MontanaNatural lake, 3,904 acres, Glacier County
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Sailing
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Outlook. Monday: E wind 0 to 2 kt, gusts to 5 kt, high near 46°F. Tuesday: WSW wind 14 to 16 kt, gusts to 29 kt, high near 38°F, 76% chance of rain.
7-day wind forecastLoads when you scroll here
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Last hour of NOAA MRMS radar, 1 km resolution. Map data © OpenStreetMap contributors, OpenMapTiles, OpenFreeMap.
SatelliteLoading NASA SWOT passes
000.00ft above sea level
Measured from orbit by NASA's SWOT satellite each time it passes over the lake, usually every 10 to 21 days, to within about half a foot. Elevation is above sea level (EGM2008), not a gauge reading at a dock.
Background reading: Saint Mary Lake on Wikipedia
Saint Mary Lake covers about 3,904 acres in Glacier County, Montana and is classed as a natural lake. The surface sits about 4,485 ft above sea level and the deepest point is roughly 328 ft down.
We have not matched Saint Mary Lake to a public level gauge, so the water level on this page comes from NASA's SWOT satellite, which measures the lake surface from orbit on each pass. Wind, gusts and rain come from the National Weather Service forecast grid that covers the water.
It is big enough for a proper sail but small enough that waves rarely get serious. Gusts off the shoreline are usually the bigger story than wave height.
The go or no-go calls above are a starting point, not a guarantee. Read how we score conditions, and always check local rules and posted warnings before you launch.
The National Weather Service forecast for the lake from October 26: Monday: E wind 0 to 2 kt, gusts to 5 kt, high near 46°F. The panel at the top of this page refreshes the current wind, gusts and direction when you open it and turns them into a call for sailing, paddling, power boating and fishing.
We have not matched Saint Mary Lake to a public level gauge, so the water level card on this page uses NASA's SWOT satellite, which measures the lake surface every time it passes overhead, usually every 10 to 21 days. The card shows the latest pass, its date and the change since the pass before.
Saint Mary Lake covers about 3,904 acres (6.1 square miles) of surface water.
The deepest point of Saint Mary Lake is roughly 328 ft.
If Saint Mary is blown out, these are the closest alternatives. Tap through for their conditions.