Newington Weather Forecast

    • 66
    • 84

    Thunderstorms

    • 62
    • 77

    Rain Showers

    • 57
    • 68

    Rain Showers

    • 55
    • 64

    Rain Showers Likely

    • 54
    • 65

    Slight Chance Rain Showers

    • 53
    • 66

    Partly Sunny

    • 54
    • 70

    Partly Sunny

Today 20 Sep Arlington/Falls Church/Alexandria

Mostly sunny. Highs in the lower 70s.

Tonight 20 Sep Arlington/Falls Church/Alexandria

Mostly cloudy. Scattered Showers with isolated Thunderstorms this Evening, then isolated Showers after midnight. Lows in the mid 60s. North Winds around 5 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

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Newington Temperature Statistics

September Temperature

Fort Belvoir (1.2 miles)

  • Lowest 15 September, 2026

    53.8 °F

  • Average September

    75.6 °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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