Yellowstone LakeWater Level & Temperature
Yellowstone Lake water level & water temperature
Yellowstone Lake water level is updated continuously from USGS gauge 06186500 (NGVD29). Typical level elevation is 7733 ft. Live reading, 7-day trend, and multi-year history appear below as the data loads.
Yellowstone Lake water temperature by month
Yellowstone Lake surface water temperature averages from about 34°F in March to 64°F in August 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
34°
Apr
36°
May
45°
Jun
52°
Jul
60°
Aug
64°
Sep
61°
Oct
53°
Nov
44°
Dec
38°
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.