Herndon Weather Forecast

    • 63
    • 92

    Partly Sunny

    • 62
    • 91

    Mostly Sunny

    • 63
    • 93

    Mostly Sunny

    • 65
    • 94

    Partly Sunny

    • 65
    • 89

    Chance Rain Showers

    • 65
    • 87

    Chance Rain Showers

Today 16 Sep Christian

Mostly sunny. Highs in the lower 90s. South Winds around 5 Mph, becoming northeast around 5 Mph this afternoon.

Tonight 16 Sep Christian

Partly cloudy. Lows in the mid 60s. East Winds around 5 Mph in the Evening, becoming light and variable.

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Herndon Temperature Statistics

September Temperature

Fort Campbell U. S. Army Airfield (5.6 miles)

  • Lowest 7 September, 2025

    49.1 °F

  • Average September

    71.3 °F

  • Highest 13 September, 2025

    92.7 °F

Climate (2020–Present)

Fort Campbell U. S. Army Airfield (5.6 miles)

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  • Average Low 2020–2025

    50.4 °F

  • Average 2020–2025

    60 °F

  • Average High 2020–2025

    69.6 °F
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