Weather in Harrison, MT
Updated 2026-09-26 08:00 local time · ZIP codes 59735
Overcast
No government weather alerts were returned for this location at the latest update.
Next hours
44°13% rain49°11% rain
53°6% rain57°10% rain59°10% rain61°9% rain62°9% rain63°7% rain63°5% rain
62°1% rain61°1% rain
55°3% 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 13%).
It feels like 40°F with winds near 6 mph.
61°F, 1% rain chance and 13 mph wind.
Visibility is around 6 mi; gusts may reach 25 mph.
Current temperature is 44°F, wind 6 mph, rain chance up to 13%.
UV index is 0.
Local weather characteristics in Harrison
Montana weather varies from relatively dry plains to snowy mountain climates. Cold fronts, strong winds and large day-to-day temperature swings are common.
Harrison is part of the West weather region. The forecast point is near 45.70°N latitude and 111.79°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.
Harrison weather today
Overcast and 44°F in Harrison, MT. Today's high is 63°F with a 5% rain chance. Winds are around 6 mph with gusts near 7 mph. Relative humidity is 54%, pressure is 29.95 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Harrison
Sunrise is at 07:19 AM and sunset is at 07:17 PM. Tomorrow's forecast calls for Overcast with a high near 62°F and a low near 44°F. The maximum rain chance is 10%.