Jan 21, 2013 7:16 AM by Courtney Olish - StormTracker Weather Center
MISSOULA - High pressure continues to strengthen over Western Montana for the beginning of the work week.
Valley inversions will keep temperatures cooler on Monday, and morning fog will continue to be a concern.
But temperatures this week are looking slightly warmer. The valley locations will see highs near or above freezing with overnight lows in the teens and single digits, while the higher terrain will see plenty of sunshine and warmer temperatures.
The coldest day of the week is expected to be Tuesday where dense fog Tuesday morning could cause concern for morning commuters.
A Pacific frontal system will bring some changes to the region by Wednesday, meaning that inversions are expected to weaken and air quality will improve.
Daytime temperatures will also increase slightly with a good chance of precipitation starting Wednesday.