Rosemont Weather Forecast

    • 44
    • 66

    Sunny

    • 55
    • 73

    Sunny

    • 56
    • 79

    Mostly Sunny

    • 55
    • 75

    Partly Sunny

    • 54
    • 72

    Partly Sunny

    • 57
    • 70

    Chance Rain Showers

Today 6 Oct Arlington/Falls Church/Alexandria

Sunny. Highs in the mid 60s. Northwest Winds around 5 Mph.

Tonight 6 Oct Arlington/Falls Church/Alexandria

Clear. Lows in the lower 40s. Light and variable Winds, becoming south around 5 Mph after midnight.

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  • Temperature Real-Time

Rosemont Temperature Statistics

October Temperature

Washington/Reagan National Airport, DC (2.5 miles)

  • Lowest 3 October, 2026

    60.1 °F

  • Average October

    70.3 °F

  • Highest 2 October, 2026

    84.9 °F

Climate (2021–2026)

Washington/Reagan National Airport, DC (2.5 miles)

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  • Average Low 2021–2026

    52.4 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    69.3 °F
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