That's prompted the National Weather Service to issue a "hard freeze watch."
"What that would mean is potentially dangerous conditions for sensitive vegetation throughout the valley and lower foothills, along with some potential for pipes bursting. So it's always wise to prepare for that."
Tom Dang is a meteorologist with the National Weather Service office in Sacramento. He says it's a good idea to cover up any exposed water pipes, protect sensitive plants and make sure your pets spend the night indoors.
Sub-freezing temperatures could cause damage to several valley crops that are already budding and flowering - including apricots, almonds and peaches.
The "hard freeze watch" will remain in effect through Sunday morning.