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July 6, 2020 – Dry weather with seasonable temperatures for the week.

Discussion

A little cooler weather is expected today with a deepening upper level trough and onshore flow. Temperatures at 3 am were generally 2 to 5 degrees lower than this time yesterday, and this trend will continue for afternoon highs. Daytime temperatures will hover right around normal through midweek. Valley highs are forecast in the 90s with upper 60s to 80s in the mountains.

Westerly winds are expected to increase this afternoon and tonight, especially through the Delta and over the Sierra crest, with gusts up to 30 to 40 mph. Onshore flow will bring quite a bit of cooling overnight, with lows in upper 50s for the Delta, southern/central Sacramento Valley and northern San Joaquin Valley.

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Tuesday highs will be slightly below normal, with Valley highs generally in the lower 90s. Temperatures begin warming a little Wednesday as the trough exits to the east and the pattern flattens out.

Extended Discussion (Friday through Monday)

Ensembles continue to indicate a weak trough along the West Coast while strong ridging extends from SoCal into the central CONUS late this week into early next week. This pattern would favor dry and warm weather with at least light onshore flow into the Central Valley resulting in max temperatures a little over the century mark across warmest portions of the valley, around 5 degrees above average.