McMillan Weather Forecast

    • 58
    • 71

    Rain Showers

    • 57
    • 70

    Chance Rain Showers

    • 42
    • 66

    Slight Chance Rain Showers

    • 40
    • 63

    Partly Sunny

    • 45
    • 63

    Partly Sunny

    • 37
    • 61

    Mostly Sunny

Today 29 Sep Marathon

Mostly cloudy. Highs in the lower 70s. South wind 10 to 15 Mph.

Tonight 29 Sep Marathon

Showers. Lows in the upper 50s. South wind 10 to 15 Mph. Chance of rain near 100 percent.

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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

    63.2 °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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