Greenville Weather Forecast

    • 62
    • 74

    Chance Rain Showers

    • 65
    • 80

    Rain Showers Likely

    • 60
    • 83

    Rain Showers Likely

    • 56
    • 74

    Mostly Sunny

    • 50
    • 73

    Mostly Sunny

    • 52
    • 71

    Partly Sunny

Today 15 May New Castle

Partly sunny with a chance of Showers with a slight chance of Thunderstorms. Near steady temperature in the lower 70s. South Winds around 5 Mph. Chance of rain 50 percent.

Tonight 15 May New Castle

Partly cloudy with a chance of Showers with a slight chance of Thunderstorms in the Evening, then mostly cloudy after midnight. Areas of fog. Lows in the lower 60s. South Winds around 5 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Greenville Temperature Statistics

May Temperature

Wilmington, New Castle County Airport (6.8 miles)

  • Lowest 10 May, 2025

    47.6 °F

  • Average May

    67.3 °F

  • Highest 2 May, 2025

    85.6 °F

Climate (2020–Present)

Wilmington, New Castle County Airport (6.8 miles)

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  • Average Low 2020–2025

    48.2 °F

  • Average 2020–2025

    57.3 °F

  • Average High 2020–2025

    66.5 °F
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