May 1, 2019 – Temperatures trend warmer through the remainder of the week with a chance for showers returning to the higher terrain this weekend and into early next week.
Discussion
Clear skies cover interior NorCal early this morning. Current temperatures range from the mid 20s to lower 30s in the mountain valleys to the 40s to mid 50s elsewhere.
The transition to warmer, drier weather begins today and continues into the weekend as weakening cyclonic flow gradually gives way to a building ridge ahead of the next upstream closed low over the eastern Pacific. Highs across the Central Valley will warm into the lower to mid 80s Thursday thru Saturday.
Extended Discussion (Sunday through Wednesday)
Unsettled pattern across interior early next week as closed upper low approaches CA, and gradually moves inland. Models have been consistent with this feature, but do vary with timing and placement. While mainly focused in the foothills and mountains, some of these showers could spread over the Central Valley late Sunday into Monday. Guidance suggests there could be some thunderstorm development over higher terrain in the afternoon and early evening each day. By Wednesday, shower activity is expected mainly south of HWY 50. Temperatures will gradually warm up through the period.