National Weather Service United States Department of Commerce

Southerly flow will result in a warming trend through the first half of the week with the potential for tonight, especially north of I-80. The warmer temperatures will result in improving road conditions but less traveled roads will still have slush on them.
Warm air moving over the snow covered ground will result in fog developing late tonight into Tuesday morning. With temperatures below freezing, the developing freezy fog may result in slick roads.