After a quiet weekend, the next upper level low pressure moves in from Alaska. With the close proximity of the low just hanging off the coast, rain and snow chance will be increasing for Southern Oregon and Northern California!
Heavy rain will be possible for Northern California especially Monday and Tuesday where a few inches will possible. As colder air drops for the Sierra, some snow chances will be possible too. Again this is good news as drought has returned to the state following the historic heatwave in March. As the low moves eastward midweek, more moisture should increase across the Rocky Mountain states. 
In the next week and half, the pattern should stay stormy which means more potential for snow and rain chances for California and the rest of the West. Temperatures will be slightly cooler than normal!
