Grays Lake
Water data, weather and recent trends from public monitoring sources.
Live water-level data is not verified for this lake yet
Weather and alerts remain available. We are adding additional federal, reservoir-operator and state sources rather than filling missing water measurements with estimates.
Today's Fishing Outlook
Grays Lake · Thursday, October 8, 2026
Generally favorable weather for fishing, particularly around dawn and dusk.
Heuristic weather and daylight outlook — not a fish-bite prediction. All times are in America/Boise. Check local boating regulations and advisories.
National Weather Service forecast
Grays Lake conditions: how to use this page
This page combines publicly available lake water-level readings, including reservoir-operator observations where verified, with National Weather Service data near Grays Lake in Idaho. A missing value does not mean the lake has no level or temperature information; it means the available public source did not return a usable recent reading. When an operator only publishes an older observation, its true date is shown rather than calling it a live reading.
Water level and temperature can vary by gauge location, sensor depth, wind, inflow, dam operations and weather. Use these readings for trip planning, then follow posted notices, marina guidance and local authorities for on-water decisions.
The USGS monitoring record associated with this page lists a drainage area of approximately 137 square miles. This is station metadata, not the lake's surface area.