Potomac River - Rosilie Island Weather Forecast

    • 44
    • 69

    Becoming Sunny

    • 47
    • 67

    Chance Rain Showers

    • 44
    • 59

    Chance Rain

    • 44
    • 62

    Mostly Sunny

    • 57
    • 74

    Partly Sunny

    • 59
    • 81

    Chance Rain Showers

Today 30 Apr Arlington/Falls Church/Alexandria

Partly sunny. Highs in the upper 60s. Northwest Winds 10 to 15 Mph.

Tonight 30 Apr Arlington/Falls Church/Alexandria

Mostly clear. Lows in the mid 40s. Northwest Winds 10 to 15 Mph.

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  • Temperature Real-Time

Potomac River - Rosilie Island Temperature Statistics

April Temperature

Washington/Reagan National Airport, DC (3.7 miles)

  • Lowest 8 April, 2026

    35.7 °F

  • Average April

    64.6 °F

  • Highest 15 April, 2026

    90.6 °F

Climate (2021–Present)

Washington/Reagan National Airport, DC (3.7 miles)

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  • Average Low 2021–2026

    52.4 °F

  • Average 2021–2026

    60.4 °F

  • Average High 2021–2026

    69.2 °F
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