A Northwesterly flow off of the Pacific Ocean will continue moving little shortwave systems into Eastern Idaho and Western Wyoming, keeping snow in the forecast through the Christmas.
Tonight, lingering snow showers will begin to taper off as the first round of moisture exits the region. Overcast skies will continue with temperatures staying steady, near 30 degrees.
Saturday will be the beginning of the next snow system to roll across East Idaho and Western Wyoming. The morning and afternoon will be fairly quiet with snow starting to move into the Central Mountains. Highs will be into the 30's.
Saturday night, heavy snow begins across the mountains with snow showers throughout the Snake River Plain. Travel will become very hazardous over the mountain passes. Temperatures near 32 degrees.
Sunday, Windy with more scattered rain and snow showers. Highs for the Snake River Plain into the lower 40's. Southwest wind 15 to 25 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Monday, mostly cloudy with more rain and snow showers. Chance of precipitation is around 40%. Highs near 40° for the Snake River Plain.