Chances for one-quarter inch of rainfall have increased slightly for the 24 hour period ending 5 AM PDT Wednesday. A low pressure system, currently off the California coast, is anticipated to move into central California early this upcoming week. There is still some uncertainty, but the picture is slowly becoming clearer on the amount of precipitation associated with the system. For now though, there is generally around a 10 to 30 percent chance for one-quarter inch, but with localized areas nearing a 50 percent chance.

Temperatures over the next week are expected near average, with afternoon highs hovering around 90 degrees in the San Joaquin Valley. This image provides the percent chance for select locations of the valley and Sierra foothills to exceed 90 degrees over the upcoming week.

The Weather Prediction Center has put out a Marginal Risk (5-15%) of excessive rainfall for much of central California this coming Tuesday and Wednesday as a system tracks into the area during that time. There is a 30 to 40 percent chance for the San Joaquin Valley to see one-tenth of an inch or greater over 48 hours ending 5 AM Thursday, with greater chances in the higher elevations and in the desert areas.