Fairfax Weather Forecast

    • 66
    • 84

    Chance Thunderstorms

    • 66
    • 84

    Partly Sunny

    • 71
    • 86

    Partly Sunny

    • 72
    • 89

    Partly Sunny

    • 72
    • 89

    Mostly Cloudy

    • 71
    • 88

    Chance Rain Showers

Today 28 Aug New Castle

Partly sunny. A chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the mid 80s. North Winds around 5 Mph. Chance of rain 50 percent.

Tonight 28 Aug New Castle

Mostly cloudy. A chance of Thunderstorms in the evening. Humid with Lows in the upper 60s. North Winds around 5 Mph. Chance of precipitation 50 percent.

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Fairfax Temperature Statistics

August Temperature

Wilmington, New Castle County Airport (8.1 miles)

  • Lowest 25 August, 2026

    59 °F

  • Average August

    78.6 °F

  • Highest 7 August, 2026

    93.7 °F

Climate (2021–2026)

Wilmington, New Castle County Airport (8.1 miles)

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  • Average Low 2021–2026

    47.9 °F

  • Average 2021–2026

    57.3 °F

  • Average High 2021–2026

    66.7 °F
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