Great Lakes Forecast
Issued by NWS
Issued by NWS
143 FZUS63 KDTX 220255 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 955 PM EST Sat Feb 21 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...Low pressure, averaging 29.90 inches, remains over Lake Huron today before phasing with a strong coastal Atlantic low tonight. Widespread snow shower activity today diminishes overnight as northwest flow ramps up into Monday. LCZ460-221100- Lake St Clair- 955 PM EST Sat Feb 21 2026 .REST OF TONIGHT...West winds 5 to 10 knots. Mostly cloudy. A chance of light snow after midnight. .SUNDAY...Northwest winds 5 to 10 knots increasing to 10 to 15 knots late in the afternoon. Mostly cloudy. A chance of light snow until late afternoon...then light snow likely late in the afternoon. .SUNDAY NIGHT...North winds 10 to 15 knots becoming northwest 20 to 25 knots. Mostly cloudy with a chance of light snow. .MONDAY...North winds 20 to 25 knots with gusts to 30 knots. Mostly cloudy. A Small Craft Advisory may be needed. .MONDAY NIGHT...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots after midnight. Mostly cloudy early in the evening becoming partly cloudy. .TUESDAY...West winds 5 to 10 knots becoming south 10 to 15 knots in the afternoon...then increasing to 15 to 20 knots in the evening. Partly sunny in the morning becoming mostly cloudy. A chance of light snow in the afternoon. Light snow likely in the evening. .WEDNESDAY...West winds 15 to 20 knots. Mostly cloudy. Light snow likely and a chance of light rain. .THURSDAY...Northwest winds 15 to 20 knots. Partly cloudy. A chance of light rain and snow. Waves omitted due to ice coverage. $$ DRK Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes