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St Clair County, MI Weather Forecast

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St Clair County, MI Weather Forecast

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St Clair County MI weather - Partly Cloudy - 71°F
Partly Cloudy
71°F
Updated 10:26 am
Feels Like 67°F
Humidity 68%
Wind NE 8 mph
Barometer  30.11 in
Dew Point 60°F
St Clair County MI weather - Partly Cloudy - 22°C
Partly Cloudy
22°C
Updated 10:26 am
Feels Like 19°C
Humidity 68%
Wind NE 13 km/h
Barometer  101.9 kPa
Dew Point 16°C
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St Clair County Weather Forecast

TODAY TONIGHT LABOR DAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT
St Clair County, MI Weather - Today Clearing St Clair County, MI Weather - Tonight Patchy Fog St Clair County, MI Weather - Labor Day Mostly Sunny St Clair County, MI Weather - Monday Night Patchy Fog St Clair County, MI Weather - Tuesday Partly Cloudy St Clair County, MI Weather - Tuesday Night Chance Of Showers St Clair County, MI Weather - Wednesday Chance Of Showers St Clair County, MI Weather - Wednesday Night Partly Cloudy St Clair County, MI Weather - Thursday Partly Cloudy St Clair County, MI Weather - Thursday Night Partly Cloudy St Clair County, MI Weather - Friday Mostly Sunny St Clair County, MI Weather - Friday Night Mostly Clear
Clearing Patchy Fog Mostly Sunny Patchy Fog Partly Cloudy Chance of Showers Chance of Showers Partly Cloudy Partly Cloudy Partly Cloudy Mostly Sunny Mostly Clear
Hi: 75°FHi: 24°C
 Lo: 55°FLo: 13°C Hi: 75°FHi: 24°C
 Lo: 55°FLo: 13°C Hi: 81°FHi: 27°C
 Lo: 69°FLo: 21°C Hi: 85°FHi: 29°C
 Lo: 61°FLo: 16°C Hi: 75°FHi: 24°C
 Lo: 55°FLo: 13°C Hi: 75°FHi: 24°C
 Lo: 55°FLo: 13°C
POP: 30% POP: 50%
POP = Probability of Precipitation.
Weather Outlook Updated: 301 AM EDT Sun Sep 06 2026 St Clair County, MI Weather - WeatherWorld.com

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Issued: 550 AM EDT Sun Sep 6 2026

Key Messages

  • Seasonable temperatures with lower humidity with exist through early next week.
  • Next chance of showers and thunderstorms arrives Tuesday night into Wednesday.

Aviation

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High pressure over the region will result in VFR conditions through the day. Clear skies early this morning will become at least SCT with diurnal cu with potentially on hour or two of BKN coverage before the dry air can scour them out this evening. Clear skies and calm winds tonight will again lead to patches of shall...