Great Lakes Forecast
Issued by NWS
Issued by NWS
349 FZUS63 KDTX 300148 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 948 PM EDT Wed Apr 29 2026 Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. .SYNOPSIS...A diffuse low pressure system, 30.00, will very gradually move across the Great Lakes through the mid to late week period. This will bring periods of isolated showers and will generally maintain lighter northwest flow. LCZ460-301000- Lake St Clair- 948 PM EDT Wed Apr 29 2026 .REST OF TONIGHT...North winds 10 to 15 knots diminishing to 5 to 10 knots after midnight. Mostly cloudy. Showers diminishing after midnight. Waves 2 feet or less. .THURSDAY...Northwest winds 10 to 15 knots diminishing to 5 to 10 knots in the late morning and afternoon. Partly sunny. Waves 2 feet or less. .THURSDAY NIGHT...North winds 5 to 10 knots. Partly cloudy. Waves 2 feet or less. .FRIDAY...Northwest winds 5 to 10 knots increasing to 10 to 15 knots early in the afternoon. Partly sunny. Waves 2 feet or less. .FRIDAY NIGHT...North winds 10 to 15 knots diminishing to 5 to 10 knots in the late evening and overnight. Partly cloudy. Waves 2 feet or less. .SATURDAY...Northwest winds 5 to 10 knots. Mostly sunny in the morning becoming partly cloudy. Waves 2 feet or less. .SUNDAY...Southwest winds 10 to 15 knots. Partly cloudy. A chance of light showers. Waves 2 feet or less. .MONDAY...West winds 10 to 15 knots. Partly cloudy. A chance of light showers. Waves 2 feet or less. $$ BT Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes