UPDATE: Slick roads spark flurry of crashes for Ada morning commute; inversion predicted for the Valley Monday

Nearly an inch of snow stuck to the ground overnight in Boise, according to the National Weather Service.

That made roads slick Thursday morning in the Treasure Valley. The Ada County Sheriff’s Office reported 27 crashes, including six with reported injuries, and two slide-offs.

But as temperatures rose, snow and slick roads abated by late morning, the National Weather Service reports.

Up until Saturday there will be an “unsettled pattern” pushing through the Treasure Valley, meteorologist Valerie Mills said. That means there will be sporadic fog, but not inversion conditions.

By Saturday, a cold front will creep into the valley, Mills said. The low is predicted to be around 27 degrees with a high of 44 degrees, according to the National Weather Service.

Then Monday, an inversion is expected to set in that could last until Valentine’s Day, she said.

Erin Fenner: 208-377-6207, @erinfenner