Herndon Weather Forecast

    • 43
    • 59

    Mostly Sunny

    • 43
    • 64

    Mostly Sunny

    • 39
    • 63

    Mostly Sunny

    • 43
    • 67

    Mostly Sunny

    • 43
    • 66

    Mostly Cloudy

    • 39
    • 60

    Chance Rain

    • 32
    • 51

    Chance Rain

Today 7 Nov Eastern Loudoun

Partly sunny. Highs in the upper 50s. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 7 Nov Eastern Loudoun

Partly cloudy in the Evening, then becoming mostly clear. Lows in the lower 40s. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Herndon Temperature Statistics

November Temperature

Washington/Dulles International Airport, DC (4.3 miles)

  • Lowest 1 November, 2026

    43.6 °F

  • Average November

    60.4 °F

  • Highest 4 November, 2026

    75.9 °F

Climate (2021–2026)

Washington/Dulles International Airport, DC (4.3 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    68.7 °F
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