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Flathead Lake Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
 |  |  |  | | | |  |  | | | |
| Clearing | Mostly Clear | Mostly Cloudy | Chance of Rain | Mostly Cloudy | Chance of Rain | Mostly Cloudy | Mostly Cloudy | Chance of Rain | Chance of Rain | Mostly Cloudy | Chance of Rain |
| Hi: 45°FHi: 7°C | Lo: 26°FLo: -3°C | Hi: 45°FHi: 7°C | Lo: 26°FLo: -3°C | Hi: 46°FHi: 8°C | Lo: 30°FLo: -1°C | Hi: 50°FHi: 10°C | Lo: 35°FLo: 2°C | Hi: 55°FHi: 13°C | Lo: 35°FLo: 2°C | Hi: 50°FHi: 10°C | Lo: 35°FLo: 2°C |
| POP: 20% | POP: 20% | POP: 30% | POP: 30% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 121 AM MST Wed Nov 04 2026 
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Issued: 259 AM MST Wed Nov 4 2026
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KEY MESSAGES:- Areas of fog or low clouds again possible tonight.
- Light precipitation is possible Thursday onward.
Near-Term (Today): Strong temperature inversions and moisture from regional waterways (like the 50-degree Flathead Lake) have locked in fog and low clouds across northwest to west-central Montana this morning. Expect these clouds to largely erode by this afternoon. However, clouds may linger in the Mission and Flathead Valleys and around Flathead Lake, which would keep hi...