The National Weather Service says Tuesday through Thursday, about a half-an-inch of rain is expected in the valley with an inch or so of rain in the foothills.
Mike Smith with the Weather Service in Sacramento says there's also a chance of thunderstorms and even a tornado.
"This is probably a pretty normal winter storm for a normal season, so it's not going to help a whole lot; it's just one system," says Smith. "The good news is, we do have more on the way. We're expecting more rain coming up this weekend and then possibly some more even going into next week."
He says the region is still a long way from normal when it comes to precipitation - but there's positive news in the forecast.
Smith says the storm is also likely to bring a foot or two of snow to the Sierra. He says gusty winds are possible, and there's a winter storm warning in effect from 3 p.m. today through Thursday morning.
6/28/16 UPDATE - Forecasters are predicting record heat in the Sacramento region Tuesday with temperatures reaching 108 degrees downtown.
After several days of sweltering heat, Sacramento residents can expect cooler weather this week. Temperatures will remain in the mid-90s for Monday.
Heavy thunderstorms are moving through Plumas County Sunday evening.
Friday is expected to be the hottest day of the week with triple-digit temperatures hitting much of the Central Valley, according to the National Weather Service.
CHP is requiring chains on I-80 between Donner Lake Rd. to Nyack and Eastbound 1-80 at Drum Forebay is closed due to heavy snow and multiple accidents. Downtown Sacramento's Concert in the Park was cancelled due to the weather.