Line Mountain Weather Forecast

    • 31
    • 57

    Mostly Sunny

    • 31
    • 56

    Mostly Sunny

    • 33
    • 55

    Partly Sunny

    • 39
    • 56

    Rain Likely

    • 41
    • 53

    Rain

    • 39
    • 53

    Chance Rain Showers

    • 36
    • 54

    Mostly Cloudy

Today 26 Oct Northumberland

Mostly sunny. Near steady temperature in the mid 50s. North Winds around 5 Mph.

Tonight 26 Oct Northumberland

Mostly clear. Lows in the lower 30s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Line Mountain Temperature Statistics

October Temperature

Selinsgrove Penn Valley Airport (17.4 miles)

  • Lowest 10 October, 2025

    32 °F

  • Average October

    54.2 °F

  • Highest 5 October, 2025

    82.9 °F

Climate (2020–Present)

Selinsgrove Penn Valley Airport (17.4 miles)

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  • Average Low 2020–2025

    42.5 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    63.2 °F
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