Line Mountain Weather Forecast

    • -2
    • 17

    Decreasing Clouds

    • -5
    • 15

    Partly Sunny

    • 3
    • 17

    Partly Sunny

    • 10
    • 21

    Partly Sunny

    • 11
    • 29

    Partly Sunny

    • 13
    • 30

    Partly Sunny

Today 29 Jan Northumberland

Partly sunny this Morning, then becoming mostly cloudy. Flurries. Highs around 20. West Winds 5 to 10 Mph with Gusts up to 20 Mph. Wind chill Values as low as 8 below this morning.

Tonight 29 Jan Northumberland

Partly cloudy in the Evening, then clearing. Cold with Lows around 5 below. Northwest Winds around 5 Mph. Gusts up to 20 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Line Mountain Temperature Statistics

January Temperature

Selinsgrove Penn Valley Airport (17.4 miles)

  • Lowest 21 January, 2026

    0 °F

  • Average January

    27 °F

  • Highest 7 January, 2026

    50 °F

Climate (2021–Present)

Selinsgrove Penn Valley Airport (17.4 miles)

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  • Average Low 2021–2026

    42.3 °F

  • Average 2021–2026

    52.6 °F

  • Average High 2021–2026

    63 °F
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