Petrolia Weather Forecast

    • 51
    • 76

    Chance Thunderstorms

    • 43
    • 62

    Partly Sunny

    • 58
    • 70

    Partly Sunny

    • 60
    • 74

    Chance Rain Showers

    • 59
    • 75

    Rain Showers Likely

    • 54
    • 71

    Chance Rain Showers

Today 13 Sep Allegany

Partly sunny through early Afternoon, then a chance of Showers and Thunderstorms late. Highs Ranging from the mid 70s on the Hilltops to the upper 70s across the lower Elevations. Light Winds, becoming west around 10 Mph. Chance of rain 40 percent.

Tonight 13 Sep Allegany

Mostly cloudy. A chance of Showers and Thunderstorms in the Evening, then a chance of Showers overnight. Lows around 50. West Winds 10 Mph or less. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Petrolia Temperature Statistics

September Temperature

Wellsville, Wellsville Municipal Airport (1.9 miles)

  • Lowest 7 September, 2026

    44.1 °F

  • Average September

    65.8 °F

  • Highest 1 September, 2026

    81 °F

Climate (2021–2026)

Wellsville, Wellsville Municipal Airport (1.9 miles)

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  • Average Low 2021–2026

    40.1 °F

  • Average 2021–2026

    48.5 °F

  • Average High 2021–2026

    57.1 °F
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