June 12, 2018 – Dry and warm weather this week. A slight chance for mountain showers near Lassen Park Saturday.
Discussion
Clear skies early this morning with broad upper ridge moving overhead. Current temperatures are running around 5-12 degrees milder compared to 24 hours ago across much of the area and range from the mid 40s in the mountain valleys to the 60s to mid 70sacross the Central Valley.
The current warm-up peaks today and Wednesday when much of the Central Valley will see highs around the century mark. A gradual cooldown is forecast after mid-week as the next upstream trough approaches bringing a return of onshore flow along with synoptic cooling.
Extended discussion (Saturday through Tuesday)
Upper troughing remains over Interior NorCal Saturday through Tuesday as associated upper low moves through PacNW into the Great Basin. Dry weather expected through the extended forecast period except for a slight chance of showers over the Eastern Shasta and Plumas county mountains Saturday afternoon into evening. High temperatures will be near to above normal through the weekend into early next week.