Wet weather is expected over the post-Thanksgiving weekend, with heavy rain and gusty winds predicted.

The first rainstorm will begin over the North Bay on Friday evening, spreading south on Saturday. A quarter to a half inch of rain is expected. Roads may become slick, slowing down weekend holiday traffic.

A separate storm will bring lingering showers late Saturday and Sunday, and may cause snow to fall above 4,000 feet. Thunderstorms may occur south of San Francisco near the coastal waters of Monterey Bay.

Winds will be strong on Friday and will peak Saturday morning, averaging speeds up to 15 to 30 mph with occasional gusts to 45 mph.

SEE RELATED: Beach hazard warning issued for SF coast