Rain and snow likely to start the work week
This evening and tonight, scattered showers and thunderstorms will persist across western Montana. The best chance of thunderstorms with heavy rain will occur after 9pm tonight.
Overnight, showers will persist, especially west of the continental divide as low temperatures only fall into the mid to upper 30s. Mountain passes will see a rain/snow mix at times, but significant accumulations are not expected.
Showery weather will continue into Monday as high temperatures reach the upper 40s. A cold front will make its way through Monday afternoon, allowing snow levels to drop to mountain pass levels. Winds will also be gusty as the front moves through.
Monday night and Tuesday morning, light accumulating snowfall will be possible. Valley locations will generally see less than 2 inches, with areas in southwest Montana having the best chance of some accumulation. Mountain passes will see 2 to 5 inches of snow.
High temperatures Tuesday will be around 15 degrees below average, in the low to mid 40s.
Precipitation chances will be much lower mid to late week. We will also see temperatures increase to near or slightly above seasonal averages. High temperatures in the 50s and even lower 60s will be possible Thursday and Friday.