The National Weather Service issued a winter weather advisory to begin at 10 p.m. Saturday through 10 a.m. Sunday in the northern two-thirds of St. Louis County as well as Lake and Cook counties due to a mix of freezing drizzle and snow.
The snow likely won't change to a wintry mix of freezing drizzle until after midnight in most places or after sunrise in northwest Wisconsin, NWS meteorologist Kevin Huyke said, making driving conditions the worst in the morning.
"The precipitation should start out as snow (Saturday) evening or early Sunday morning, but then may change over to either a mix of snow and freezing drizzle or may change to straight freezing drizzle," Huyke said Saturday evening.
Motorists should plan for slippery road conditions and expect elevated surfaces such as bridges to become icy before other surfaces.
Duluth is not within the boundaries of the winter weather advisory, but can expect a dusting of up to an inch of snow.
If the snow does not change to freezing drizzle or wintry mix, then more snow can be expected.
The NWS reminds motorists to slow down and use caution when traveling. Road conditions can be checked by calling 511 or at 511mn.org.