The Marin County Fair officially began amid yesterday's sweltering heat in San Rafael.

KCBS Radio's Jeffrey Schaub reports, the heat caused lots of visitors to head home early.

Jessica Ruscello / Getty Images

The Marin County Fair officially began amid yesterday's sweltering heat in San Rafael.
KCBS Radio's Jeffrey Schaub reports, the heat caused lots of visitors to head home early.
Jessica Ruscello / Getty Images

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