Allegheny West Weather Forecast

    • 42
    • 45

    Rain

    • 26
    • 57

    Rain Showers Likely

    • 34
    • 40

    Mostly Cloudy

    • 26
    • 47

    Mostly Sunny

    • 26
    • 37

    Partly Sunny

    • 34
    • 43

    Chance Rain

Today 18 Dec Philadelphia

Patchy fog and freezing fog in the morning. Partly sunny in the Morning, then mostly cloudy with a slight chance of rain in the afternoon. Highs in the mid 40s. East Winds around 5 Mph. Chance of precipitation 20 percent.

Tonight 18 Dec Philadelphia

Rain. Not as cool with Lows in the lower 40s. Temperature rising into the mid 50s after midnight. Southeast Winds 5 to 10 Mph with Gusts up to 25 Mph, increasing to south 15 to 20 Mph with Gusts up to 40 Mph after midnight. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Allegheny West Temperature Statistics

December Temperature

Philadelphia, Philadelphia International Airport (9.3 miles)

  • Lowest 9 December, 2025

    18 °F

  • Average December

    33.8 °F

  • Highest 10 December, 2025

    46.9 °F

Climate (2020–Present)

Philadelphia, Philadelphia International Airport (9.3 miles)

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  • Average Low 2020–2025

    50.3 °F

  • Average 2020–2025

    58.4 °F

  • Average High 2020–2025

    66.9 °F
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