Finleyville Weather Forecast

    • 31
    • 40

    Mostly Cloudy

    • 46
    • 60

    Rain

    • 21
    • 49

    Snow Showers

    • 20
    • 27

    Slight Chance Snow Showers

    • 23
    • 33

    Snow Showers Likely

    • 15
    • 30

    Chance Snow Showers

Today 27 Dec Washington

Considerable cloudiness. Near steady temperature in the upper 30s. North Winds around 5 Mph Early, becoming light and variable.

Tonight 27 Dec Washington

Mostly cloudy. Lows in the lower 30s. East Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Finleyville Temperature Statistics

December Temperature

Pittsburgh - Allegheny County Airport (8.1 miles)

  • Lowest 15 December, 2025

    7 °F

  • Average December

    29.9 °F

  • Highest 18 December, 2025

    57.9 °F

Climate (2020–Present)

Pittsburgh - Allegheny County Airport (8.1 miles)

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  • Average Low 2020–2025

    46.1 °F

  • Average 2020–2025

    54.6 °F

  • Average High 2020–2025

    63.3 °F
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