Sinclairville Weather Forecast

    • 20
    • 37

    Chance Snow Showers

    • 16
    • 27

    Chance Snow Showers

    • 24
    • 32

    Snow Showers

    • 26
    • 40

    Chance Rain Showers

    • 28
    • 36

    Mostly Cloudy

    • 35
    • 49

    Rain Showers Likely

Today 20 Dec Chautauqua

Partly sunny in the Morning, then becoming mostly cloudy. Highs Ranging from the mid 30s on the Hilltops to the upper 30s across the lower Elevations. South Winds 5 to 10 Mph, increasing to 10 to 15 Mph with Gusts up to 35 Mph.

Tonight 20 Dec Chautauqua

Cloudy. A chance of snow Showers. Lows Ranging from 15 to 20 in interior Valleys to the lower 20s along the lake Erie shore. West Winds 10 to 15 Mph with Gusts up to 30 Mph, becoming southwest. Chance of snow 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sinclairville Temperature Statistics

December Temperature

Jamestown, Chautauqua County/Jamestown Airport (7.5 miles)

  • Lowest 9 December, 2025

    3 °F

  • Average December

    21.5 °F

  • Highest 17 December, 2025

    37.9 °F

Climate (2020–Present)

Jamestown, Chautauqua County/Jamestown Airport (7.5 miles)

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  • Average Low 2020–2025

    40.7 °F

  • Average 2020–2025

    48.2 °F

  • Average High 2020–2025

    55.9 °F
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