Greenville Weather Forecast

    • 72
    • 85

    Chance Rain Showers

    • 72
    • 90

    Chance Rain Showers

    • 72
    • 92

    Chance Thunderstorms

    • 67
    • 88

    Rain Showers Likely

    • 62
    • 82

    Slight Chance Thunderstorms

    • 57
    • 79

    Mostly Sunny

    • 57
    • 78

    Partly Sunny

Today 31 Aug Mercer

Partly sunny. Near steady temperature in the lower 80s. West Winds 5 to 10 Mph.

Tonight 31 Aug Mercer

A slight chance of Thunderstorms this evening. Mostly cloudy with a slight chance of Showers. Lows in the lower 70s. South Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Greenville Temperature Statistics

August Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 29 August, 2026

    52 °F

  • Average August

    68.8 °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

    42.6 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.2 °F
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