Williamsport Weather Forecast

    • 28
    • 42

    Partly Sunny

    • 36
    • 52

    Mostly Cloudy

    • 46
    • 60

    Rain Showers Likely

    • 46
    • 66

    Mostly Cloudy

    • 42
    • 71

    Chance Rain

    • 29
    • 54

    Partly Sunny

Today 18 Mar Washington

Mostly sunny. Highs around 40. North Winds around 5 Mph, becoming south this afternoon.

Tonight 18 Mar Washington

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 20s. Southeast Winds around 5 Mph.

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  • Temperature Real-Time

Williamsport Temperature Statistics

March Temperature

Hagerstown, Washington County Regional Airport (8.7 miles)

  • Lowest 2 March, 2026

    26.7 °F

  • Average March

    49.8 °F

  • Highest 10 March, 2026

    82 °F

Climate (2021–Present)

Hagerstown, Washington County Regional Airport (8.7 miles)

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  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    56.8 °F

  • Average High 2021–2026

    65.9 °F
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