However, Thursday is projected to be the last really chilly day for many of these areas.
Warm air returns by the weekend, as temperatures are forecast to rise 5-15 degrees above November averages.
In the southeastern U.S., a passing frontal boundary will bring showers on Thursday.
The system will then shift south into Florida, bringing heavy rain on Friday.
Areas along the coast will receive 3-5 inches by the weekend.
Significant flash flooding will also be possible.
High wind warnings and wind advisories are in effect for portions of California, Oregon and Washington; 60-75 mph wind gusts are likely.