McMillan Weather Forecast

    • 44
    • 71

    Becoming Sunny

    • 51
    • 70

    Mostly Cloudy

    • 53
    • 72

    Rain Showers Likely

    • 57
    • 69

    Rain Showers

    • 53
    • 72

    Chance Rain Showers

    • 50
    • 68

    Chance Rain Showers

Today 15 Sep Marathon

Partly sunny. Patchy fog in the morning. Highs in the lower 70s. West wind 10 to 20 Mph with Gusts to around 35 Mph.

Tonight 15 Sep Marathon

Warmer. Showers. Thunderstorms also possible. Nearly steady temperature in the mid 50s. South wind 10 to 15 Mph. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

McMillan Temperature Statistics

September Temperature

Marshfield, Marshfield Municipal Airport (6.8 miles)

  • Lowest 10 September, 2026

    48.7 °F

  • Average September

    70 °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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