Boise picked up another half inch of snow over the weekend, and Bogus Basin added another 2 inches to its base. But there's no snow, sleet or rain in the forecast for this week, according to the National Weather Service.

Commuters in the western Treasure Valley (including Ontario and Weiser) woke up to some foggy conditions Monday morning but people going to work in the Boise, Meridian, and Nampa areas were spared. An inversion is trapping cold air in the Valley — a phenomenon expected to last all week long —  so be sure to bundle up before heading out the door.

Temperatures got as low as 13 degrees in Boise overnight but it warmed up as the morning went on when the clouds formed by evaporating snow kept some heat in. The temperature at 8 a.m. in Boise was 21 degrees, according to National Weather Service reports.

It may get even colder the next couple of nights — as low as 3 on Tuesday and 6 on Wednesday. The key will be if those clouds develop overnight. If they do, the temperatures are expected to be in the teens. If they don't, overnight temperatures could dip close to 0, meteorologist Les Collin said Monday morning. Highs in the Boise area are expected to be in the mid 20s all week long