The National Weather Service issued a frost advisory for the Bay Area Sunday.
The advisory is in effect through 9 a.m. Monday.
The weather service said temperatures will dip into the 30s as a cold air mass settles in with additional cooling overnight.
Interior valleys could get as low as 29 to 33 degrees Fahrenheit, which will result in frost formation.
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Clear skies, dry air allowing the same weather system that dropped snow across the Sierra is setting up our patchy frost chances into Monday morning. Rob Mayeda has more.
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