National Weather service officials have announced a frost advisory for the Inland Empire tomorrow.
Skies will become mostly clear tonight and will combine with the cold air mass to bring frost to the inland valleys.
Temps are expected to fall into the upper 20’s in the coldest wind-sheltered areas.
Many other areas will have lows in the lower 30’s, NWS forecasters said.
Frigid temps are expected to rise above freezing by 8 a.m. Friday.
Temperatures are suppose to warm up Friday night.