Weather in Plains, MT
Updated 2026-08-11 11:00 local time · ZIP codes 59859
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
78°0% rain84°0% rain86°0% rain88°0% rain88°0% rain88°0% rain88°0% rain86°0% rain84°0% rain80°0% rain
76°0% rain74°0% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 0%).
It feels like 75°F with winds near 2 mph.
78°F, 0% rain chance and 2 mph wind.
Visibility is around 6 mi; gusts may reach 13 mph.
Current temperature is 78°F, wind 2 mph, rain chance up to 0%.
UV index is 3.
Plains weather today
Sunny and 78°F in Plains, MT. Today's high is 88°F with a 0% rain chance. Winds are around 2 mph with gusts near 7 mph. Relative humidity is 26%, pressure is 29.95 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Plains
Sunrise is at 06:30 AM and sunset is at 08:59 PM. Tomorrow's forecast calls for Sunny with a high near 87°F and a low near 51°F. The maximum rain chance is 57%.