Williamsport Weather Forecast

    • 59
    • 79

    Slight Chance Rain

    • 40
    • 81

    Rain

    • 32
    • 46

    Chance Snow

    • 37
    • 60

    Partly Sunny

    • 39
    • 56

    Mostly Cloudy

    • 42
    • 67

    Rain Showers Likely

Today 10 Mar Eastern Grant

Sunny with a 20 percent chance of rain. Highs in the upper 70s. Southwest Winds around 5 Mph.

Tonight 10 Mar Eastern Grant

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 50s. Southwest Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Williamsport Temperature Statistics

March Temperature

Petersburg, Grant County Airport (16.2 miles)

  • Lowest 2 March, 2026

    27.5 °F

  • Average March

    49.7 °F

  • Highest 7 March, 2026

    82 °F

Climate (2021–Present)

Petersburg, Grant County Airport (16.2 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    44.2 °F

  • Average 2021–2026

    55.4 °F

  • Average High 2021–2026

    67.5 °F
Get WillyWeather+ to remove ads