Greenville Weather Forecast

    • 61
    • 86

    Thunderstorms

    • 54
    • 78

    Mostly Sunny

    • 63
    • 82

    Rain Showers Likely

    • 62
    • 83

    Rain Showers

    • 54
    • 74

    Chance Rain Showers

    • 55
    • 77

    Mostly Sunny

Today 18 Jul Mercer

Smoke this morning. A chance of Showers and Thunderstorms this Morning, then Showers with Thunderstorms likely this afternoon. Highs in the mid 80s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain near 100 percent.

Tonight 18 Jul Mercer

Showers and Thunderstorms in the evening. Humid with Lows in the lower 60s. West Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming northwest after midnight. Chance of rain near 100 percent.

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Greenville Temperature Statistics

July Temperature

Port Meadville Airport (17.4 miles)

  • Lowest 12 July, 2026

    61 °F

  • Average July

    75.7 °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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