Weather in Westby, MT
Updated 2026-09-26 10:45 local time · ZIP codes 59275
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
59°1% rain62°0% rain63°0% rain64°0% rain64°0% rain
64°6% rain
62°9% rain60°9% rain
60°9% rain61°9% rain59°9% rain59°9% 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 9%).
It feels like 46°F with winds near 16 mph.
64°F, 0% rain chance and 16 mph wind.
Visibility is around 6 mi; gusts may reach 25 mph.
Current temperature is 59°F, wind 16 mph, rain chance up to 9%.
UV index is 2.
Local weather characteristics in Westby
Montana weather varies from relatively dry plains to snowy mountain climates. Cold fronts, strong winds and large day-to-day temperature swings are common.
Westby is part of the West weather region. The forecast point is near 48.87°N latitude and 104.05°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.
Westby weather today
Sunny and 59°F in Westby, MT. Today's high is 64°F with a 36% rain chance. Winds are around 16 mph with gusts near 19 mph. Relative humidity is 34%, pressure is 29.77 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Westby
Sunrise is at 07:48 AM and sunset is at 07:46 PM. Tomorrow's forecast calls for Overcast with a high near 63°F and a low near 44°F. The maximum rain chance is 7%.