Lake St. Clair
Forecast
Marine Forecast
Issued 10:30 AM EDT 17 July 2025
Today Tonight and Friday.
Strong wind warning in effect.
Wind west 20 knots diminishing to northwest 15 near noon then veering to north 15 early this evening. Wind diminishing to northeast 10 late overnight then becoming light near noon Friday. Wind becoming south 10 Friday evening.
Waves
Issued 10:30 AM EDT 17 July 2025
Today Tonight and Friday.
Waves 0.5 metres subsiding to less than 0.5 early Friday
morning.
Extended Forecast
Issued 03:00 AM EDT 17 July 2025
Saturday
Wind light.
Sunday
Wind light becoming north 15 knots.
Monday
Wind light.
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Weather Conditions
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Ice Conditions
*Ice Forecast and Warnings also apply to U.S. waters
Ice Forecasts
Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.Warnings
Warnings (In effect)
Strong wind warning in effect
Lake St. Clair
Issued 12:25 PM EDT 17 July 2025'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.
Synopsis
Technical Marine Synopsis
Issued 10:30 AM EDT 17 July 2025 Today Tonight and Friday At 10:30 a.m. EDT today low 1003 mb located southeast of LakeNipissing.
By 10:30 a.m. EDT Friday low 994 mb located over eastern Quebec.
At 10:30 a.m. EDT today high 1022 mb located over Minnesota.
By 10:30 a.m. EDT Friday high 1022 mb located over southern
Lake Huron.
Great Lakes - Lake Erie and Lake Ontario Area
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