Weather in Boulder, MT
Updated 2026-09-26 07:45 local time · ZIP codes 59632
Clear
No government weather alerts were returned for this location at the latest update.
Next hours
38°6% rain
44°14% rain48°11% rain52°10% rain53°10% rain54°10% rain55°9% rain57°9% rain57°1% rain57°1% rain56°1% rain50°1% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 17%).
It feels like 36°F with winds near 3 mph.
57°F, 1% rain chance and 12 mph wind.
Visibility is around 6 mi; gusts may reach 21 mph.
Current temperature is 38°F, wind 3 mph, rain chance up to 17%.
UV index is 0.
Local weather characteristics in Boulder
Montana weather varies from relatively dry plains to snowy mountain climates. Cold fronts, strong winds and large day-to-day temperature swings are common.
Boulder is part of the West weather region. The forecast point is near 46.24°N latitude and 112.12°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Boulder weather today
Clear and 38°F in Boulder, MT. Today's high is 57°F with a 4% rain chance. Winds are around 3 mph with gusts near 4 mph. Relative humidity is 68%, pressure is 30.00 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Boulder
Sunrise is at 07:20 AM and sunset is at 07:18 PM. Tomorrow's forecast calls for Overcast with a high near 59°F and a low near 39°F. The maximum rain chance is 10%.