The National Weather Service is advising people to take care tonight on the roads.
There's a slight chance of freezing drizzle through the rest of the evening.
"It's a low-end chance, but all it takes is a little bit to get some slick spots," said Dave Eastlack, meteorologist with the National Weather Service.
Eastlack said moisture has begun saturating the otherwise dry air in the lower levels of the atmosphere. If that low-level air gets saturated enough, drizzle will result. Because the ground is at or below freezing, that drizzle would likely freeze on contact, creating patchy slick spots, he said. Untreated roadways, highway ramps and bridges are most at risk of icing over.