CHICAGO (CBS) — Those Christmas presents you’re waiting on could be delayed by this week’s wintry weather.

The mailman’s path to your door in Chicago is clear, but if your gifts are traveling through parts of the East Coast or Midwest that were hit by snow, they could have trouble getting here.

Mark Reynolds is the spokesman for the US Postal Service’s Chicago district, which includes Wisconsin, says they’re ramping up work in the Badger State in light of weather challenges.

“There has been some very severe weather impacts, to the point where there may actually even be deliveries on Sunday,” said Reynolds.

Reynolds suggests checking tracking numbers for your package’s progress.

Christmas Eve is a regular delivery day and Express Mail deliveries are made every day, even on Christmas.