Weather forecast in Flathead Lake (MT)

This data display current weather and forecast for the coming days in Flathead Lake. In addition to temperature, wind, humidity and pressure, we include data on the probability of precipitation so you can have all the information about your destination before your trip.

Flathead Lake current temperature and weather

October 1, 2025

Night
52.7°F Feels like: 50.7°F	Clear
	Wind: 6 mph (9.7 Km/h) S Pressure: 26.77 inHg (907 hPa) Humidity: 67%	Precip. prob.: 0% Visibility: 6 mi (10 km) UV index: 0
Morning
54.3°F Feels like: 52.2°F	Sunny
	Wind: 6.5 mph (10.4 Km/h) S Pressure: 26.88 inHg (910 hPa) Humidity: 72%	Precip. prob.: 0% Visibility: 6 mi (10 km) UV index: 0.2
Day
65.3°F Feels like: 65.3°F	Sunny
	Wind: 7.4 mph (11.9 Km/h) SW Pressure: 27.07 inHg (917 hPa) Humidity: 41%	Precip. prob.: 0% Visibility: 6 mi (10 km) UV index: 1.4
Evening
54.9°F Feels like: 55.2°F	Partly Cloudy
	Wind: 3.4 mph (5.4 Km/h) E Pressure: 27.43 inHg (929 hPa) Humidity: 49%	Precip. prob.: 0% Visibility: 6 mi (10 km) UV index: 0

In order for you to be able to estimate what the weather is like in Flathead Lake throughout the year, we provide monthly data for the last few years. Select the month you are interested in.

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Our report for Flathead Lake is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.