Yeah, all of the forecasts call for some decent rain now and it's looking pretty good since it's already so close. Accuweather has shown quite a few storms a week out over the past month that never materialized, so it's not been very accurate. For what' it's worth, they're showing about 2.4" over the next week or so.
Rio Vista, CA 94571 Month Weather Report - AccuWeather.com