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St. Clair Lake, MI Weather Forecast

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St. Clair Lake, MI Weather Forecast

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St. Clair Lake MI weather - Lightning Observed - 69°F
Lightning Observed
69°F
Updated 1:51 pm
Feels Like 63°F
Humidity 64%
Wind WNW 7 mph
Barometer  29.77 in
Dew Point 57°F
St. Clair Lake MI weather - Lightning Observed - 21°C
Lightning Observed
21°C
Updated 1:51 pm
Feels Like 17°C
Humidity 64%
Wind WNW 11 km/h
Barometer  100.8 kPa
Dew Point 14°C
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St. Clair Lake Weather Forecast

REST OF TODAY TONIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT
St. Clair Lake, MI Weather - Rest Of Today Chance Of Showers St. Clair Lake, MI Weather - Tonight Becoming Cloudy St. Clair Lake, MI Weather - Sunday Rain Showers St. Clair Lake, MI Weather - Sunday Night Clear St. Clair Lake, MI Weather - Monday Chance Of Showers St. Clair Lake, MI Weather - Monday Night Chance Of T-Storm St. Clair Lake, MI Weather - Tuesday Partly Cloudy St. Clair Lake, MI Weather - Tuesday Night Mostly Clear St. Clair Lake, MI Weather - Wednesday Partly Cloudy St. Clair Lake, MI Weather - Wednesday Night Chance Of Showers St. Clair Lake, MI Weather - Thursday Partly Cloudy St. Clair Lake, MI Weather - Thursday Night Mostly Clear
Chance of Showers Becoming Cloudy Rain Showers Clear Chance of Showers Chance of T-Storm Partly Cloudy Mostly Clear Partly Cloudy Chance of Showers Partly Cloudy Mostly Clear
Hi: 71°FHi: 22°C
 Lo: 47°FLo: 8°C Hi: 62°FHi: 17°C
 Lo: 39°FLo: 4°C Hi: 65°FHi: 18°C
 Lo: 51°FLo: 11°C Hi: 72°FHi: 22°C
 Lo: 45°FLo: 7°C Hi: 66°FHi: 19°C
 Lo: 45°FLo: 7°C Hi: 67°FHi: 19°C
 Hi: 70°FHi: 21°C
Lo: 45°FLo: 7°C
POP: 20% POP: 20% POP: 20% POP: 100% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 1137 AM EDT Sat Sep 12 2026 St. Clair Lake, MI Weather - WeatherWorld.com

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St. Clair Lake Forecast Discussion

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Issued: 719 AM EDT Sat Sep 12 2026

Key Messages

  • A batch of showers and storms moves through the western UP early this morning, potentially redeveloping in the eastern UP this afternoon.
  • The potential for active weather returns early next week in the form of widespread rain and gusty winds.

Discussion

... Issued at 224 AM EDT Sat Sep 12 2026

Early this morning, water vapor reveals midlevel troughing over the north-central CONUS, extending from a midlevel low over the Canadian Prairie. At the surface, low pressure is tracking through f...