Fairfax Weather Forecast

    • 63
    • 84

    Sunny

    • 70
    • 90

    Mostly Sunny

    • 73
    • 97

    Hot

    • 71
    • 91

    Partly Sunny

    • 71
    • 91

    Slight Chance Thunderstorms

    • 69
    • 89

    Chance Rain Showers

Today 13 Jul New Castle

Sunny. Highs in the lower 80s. Southeast Winds 5 to 10 Mph.

Tonight 13 Jul New Castle

Mostly clear. Lows in the lower 60s. South Winds 5 to 10 Mph, becoming southwest after midnight.

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Fairfax Temperature Statistics

July Temperature

Wilmington, New Castle County Airport (8.1 miles)

  • Lowest 8 July, 2026

    65.6 °F

  • Average July

    82.1 °F

  • Highest 2 July, 2026

    103.6 °F

Climate (2021–2026)

Wilmington, New Castle County Airport (8.1 miles)

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  • Average Low 2021–2026

    48 °F

  • Average 2021–2026

    57.3 °F

  • Average High 2021–2026

    66.7 °F
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