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Triangle Lake, MT Weather Forecast

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Triangle Lake, MT Weather Forecast

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Triangle Lake MT weather - Clear - 44°F
Clear
44°F
Updated 7:27 am
Feels Like 29°F
Humidity 39%
Wind W 10 mph
Barometer  30.22 in
Dew Point 21°F
Triangle Lake MT weather - Clear - 7°C
Clear
7°C
Updated 7:27 am
Feels Like -2°C
Humidity 39%
Wind W 16 km/h
Barometer  102.3 kPa
Dew Point -6°C
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Triangle Lake Weather Forecast

TODAY TONIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT COLUMBUS DAY MONDAY NIGHT
Triangle Lake, MT Weather - Today Sunny Triangle Lake, MT Weather - Tonight Mostly Clear Triangle Lake, MT Weather - Thursday Sunny Triangle Lake, MT Weather - Thursday Night Partly Cloudy Triangle Lake, MT Weather - Friday Mostly Sunny Triangle Lake, MT Weather - Friday Night Partly Cloudy Triangle Lake, MT Weather - Saturday Chance Of Showers Triangle Lake, MT Weather - Saturday Night Rain/Snow Showers Triangle Lake, MT Weather - Sunday Snow Showers Triangle Lake, MT Weather - Sunday Night Snow Showers Triangle Lake, MT Weather - Columbus Day Snow Showers Triangle Lake, MT Weather - Monday Night Snow Showers
Sunny Mostly Clear Sunny Partly Cloudy Mostly Sunny Partly Cloudy Chance of Showers Rain/Snow Showers Snow Showers Snow Showers Snow Showers Snow Showers
Hi: 75°FHi: 24°C
 Lo: 35°FLo: 2°C Hi: 71°FHi: 22°C
 Lo: 35°FLo: 2°C Hi: 71°FHi: 22°C
 Lo: 39°FLo: 4°C Hi: 61°FHi: 16°C
 Lo: 29°FLo: -2°C Hi: 49°FHi: 9°C
 Lo: 21°FLo: -6°C Hi: 49°FHi: 9°C
 Lo: 21°FLo: -6°C
POP: 50% POP: 80% POP: 90% POP: 80% POP: 50% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 350 AM MDT Wed Oct 07 2026 Triangle Lake, MT Weather - WeatherWorld.com

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Issued: 1248 AM MDT Wed Oct 7 2026

Key Messages

  • Very warm, dry and occasionally breezy through Friday. Fire concerns will remain elevated, and may be critical on Friday with increased winds and lower humidities.
  • Cold front arrives early Saturday, then much cooler Saturday night through Tuesday; this will be the coolest air mass yet of the fall.
  • Strong weather system arrives this weekend. Increasing confidence for mountains/foothills snow Saturday night to Monday, with rain and wet snow at lower elevations. Greatest potential for s...