Port Huron Weather Forecast

    • 54
    • 67

    Rain Showers

    • 51
    • 66

    Slight Chance Rain Showers

    • 50
    • 63

    Slight Chance Rain Showers

    • 51
    • 63

    Chance Rain Showers

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    • 63

    Chance Rain Showers

Today 19 Sep St. Clair

Showers likely in the Morning, then Showers likely and a slight chance of Thunderstorms in the afternoon. Highs in the upper 60s. Southeast Winds up to 10 Mph. Chance of rain 70 percent.

Tonight 19 Sep St. Clair

Cloudy. Showers likely and a chance of Thunderstorms in the Evening, then a chance of Showers after midnight. Lows in the mid 50s. East Winds up to 10 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Port Huron Temperature Statistics

September Temperature

St Clair County International Airport (6.8 miles)

  • Lowest 14 September, 2026

    48.2 °F

  • Average September

    68.7 °F

  • Highest 2 September, 2026

    95 °F

Climate (2021–2026)

St Clair County International Airport (6.8 miles)

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  • Average Low 2021–2026

    39.8 °F

  • Average 2021–2026

    49.5 °F

  • Average High 2021–2026

    58.8 °F
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