Greenville Weather Forecast

    • 59
    • 80

    Rain Showers

    • 49
    • 70

    Partly Sunny

    • 51
    • 75

    Mostly Sunny

    • 59
    • 81

    Partly Sunny

    • 62
    • 83

    Partly Sunny

    • 64
    • 84

    Chance Thunderstorms

Today 21 Jul Mercer

Showers with a chance of Thunderstorms Early, then scattered Thunderstorms and Showers likely. Some Thunderstorms may be severe. Highs in the upper 70s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain near 100 percent.

Tonight 21 Jul Mercer

Mostly cloudy. Showers likely with a chance of Thunderstorms in the Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Humid with Lows in the upper 50s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming northwest after midnight. Chance of rain 70 percent.

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Greenville Temperature Statistics

July Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 19 July, 2026

    60.1 °F

  • Average July

    74.9 °F

  • Highest 1 July, 2026

    91 °F

Climate (2021–2026)

Port Meadville Airport (17.4 miles)

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  • Average Low 2021–2026

    42.7 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.3 °F
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