Weather in Hamilton, MT
Updated 2026-09-26 07:00 local time · ZIP codes 59840
Cloudy
No government weather alerts were returned for this location at the latest update.
Next hours
38°22% rain
39°24% rain43°17% rain47°13% rain50°10% rain53°10% rain55°8% rain57°9% rain
58°0% rain59°0% rain59°0% rain58°0% 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 24%).
It feels like 34°F with winds near 5 mph.
59°F, 0% rain chance and 7 mph wind.
Visibility is around 6 mi; gusts may reach 13 mph.
Current temperature is 38°F, wind 5 mph, rain chance up to 24%.
UV index is 0.
Local weather characteristics in Hamilton
Montana weather varies from relatively dry plains to snowy mountain climates. Cold fronts, strong winds and large day-to-day temperature swings are common.
Hamilton is part of the West weather region. The forecast point is near 46.25°N latitude and 114.16°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.
Hamilton weather today
Cloudy and 38°F in Hamilton, MT. Today's high is 59°F with a 6% rain chance. Winds are around 5 mph with gusts near 6 mph. Relative humidity is 83%, pressure is 30.08 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Hamilton
Sunrise is at 07:28 AM and sunset is at 07:27 PM. Tomorrow's forecast calls for Overcast with a high near 58°F and a low near 39°F. The maximum rain chance is 57%.