McMillan Weather Forecast

    • 40
    • 63

    Becoming Sunny

    • 43
    • 67

    Mostly Sunny

    • 45
    • 68

    Mostly Sunny

    • 49
    • 64

    Mostly Cloudy

    • 50
    • 66

    Mostly Cloudy

    • 42
    • 63

    Partly Sunny

Today 20 Oct Marathon

Partly cloudy in the morning then clearing. Patchy fog in the morning. Highs in the lower 60s. Light and variable wind becoming south 5 to 10 Mph in the afternoon.

Tonight 20 Oct Marathon

Mostly clear. Lows in the upper 30s. Light and variable wind.

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McMillan Temperature Statistics

October Temperature

Marshfield, Marshfield Municipal Airport (6.8 miles)

  • Lowest 17 October, 2026

    28.9 °F

  • Average October

    55.4 °F

  • Highest 10 October, 2026

    83.6 °F

Climate (2021–2026)

Marshfield, Marshfield Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    36.7 °F

  • Average 2021–2026

    46.1 °F

  • Average High 2021–2026

    55.4 °F
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