Weather WorldNorthwestern Lake, MT Weather Forecast
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Northwestern Lake Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
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| Partly Cloudy | Patchy Fog | Patchy Fog | Mostly Clear | Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Hi: 70°FHi: 21°C | Lo: 36°FLo: 2°C | Hi: 66°FHi: 19°C | Lo: 35°FLo: 2°C | Hi: 70°FHi: 21°C | Lo: 36°FLo: 2°C | Hi: 76°FHi: 24°C | Lo: 40°FLo: 4°C | Hi: 70°FHi: 21°C | Lo: 36°FLo: 2°C | Hi: 66°FHi: 19°C | Lo: 36°FLo: 2°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 206 AM MDT Fri Oct 02 2026 
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Issued: 1252 AM MDT Fri Oct 2 2026
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KEY MESSAGES:- Warming and drying trend through Sunday; cool/cold valley lows with patchy frost.
- Westerly winds increase this afternoon and Monday with passing disturbances.
Mid- and high-level clouds will move through today as a weak disturbance passes along the Canadian border. A few light showers or virga may develop this morning as shown by high-resolution forecast models, but very little if any rain will reach the surface. Daytime temperatures will warm 5 to 10 degrees compared t...