Next big weather maker arrives Monday
This evening and tonight, a few showers will scatter the radar, but most of us will stay dry under partly cloudy skies. Low temps will fall into the mid 30s from Missoula to Kalispell. Butte and Bozeman will see temps in the low 30s.
More moisture will begin to enter western Montana from the southwest Sunday morning. Most valleys will see rain, However, mountain passes, including Lost Trail and Homestake Pass may see 1 to 2 inches of snow. Areas in southwest Montana, such as Butte and Dillon may see snow mix in with rain with little to no accumulation.
Sunday afternoon, temperatures will warm into the low to mid 50s. This will allow for enough instability that a few weak thunderstorms will be possible. If caught under a storm, possible impacts include a quick heavy downpour, gusty winds, and occasional lightning. However, coverage of these storms will be very spotty.
Our next big weather maker will arrive Monday in the form of a low pressure system. Rain and snow showers are likely Monday as snow levels will be at 6000 feet. A cold front will move through Monday evening, dropping snow levels to 3000 feet, allowing for light snow accumulations down to the valley floors Tuesday morning.
High temperatures Tuesday will be around 15 degrees below average, in the low to mid 40s.
High pressure will bring drier conditions for the second half of the week, with only slight chances of rain and snow.