McMillan Weather Forecast

    • 64
    • 75

    Rain Showers

    • 49
    • 77

    Partly Sunny

    • 51
    • 73

    Mostly Sunny

    • 57
    • 79

    Rain Showers Likely

    • 50
    • 75

    Slight Chance Thunderstorms

    • 49
    • 70

    Chance Rain Showers

Today 8 Sep Marathon

Humid. Cloudy. Showers and a chance of Thunderstorms in the Morning, then a chance of Showers and a slight chance of Thunderstorms in the afternoon. Highs in the middle 70s. South wind 10 to 15 Mph. Chance of rain 90 percent.

Tonight 8 Sep Marathon

Mostly cloudy with a chance of Showers and Thunderstorms. Nearly steady temperature in the lower 60s. South wind 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

McMillan Temperature Statistics

September Temperature

Marshfield, Marshfield Municipal Airport (6.8 miles)

  • Lowest 1 September, 2026

    62.7 °F

  • Average September

    74.2 °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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