Weather in Simms, MT
Updated 2026-09-26 07:45 local time · ZIP codes 59477
Partly Cloudy
No government weather alerts were returned for this location at the latest update.
Next hours
48°4% rain
51°10% rain53°10% rain56°9% rain58°9% rain60°9% rain62°9% rain61°9% rain61°9% rain61°2% rain
60°0% rain56°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 10%).
It feels like 41°F with winds near 22 mph.
56°F, 0% rain chance and 14 mph wind.
Visibility is around 6 mi; gusts may reach 33 mph.
Current temperature is 48°F, wind 22 mph, rain chance up to 10%.
UV index is 0.
Local weather characteristics in Simms
Montana weather varies from relatively dry plains to snowy mountain climates. Cold fronts, strong winds and large day-to-day temperature swings are common.
Simms is part of the West weather region. The forecast point is near 47.49°N latitude and 111.93°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.
Simms weather today
Partly Cloudy and 48°F in Simms, MT. Today's high is 62°F with a 4% rain chance. Winds are around 22 mph with gusts near 32 mph. Relative humidity is 51%, pressure is 29.91 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Simms
Sunrise is at 07:20 AM and sunset is at 07:18 PM. Tomorrow's forecast calls for Overcast with a high near 60°F and a low near 43°F. The maximum rain chance is 10%.