Cool breezes off the Carquinez Strait keep the weather near perfect with an average temperature of 69 degrees. Our moderate Mediterranean weather produces dry, warm summers and mild falls and winters. The warmest month of the year is July, with an average maximum temperature of 87.40 degrees Fahrenheit, while the coldest month of the year is December, with an average high temperature of around 55 degrees Fahrenheit. The annual average precipitation at Benicia is 19.58 inches. The wettest month of the year is January, with an average rainfall of 4.25 inches.
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