Weather WorldLappi Lake, MT Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Lappi Lake Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
 |  |  |  |  | | |  | | | | |
| Mostly Sunny | Partly Cloudy | Partly Cloudy | Chance of Rain | Rain and Snow | Rain and Snow | Rain and Snow | Chance of Snow | Chance of Snow | Partly Cloudy | Partly Cloudy | Rain and Snow |
| Hi: 70°FHi: 21°C | Lo: 40°FLo: 4°C | Hi: 70°FHi: 21°C | Lo: 36°FLo: 2°C | Hi: 46°FHi: 8°C | Lo: 26°FLo: -3°C | Hi: 36°FHi: 2°C | Lo: 22°FLo: -6°C | Hi: 45°FHi: 7°C | Lo: 26°FLo: -3°C | Hi: 50°FHi: 10°C | Lo: 30°FLo: -1°C |
| POP: 50% | POP: 80% | POP: 90% | POP: 70% | POP: 50% | POP: 20% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 157 AM MDT Thu Oct 08 2026 
Lappi Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Lappi Lake Weather Map
Lappi Lake Quick Facts
Lappi Lake Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 439 AM MDT Thu Oct 8 2026
Discussion
...
KEY MESSAGES:- Gusty west winds Friday afternoon creating near-critical fire weather conditions across Southwest Montana, choppy conditions at area lakes, and hazardous conditions for empty, high-profile vehicles on I-90 Deer Lodge to Butte, and I-15 south of Butte.
- Strong Northeast winds develop Saturday causing choppy waves that could pose a danger to docks and boats on the southwestern portion of Flathead Lake. Isolated power outages are possible across northwest Montana through S...