Ottawa Weather Forecast

    • 39
    • 63

    Mostly Sunny

    • 31
    • 61

    Mostly Sunny

    • 32
    • 61

    Sunny

    • 35
    • 64

    Mostly Sunny

    • 41
    • 68

    Partly Sunny

    • 41
    • 65

    Partly Sunny

Today 22 Oct Montour

Sunny. Near steady temperature in the lower 60s. North Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 22 Oct Montour

Mostly clear. Lows in the upper 30s. North Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Ottawa Temperature Statistics

October Temperature

Williamsport - Lycoming County Airport (15.5 miles)

  • Lowest 18 October, 2026

    31.6 °F

  • Average October

    57.5 °F

  • Highest 13 October, 2026

    84.7 °F

Climate (2021–2026)

Williamsport - Lycoming County Airport (15.5 miles)

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  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    53 °F

  • Average High 2021–2026

    63.3 °F
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