Newington Weather Forecast

    • 63
    • 72

    Rain Showers

    • 57
    • 64

    Rain

    • 56
    • 65

    Rain

    • 52
    • 67

    Mostly Cloudy

    • 54
    • 67

    Partly Sunny

    • 55
    • 69

    Partly Sunny

    • 55
    • 71

    Partly Sunny

Today 21 Sep Arlington/Falls Church/Alexandria

Cloudy with a 40 percent chance of Showers. Highs in the lower 70s. Northeast Winds 5 to 10 Mph.

Tonight 21 Sep Arlington/Falls Church/Alexandria

Cloudy. A chance of Showers in the Evening, then Showers with a chance of Thunderstorms after midnight. Lows in the lower 60s. East Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 90 percent.

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Newington Temperature Statistics

September Temperature

Fort Belvoir (1.2 miles)

  • Lowest 15 September, 2026

    53.8 °F

  • Average September

    75.5 °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

    58.2 °F

  • Average High 2021–2026

    68.4 °F
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