Mendenhall Weather Forecast

    • 60
    • 83

    Patchy Fog

    • 58
    • 81

    Increasing Clouds

    • 60
    • 75

    Rain Showers Likely

    • 60
    • 71

    Rain Showers Likely

    • 60
    • 78

    Slight Chance Rain Showers

    • 59
    • 84

    Mostly Sunny

    • 55
    • 76

    Partly Sunny

Today 14 Sep Eastern Chester

Patchy fog this morning. Sunny. Highs in the lower 80s. North Winds around 5 Mph.

Tonight 14 Sep Eastern Chester

Partly cloudy. Patchy fog after midnight. Lows in the upper 50s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mendenhall Temperature Statistics

September Temperature

Wilmington, New Castle County Airport (12.4 miles)

  • Lowest 9 September, 2025

    53.1 °F

  • Average September

    69.8 °F

  • Highest 6 September, 2025

    91 °F

Climate (2020–Present)

Wilmington, New Castle County Airport (12.4 miles)

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  • Average Low 2020–2025

    48.1 °F

  • Average 2020–2025

    57.3 °F

  • Average High 2020–2025

    66.5 °F
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