Straight Lake, MT Weather Forecast
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Straight Lake Weather Forecast
| TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
| Rain | Patchy Fog | Patchy Fog | Rain and Snow | Rain and Snow | Patchy Fog | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Lo: 30°FLo: -1°C | Hi: 50°FHi: 10°C | Lo: 35°FLo: 2°C | Hi: 45°FHi: 7°C | Lo: 30°FLo: -1°C | Hi: 46°FHi: 8°C | Lo: 30°FLo: -1°C | Hi: 50°FHi: 10°C | Lo: 30°FLo: -1°C | Hi: 50°FHi: 10°C | Lo: 30°FLo: -1°C | Hi: 50°FHi: 10°C |
| POP: 50% | POP: 80% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1256 PM MDT Fri Oct 30 2026 

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Issued: 1226 PM MDT Fri Oct 30 2026
Discussion
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KEY MESSAGES:- Valley rain and mountain snow Sunday into Monday morning, focused along and south of I-90.
- High pressure bringing stable conditions and valley fog next week.
GOES Satellite imagery this afternoon highlights a closed low spinning off the Oregon and Washington coastline, with southerly flow aloft sending mid-high level clouds over the Northern Rockies. Regional radar imagery shows shower activity across south-central Idaho, with high-resolution guidance suggesting this ac...
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