Bring out the extra blankets and cover the crops - it's supposed to freeze tonight in parts of San Luis Obispo County.
Meteorologists expect the mercury to drop below 28 degrees for several hours Tuesday night into early Wednesday morning in the inland valleys. Cold temperatures are expected again Wednesday and Thursday nights.
Paso Robles could reach a low of 22 degrees, according to John Lindsey, meteorologist at Diablo Canyon nuclear power plant. San Luis Obispo could get down to 32 degrees.
The National Weather Service has posted a freeze watch, and warned that such temperatures could kill crops and other sensitive vegetation if they are not protected.
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The coldest temperatures are expected in the lowest elevations and in wind-sheltered valleys, according to the National Weather Service.
The cold and dry air mass will follow a wet low-pressure system that arrived Monday night. Rain showers are expected to end by early Tuesday afternoon.
Snow is expected in the Sierra foothills above 2,000 feet, Lindsey said. Up to 6 inches is possible at 2,500 feet by mid-morning Tuesday.
Dry, clear and warmer weather with plenty of sunshine is expected Thanksgiving Day, except in the North County, where temperatures will remain cold, Lindsey said.
Dry, warmer and windy weather is forecast through the weekend.