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Morning fog could produce drizzle throughout the morning commute this week

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Posted at 4:46 AM, Jul 21, 2020
and last updated 2020-07-21 09:05:45-04

Temperatures will be right around average Tuesday. The beaches will have daytime highs from the low to upper 60s, the coastal valleys will have a mix of 60s and 70s, and the inland valley communities will range from the 80s up to the 90s.

Throughout the morning, the deepening marine layer will stretch from the coast to the coastal valleys, with increasing cloud cover over the inland valley communities as well. The foggy skies will mix out across the valleys through the late morning but could take longer along the coast. Even by the afternoon, mid to high-level clouds could redevelop over the valleys ahead of another round of overnight fog.

Areas south of Point Conception won't see as much cloud cover if any. The south coast region will also likely experience some slightly cooler temperatures Tuesday as sundowner winds back off.

The rest of the week will be cooler, as a trough of low pressure develops over the Bay Area Wednesday, which could also result in drizzle throughout the morning commute. Most areas will have the potential to experience five to ten degrees of cooling through the end of the week. By this time, gusty northwesterly winds are expected to develop with wind gusts up to 35 miles per hour. The high winds will begin to decrease Sunday.