Winter storms and extreme cold are forecast to wallop the U.S. with snow and ice through the weekend. Prepare for power outages and transportation issues.

"A significant Arctic outbreak" is expected this weekend, forecasters say, bringing with it "bitterly cold temperatures." ...

States across the central and eastern U.S. are under extreme heat watches and warnings as the areas face a dangerous heat wave throughout the first half of the week, according to the National Weather ...

We've got yet another very cold and snowy weekend on tap in Boston. Here's what the weather forecast maps show.