McMillan Weather Forecast

    • 40
    • 62

    Becoming Sunny

    • 42
    • 64

    Mostly Sunny

    • 45
    • 64

    Mostly Cloudy

    • 45
    • 66

    Mostly Cloudy

    • 48
    • 65

    Chance Rain Showers

    • 49
    • 68

    Slight Chance Rain Showers

Today 22 Sep Marathon

Mostly sunny. Highs in the lower 60s. East wind 10 to 15 Mph.

Tonight 22 Sep Marathon

Clear. Lows in the lower 40s. East wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

McMillan Temperature Statistics

September Temperature

Marshfield, Marshfield Municipal Airport (6.8 miles)

  • Lowest 14 September, 2026

    42.7 °F

  • Average September

    65.6 °F

  • Highest 1 September, 2026

    90.6 °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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