Greenville Weather Forecast

    • 58
    • 81

    Rain Showers

    • 53
    • 72

    Rain Showers Likely

    • 53
    • 70

    Slight Chance Rain Showers

    • 53
    • 76

    Partly Sunny

    • 59
    • 80

    Partly Sunny

    • 61
    • 82

    Chance Thunderstorms

Today 22 Aug Mercer

Mostly sunny this Morning, then partly sunny with Showers with Thunderstorms likely this afternoon. Highs around 80. South Winds 5 to 10 Mph. Chance of rain 80 percent.

Tonight 22 Aug Mercer

Considerable cloudiness. Showers with Thunderstorms likely in the Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the upper 50s. South Winds 5 to 10 Mph, becoming southwest after midnight. Chance of rain 90 percent.

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Greenville Temperature Statistics

August Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 4 August, 2026

    53.1 °F

  • Average August

    70.7 °F

  • Highest 6 August, 2026

    82.9 °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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