Olean Weather Forecast

    • 24
    • 35

    Increasing Clouds

    • 16
    • 38

    Mostly Cloudy

    • 22
    • 29

    Wintry Mix

    • 31
    • 39

    Rain Showers

    • 17
    • 46

    Rain/Snow

    • 13
    • 24

    Snow Showers Likely

Today 24 Dec Cattaraugus

Mostly cloudy in the Morning, then becoming mostly sunny. Highs in the lower 30s. Northwest Winds 5 to 10 Mph with Gusts up to 30 Mph in the Morning, becoming light.

Tonight 24 Dec Cattaraugus

Mostly cloudy. Lows in the mid 20s. Northwest Winds 10 to 15 Mph.

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Olean Temperature Statistics

December Temperature

Bradford Regional Airport (22.4 miles)

  • Lowest 9 December, 2025

    -11.9 °F

  • Average December

    21.4 °F

  • Highest 19 December, 2025

    46.9 °F

Climate (2020–Present)

Bradford Regional Airport (22.4 miles)

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  • Average Low 2020–2025

    39 °F

  • Average 2020–2025

    48.8 °F

  • Average High 2020–2025

    58.4 °F
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