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Lake McDonald, MT Weather Forecast

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Lake McDonald, MT Weather Forecast

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Lake McDonald MT weather - Clear - 37°F
Clear
37°F
Updated 9:24 am
Feels Like 40°F
Humidity 92%
Wind N 0 mph
Barometer  30.14 in
Dew Point 35°F
Lake McDonald MT weather - Clear - 3°C
Clear
3°C
Updated 9:24 am
Feels Like 4°C
Humidity 92%
Wind N 0 km/h
Barometer  102 kPa
Dew Point 2°C
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Lake McDonald Weather Forecast

TODAY TONIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT COLUMBUS DAY MONDAY NIGHT TUESDAY TUESDAY NIGHT
Lake McDonald, MT Weather - Today Partly Cloudy Lake McDonald, MT Weather - Tonight Partly Cloudy Lake McDonald, MT Weather - Friday Chance Of Rain Lake McDonald, MT Weather - Friday Night Snow Lake McDonald, MT Weather - Saturday Rain And Snow Lake McDonald, MT Weather - Saturday Night Blowing Snow Lake McDonald, MT Weather - Sunday Chance Of Snow Lake McDonald, MT Weather - Sunday Night Chance Of Snow Lake McDonald, MT Weather - Columbus Day Mostly Sunny Lake McDonald, MT Weather - Monday Night Mostly Clear Lake McDonald, MT Weather - Tuesday Mostly Sunny Lake McDonald, MT Weather - Tuesday Night Rain And Snow
Partly Cloudy Partly Cloudy Chance of Rain Snow Rain and Snow Blowing Snow Chance of Snow Chance of Snow Mostly Sunny Mostly Clear Mostly Sunny Rain and Snow
Hi: 65°FHi: 18°C
 Lo: 40°FLo: 4°C Hi: 60°FHi: 16°C
 Lo: 35°FLo: 2°C Hi: 40°FHi: 4°C
 Lo: 25°FLo: -4°C Hi: 35°FHi: 2°C
 Lo: 23°FLo: -5°C Hi: 40°FHi: 4°C
 Lo: 26°FLo: -3°C Hi: 46°FHi: 8°C
 Lo: 30°FLo: -1°C
POP: 30% POP: 90% POP: 70% POP: 90% POP: 30% POP: 30% POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 157 AM MDT Thu Oct 08 2026 Lake McDonald, MT Weather - WeatherWorld.com

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Issued: 439 AM MDT Thu Oct 8 2026

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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...