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April 8, 2021 – Dry and mild weather expected to continue. High temperatures will trend warmer into the weekend. Dry and potentially breezy early next week with above average temperatures.

Discussion

Temperatures are a little cooler this morning, with cool onshore flow and a shortwave trough to the north flattening the upper level ridge which has been over the area. The Delta breeze continues but not quite as strong as yesterday. At 2 am winds were around 21 mph sustained at Fairfield and around 5-10 mph inland over Delta breeze influenced areas. Some marine stratus could again make it into the Delta this morning.

High temperatures for the Valley are forecast to be in low to mid 70s. Foothill temperatures should peak in the 60s with the higher elevation mountain locations being in the upper 40s.

Ensemble guidance continues high confidence in upper level ridge building in late this week, leading to warming high temperatures and dry conditions. High temperatures this weekend are forecast to be 5 to 15 degrees above climatology with Valley locations expected to reach into the 80s. Winds will become more northerly over the weekend, with some potential for breezy winds on Sunday.

Extended discussion (Monday through Thursday)

Dry and mild weather pattern likely to continue next week. While some of the model solutions continue to indicate a deeper trough to our east over the Great Basin and Rockies, analysis of the clusters indicates a majority are still pointing toward stronger ridging over the eastern Pacific extending over NorCal with a weaker trough further to the east. Highs will be in the lower to mid 80s across the Central Valley, around 10-15 degrees above average. Locally breezy north to east winds will be possible at times.