Temps will be 10-15 degrees below normal for the month.
Tuesday travelers should check their flight status before going to the airport.
"When Mother Nature throws a curve ball, we must keep staff and student safety as our top priority."
"We're going to be feeling it big time."
Officials say "brief intense snow showers" will be present in the area.
Many were caught by surprise when snow fell Up North overnight Friday just a few days after temperatures were in the 80s with enough humidity to make it feel like August.
Organizers announced previously scheduled late night "Jam Sessions" would still take place.