Baltimore City and Harford County schools are closed Friday due to the extreme cold temperatures, and several other local jurisdictions are delayed.
Temperatures were near — or in some cases below — zero early Friday, with wind chills forecast to dip into the negatives.
Baltimore City officials posted on the school system website that the closure is "Due to extreme cold and resulting heating issues in many buildings."
Schools in Anne Arundel, Baltimore, Carroll and Howard, Frederick, Montgomery and Prince George's counties were operating on a two-hour delayed opening.
Other school systems that decided to close Friday included Allegany County and Cecil County.
For a full, updated list of delays and closings, bookmark our school closings database.