Williamsport Weather Forecast

    • 40
    • 55

    Mostly Cloudy

    • 34
    • 71

    Rain Showers

    • 27
    • 46

    Partly Sunny

    • 32
    • 49

    Partly Sunny

    • 35
    • 54

    Chance Rain/Snow

    • 36
    • 57

    Rain Showers Likely

    • 25
    • 47

    Partly Sunny

Today 21 Mar Southern Lycoming

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

Tonight 21 Mar Southern Lycoming

Mostly cloudy. A slight chance of Showers after midnight. Mild. Lows in the lower 40s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Williamsport Temperature Statistics

March Temperature

Williamsport - Lycoming County Airport (3.7 miles)

  • Lowest 2 March, 2026

    17.7 °F

  • Average March

    41.4 °F

  • Highest 10 March, 2026

    77.6 °F

Climate (2021–Present)

Williamsport - Lycoming County Airport (3.7 miles)

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  • Average Low 2021–2026

    43.6 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    63.2 °F
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