Lavina, MT Weather Forecast
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Lavina Weather Forecast
| REST OF TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
| Mostly Cloudy | Patchy Fog | Patchy Fog | Mostly Clear | Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear |
| Hi: 65°FHi: 18°C | Lo: 49°FLo: 9°C | Hi: 70°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 79°FHi: 26°C | Lo: 50°FLo: 10°C | Hi: 79°FHi: 26°C | Lo: 49°FLo: 9°C | Hi: 79°FHi: 26°C | Lo: 50°FLo: 10°C | Hi: 81°FHi: 27°C | Lo: 50°FLo: 10°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 904 AM MDT Sun Sep 20 2026 

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Issued: 448 AM MDT Sun Sep 20 2026
Key Messages
- Flood Watch in effect through Sunday for central and eastern portions of the forecast area. Heaviest rain shifts eastward through the day.
- Patchy fog this morning and again overnight tonight into Monday AM. Dense fog is possible early Monday.
- Warmer and drier for the work week.
Discussion
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Next 7 Days...
The upper level low is slowly progressing through Central WY tonight with an ill-defined surface low roughly vertically stacked. The flow around this feature continues to advect plain...
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