Newington Weather Forecast

    • 62
    • 80

    Patchy Fog

    • 65
    • 85

    Partly Sunny

    • 62
    • 88

    Chance Rain Showers

    • 57
    • 69

    Rain Showers Likely

    • 57
    • 67

    Chance Rain Showers

    • 49
    • 71

    Mostly Sunny

    • 45
    • 61

    Mostly Sunny

Today 30 Sep Arlington/Falls Church/Alexandria

Mostly sunny. Highs in the lower 80s. South Winds 5 to 10 Mph.

Tonight 30 Sep Arlington/Falls Church/Alexandria

Mostly cloudy. Patchy fog. Lows in the lower 60s. South Winds around 5 Mph.

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Newington Temperature Statistics

September Temperature

Fort Belvoir (1.2 miles)

  • Lowest 25 September, 2026

    52 °F

  • Average September

    72.2 °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

    68.3 °F
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