Temperatures will range from 26 to 32 degrees for most of the Bay Area.
There are potential health impacts for those who are outside during overnight hours. Temperature-sensitive plants could be severely impacted as well.
A Freeze Warning means sub-freezing temperatures are imminent or highly likely. Such conditions will kill crops and other sensitive vegetation.
VIDEO: Watch AccuWeather Forecast
A Frost Advisory is up for the rest of the Bay Area, except for San Francisco.
Meteorologist Sandhya Patel has the latest weather updates on her Twitter and Facebook pages.
You can track the coming weather where you live with the ABC7 Weather app for your smartphone. If you're traveling, you can also get weather conditions and warnings wherever you are. It is free on Apple's App Store or on Google Play.
Bring in your sensitive plants & pets. Freeze Warning going up tonight. Temperatures will tumble again! pic.twitter.com/bJI31MUZWo— Sandhya Patel (@SandhyaABC7) November 26, 2015
Frost Advisory for SF Bay Shoreline not including SF starting late tonight - FRI AM. Frost may damage your plants. pic.twitter.com/FYqH0GVQ69— Sandhya Patel (@SandhyaABC7) November 26, 2015