Williamsport Weather Forecast

    • 51
    • 72

    Mostly Sunny

    • 58
    • 79

    Partly Sunny

    • 66
    • 83

    Slight Chance Rain Showers

    • 64
    • 86

    Rain Showers Likely

    • 57
    • 76

    Partly Sunny

    • 57
    • 77

    Partly Sunny

    • 60
    • 81

    Chance Rain Showers

Today 15 Jun Eastern Grant

Partly sunny. Highs in the lower 70s. Northwest Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 15 Jun Eastern Grant

Partly cloudy in the Evening, then becoming mostly clear. Patchy fog after midnight. Lows around 50. West Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Williamsport Temperature Statistics

June Temperature

Petersburg, Grant County Airport (16.2 miles)

  • Lowest 3 June, 2026

    44.4 °F

  • Average June

    71.5 °F

  • Highest 11 June, 2026

    92.8 °F

Climate (2021–Present)

Petersburg, Grant County Airport (16.2 miles)

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  • Average Low 2021–2026

    44.2 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    67.6 °F
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