Greenville Weather Forecast

    • 55
    • 75

    Slight Chance Thunderstorms

    • 59
    • 81

    Mostly Sunny

    • 59
    • 81

    Rain Showers

    • 54
    • 75

    Chance Thunderstorms

    • 53
    • 72

    Partly Sunny

    • 56
    • 77

    Partly Sunny

    • 61
    • 80

    Mostly Cloudy

Today 20 Aug Mercer

Partly sunny with a slight chance of Showers and Thunderstorms. Near steady temperature in the lower 70s. Northeast Winds around 5 Mph. Chance of rain 20 percent.

Tonight 20 Aug Mercer

Mainly clear. Lows in the mid 50s. Northeast Winds around 5 Mph.

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Greenville Temperature Statistics

August Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 4 August, 2026

    53.1 °F

  • Average August

    71 °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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