Sinclairville Weather Forecast

    • 18
    • 28

    Mostly Cloudy

    • 24
    • 32

    Snow Showers Likely

    • 13
    • 32

    Snow

    • 8
    • 21

    Mostly Cloudy

    • 26
    • 31

    Rain/Snow

    • 22
    • 38

    Rain/Snow

    • 17
    • 31

    Snow Showers Likely

Today 5 Dec Chautauqua

Partly to mostly sunny. Cold with Highs in the upper 20s. South Winds 5 to 10 Mph, becoming southwest.

Tonight 5 Dec Chautauqua

Mostly cloudy. Lows Ranging from 15 to 20 in interior Valleys to the lower 20s along the lake Erie shore. South Winds 5 to 10 Mph, increasing to 10 to 15 Mph.

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Sinclairville Temperature Statistics

December Temperature

Jamestown, Chautauqua County/Jamestown Airport (7.5 miles)

  • Lowest 2 December, 2025

    21 °F

  • Average December

    25.1 °F

  • Highest 1 December, 2025

    30.9 °F

Climate (2020–Present)

Jamestown, Chautauqua County/Jamestown Airport (7.5 miles)

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  • Average Low 2020–2025

    40.8 °F

  • Average 2020–2025

    48.3 °F

  • Average High 2020–2025

    56 °F
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