MontanaNatural lake, 126,024 acres, Flathead County, Lake County
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2,891.62ft
Down 0.28 ft this week
Sailing
CheckingReading the forecast
Kayak and SUP
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Power boating
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Fishing
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Outlook. Monday: NNW wind 1 to 7 kt, gusts to 9 kt, high near 49°F, 85% chance of rain. Tuesday: SSW wind 8 to 16 kt, gusts to 20 kt, high near 46°F, 82% 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.
2,891.62ft above sea level
-0.28 ft in 7 days0.06 ft below the October normal
Reading from Oct 26, 2026. Shaded band: range of October averages on record; dashed line is the typical level.
Flathead Lake was at 2,891.62 ft on October 26, falling 0.28 ft over the past week. That is near normal for October: the typical October level is 2,891.68 ft, so the lake is 0.06 ft below its usual mark.
Background reading: Flathead Lake on Wikipedia
Flathead Lake is a 126,024-acre natural lake in Flathead County, Lake County, Montana. The surface sits about 2,894 ft above sea level and the deepest point is roughly 371 ft down.
We read the level from USGS gauge 12371550, listed as Flathead Lake at Polson MT. Wind and weather come from the National Weather Service grid cell over the lake, so the numbers describe open water rather than the nearest airport.
On a lake this size the wind has miles of open water to work with, so a 15 kt breeze can stack up a steep chop in the main basin while sheltered coves stay flat.
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: NNW wind 1 to 7 kt, gusts to 9 kt, high near 49°F, 85% chance of rain. 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.
Flathead Lake was at 2,891.62 ft on October 26, falling 0.28 ft over the past week. That is near normal for October: the typical October level is 2,891.68 ft, so the lake is 0.06 ft below its usual mark.
Flathead Lake covers about 126,024 acres (197 square miles) of surface water.
The deepest point of Flathead Lake is roughly 371 ft.
If Flathead is blown out, these are the closest alternatives. Tap through for their conditions.