Herndon Weather Forecast

    • 75
    • 101

    Chance Thunderstorms

    • 72
    • 92

    Chance Thunderstorms

    • 71
    • 93

    Mostly Sunny

    • 72
    • 95

    Mostly Sunny

    • 72
    • 93

    Slight Chance Thunderstorms

    • 73
    • 94

    Slight Chance Thunderstorms

Today 19 Aug Craighead

Sunny. A slight chance of Showers and Thunderstorms this morning. Highs around 101. East Winds around 5 Mph, becoming south this afternoon. Chance of rain 20 percent. Heat index Values up to 111.

Tonight 19 Aug Craighead

Partly cloudy in the Evening, then becoming mostly cloudy. A chance of Showers. A slight chance of Thunderstorms in the Evening, then a chance of Thunderstorms after midnight. Lows in the mid 70s. East Winds 5 to 10 Mph. Chance of rain 50 percent. Heat index Values up to 105 early in the evening.

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Herndon Temperature Statistics

August Temperature

Walnut Ridge Regional Airport (16.2 miles)

  • Lowest 3 August, 2026

    66.9 °F

  • Average August

    81.7 °F

  • Highest 16 August, 2026

    99 °F

Climate (2021–2026)

Walnut Ridge Regional Airport (16.2 miles)

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  • Average Low 2021–2026

    52.2 °F

  • Average 2021–2026

    61.7 °F

  • Average High 2021–2026

    71.6 °F
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