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October 10, 2018 – A weak weather system will bring a few light showers to the Sierra today and Thursday. Temperatures remain near average during the week.
Clear skies across most of interior NorCal early this morning. Current temperatures vary from the 30s in the mountain valleys to the upper 40s and 50s through much of the Central Valley. Steady northerly winds are keeping the northern Sacramento Valley in the mid 60s currently. Temperatures will be a little cooler today and Thursday as a weather system drops down from the north. A few showers will be possible across the northern Sierra Nevada, but the lack of available moisture will limit QPF. Pattern will attempt to redevelop the Rex Block by the weekend with a closed low off the SoCal coast beneath strong ridging off the coast of the PacNW. The result will be a return to dry and milder weather along with locally breezy north winds heading into the weekend.
Extended Discussion (Sunday through Wednesday)
Upper ridge over the eastern Pacific and west coast will keep the forecast area under fair skies and dry conditions through the extended period. Overall, daytime highs should remain near to a little above normal. Upper level and surface pressure gradients should produce light northerly breezes through the extended period but nothing that looks particularly strong at this time. These north winds will, however, keep daytime humidity values on the low side for this time of year so fire risk will remain moderate most areas during the extended forecast period.