Herndon Weather Forecast

    • 76
    • 93

    Slight Chance Thunderstorms

    • 77
    • 95

    Partly Sunny

    • 76
    • 97

    Hot

    • 77
    • 99

    Hot

    • 76
    • 100

    Hot

    • 71
    • 96

    Mostly Sunny

Today 12 Aug Christian

Mostly sunny. Highs in the lower 90s. Southwest Winds 5 to 10 Mph.

Tonight 12 Aug Christian

Mostly cloudy with a slight chance of Showers and Thunderstorms. Lows in the mid 70s. South Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Herndon Temperature Statistics

August Temperature

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

  • Lowest 4 August, 2026

    66.9 °F

  • Average August

    78.4 °F

  • Highest 10 August, 2026

    92.3 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    51 °F

  • Average 2021–2026

    60.6 °F

  • Average High 2021–2026

    70.3 °F
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