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Boulder, MT Weather Forecast

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Boulder, MT Weather Forecast

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Boulder MT weather - Clear - 58°F
Clear
58°F
Updated 8:06 pm
Feels Like 46°F
Humidity 53%
Wind WNW 8 mph
Barometer  30.04 in
Dew Point 41°F
Boulder MT weather - Clear - 14°C
Clear
14°C
Updated 8:06 pm
Feels Like 8°C
Humidity 53%
Wind WNW 13 km/h
Barometer  101.7 kPa
Dew Point 5°C
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Boulder Weather Forecast

TONIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY MONDAY MONDAY NIGHT
Boulder, MT Weather - Tonight Partly Cloudy Boulder, MT Weather - Wednesday Mostly Sunny Boulder, MT Weather - Wednesday Night Partly Cloudy Boulder, MT Weather - Thursday Mostly Sunny Boulder, MT Weather - Thursday Night Chance Of T-Storm Boulder, MT Weather - Friday Chance Of T-Storm Boulder, MT Weather - Friday Night Chance Of T-Storm Boulder, MT Weather - Saturday Chance Of T-Storm Boulder, MT Weather - Saturday Night Mostly Clear Boulder, MT Weather - Sunday Mostly Clear Boulder, MT Weather - Monday Mostly Clear Boulder, MT Weather - Monday Night Partly Cloudy
Partly Cloudy Mostly Sunny Partly Cloudy Mostly Sunny Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of T-Storm Mostly Clear Mostly Clear Mostly Clear Partly Cloudy
Lo: 39°FLo: 4°C Hi: 61°FHi: 16°C
 Lo: 42°FLo: 6°C Hi: 71°FHi: 22°C
 Lo: 48°FLo: 9°C Hi: 65°FHi: 18°C
 Lo: 45°FLo: 7°C Hi: 63°FHi: 17°C
 Hi: 68°FHi: 20°C
Lo: 44°FLo: 7°C		 Hi: 68°FHi: 20°C
Lo: 44°FLo: 7°C		 Hi: 68°FHi: 20°C
Lo: 44°FLo: 7°C		 Lo: 46°FLo: 8°C
POP: 70% POP: 90% POP: 70% POP: 50%
POP = Probability of Precipitation.
Weather Outlook Updated: 336 PM MDT Tue Sep 15 2026 Boulder, MT Weather - WeatherWorld.com

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Boulder Forecast Discussion

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Issued: 734 PM MDT Tue Sep 15 2026

Key Messages

  • Areas of rain near the Canadian border late today into tonight.
  • Dry conditions Wednesday ahead of showers/thunderstorms Thursday afternoon through Friday night.
  • Warmer and drier conditions by the end of the weekend.

Discussion

... /Issued 542 PM MDT Tue Sep 15 2026/
  • Meteorological Overview:

    • Due to an upper-level trough clipping north MT, there will be areas of light rain showers this evening through the early hours of Wednesday morning. However, showers are expected to be limited to nor...