Parnassus Weather Forecast

    • 31
    • 44

    Mostly Cloudy

    • 37
    • 51

    Rain

    • 32
    • 45

    Mostly Cloudy

    • 42
    • 55

    Rain

    • 38
    • 56

    Rain Likely

    • 27
    • 49

    Chance Rain/Snow

Today 5 Jan Westmoreland

Partly sunny this Morning, then becoming partly cloudy. Highs in the mid 40s. South Winds 5 to 10 Mph.

Tonight 5 Jan Westmoreland

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

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  • Temperature Real-Time

Parnassus Temperature Statistics

January Temperature

Pittsburgh - Allegheny County Airport (16.2 miles)

  • Lowest 1 January, 2026

    12.9 °F

  • Average January

    18.4 °F

  • Highest 1 January, 2026

    30.9 °F

Climate (2021–Present)

Pittsburgh - Allegheny County Airport (16.2 miles)

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    63.3 °F
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