Weather in Roundup, MT
Updated 2026-09-26 10:00 local time · ZIP codes 59072
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
62°1% rain64°1% rain66°1% rain
67°6% rain
68°4% rain69°2% rain70°3% rain
70°9% rain69°9% rain63°10% rain
62°10% rain61°10% 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 10%).
It feels like 56°F with winds near 4 mph.
70°F, 3% rain chance and 4 mph wind.
Visibility is around 6 mi; gusts may reach 15 mph.
Current temperature is 62°F, wind 4 mph, rain chance up to 10%.
UV index is 2.
Local weather characteristics in Roundup
Montana weather varies from relatively dry plains to snowy mountain climates. Cold fronts, strong winds and large day-to-day temperature swings are common.
Roundup is part of the West weather region. The forecast point is near 46.45°N latitude and 108.54°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.
Roundup weather today
Sunny and 62°F in Roundup, MT. Today's high is 70°F with a 4% rain chance. Winds are around 4 mph with gusts near 6 mph. Relative humidity is 34%, pressure is 29.87 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Roundup
Sunrise is at 07:06 AM and sunset is at 07:04 PM. Tomorrow's forecast calls for Overcast with a high near 64°F and a low near 48°F. The maximum rain chance is 17%.