostly Sunny

    • 72
    • 88

    Mostly Sunny

    • 67
    • 90

    Chance Thunderstorms

    • 64
    • 84

    Partly Sunny

    • 67
    • 85

    Slight Chance Rain Showers

Today 6 Sep Arlington/Falls Church/Alexandria

Mostly sunny. Highs in the lower 80s. Northeast Winds around 5 Mph.

Tonight 6 Sep Arlington/Falls Church/Alexandria

Mostly clear. Lows in the mid 60s. Northeast Winds around 5 Mph.

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Newington Temperature Statistics

September Temperature

Fort Belvoir (1.2 miles)

  • Lowest 3 September, 2026

    71.2 °F

  • Average September

    80 °F

  • Highest 1 September, 2026

    96.4 °F

Climate (2021–2026)

Fort Belvoir (1.2 miles)

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  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    68.4 °F
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