Orillia Weather Forecast

    • 46
    • 65

    Becoming Sunny

    • 54
    • 66

    Mostly Cloudy

    • 54
    • 64

    Rain Likely

    • 52
    • 66

    Mostly Cloudy

    • 52
    • 66

    Mostly Cloudy

    • 51
    • 65

    Partly Sunny

Today 27 Sep Lowlands of Pierce and Southern King Counties

Mostly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the upper 50s to mid 60s. Northeast wind 10 to 15 Mph becoming north in the afternoon.

Tonight 27 Sep Lowlands of Pierce and Southern King Counties

Mostly clear. Lows in the 40s. North wind 10 to 15 Mph in the evening becoming light.

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  • Temperature Real-Time

Orillia Temperature Statistics

September Temperature

Seattle, Seattle-Tacoma International Airport (3.1 miles)

  • Lowest 20 September, 2026

    50.6 °F

  • Average September

    61.9 °F

  • Highest 9 September, 2026

    78.7 °F

Climate (2021–2026)

Seattle, Seattle-Tacoma International Airport (3.1 miles)

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  • Average Low 2021–2026

    46.6 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    61.3 °F
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