Lake St. ClairWater Level & Temperature
Lake St. Clair water level & water temperature
Lake St. Clair water level is updated continuously from the operating agency. Typical level elevation is 575 ft. Live reading, 7-day trend, and multi-year history appear below as the data loads.
Lake St. Clair water temperature by month
Lake St. Clair surface water temperature averages from about 34°F in February to 78°F in July over the year, based on a 40-year USGS model (1980–2020). Cold-water caution applies in roughly half the year, when the typical temperature is below 60°F.
Jan
36°
Feb
34°
Mar
38°
Apr
47°
May
60°
Jun
71°
Jul
78°
Aug
78°
Sep
72°
Oct
60°
Nov
48°
Dec
39°
Typical surface temperatures (°F), modeled historical averages (USGS 185k-lake dataset, 1980–2020). Colors flag cold-water risk: blue/amber/red = cool, caution, danger. Live and recent readings appear above where a sensor is available.