St. Clair- Including the city of Port Huron 1045 AM EDT Fri Apr 19 2024 .REST OF TODAY...Mostly sunny. Highs in the upper 50s. West winds 10 to 20 mph with gusts up to 30 mph. .TONIGHT...Cooler. Mostly clear. Lows in the mid 30s. West winds 5 to 15 mph with gusts up to 25 mph. .SATURDAY...Partly cloudy. Highs in the upper 40s. West winds 10 to 15 mph with gusts up to 25 mph. .SATURDAY NIGHT...Partly cloudy in the evening then clearing. Areas of frost after midnight. Lows in the lower 30s. West winds 5 to 15 mph. .SUNDAY...Sunny. Highs in the upper 50s. West winds 10 to 15 mph with gusts up to 25 mph. .SUNDAY NIGHT...Clear. Areas of frost after midnight. Lows in the mid 30s. .MONDAY...Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 50s. .MONDAY NIGHT...Not as cool. Mostly cloudy. A slight chance of showers after midnight. Lows in the mid 40s. Chance of rain 20 percent. .TUESDAY...Showers likely. Highs in the upper 50s. Chance of rain 70 percent. .TUESDAY NIGHT...Mostly cloudy with a chance of showers. Lows in the mid 30s. Chance of rain 50 percent. .WEDNESDAY...Cooler. Partly cloudy in the morning then clearing. Highs in the mid 40s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 20s. .THURSDAY...Mostly sunny. Highs in the lower 50s. $$