Boise, ID – Clear skies and chilly temperatures dominate the forecast today, but significant mountain snowfall is expected later this week. A winter system arriving Friday could bring up to a foot of snow to Idaho’s higher elevations, with 80% confidence for areas like Highway 21 near Banner Summit.
According to the National Weather Service, snow levels will primarily affect areas above 6,500 feet, with McCall seeing lower chances. Travelers should prepare for hazardous conditions beginning Friday and plan accordingly, especially along mountain roadways.
For now, Boise remains under an air stagnation advisory through Friday morning due to an inversion trapping pollutants. Residents with respiratory conditions should limit outdoor activities.
This week’s forecast for Boise includes sunny skies through Thursday, with highs in the low 40s and lows near 20 degrees. By Friday, rain and snow are likely, with precipitation increasing into Saturday.
Stay updated on conditions, particularly if you plan to travel to higher elevations or mountain passes. Prepare for sudden changes in weather and allow extra travel time.
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