Still very warm on Wednesday but much cooler for the weekend

Posted at 5:54 PM, Sep 24, 2019
and last updated 2019-09-24 20:54:40-04

Offshore flow brought hot temps and gusty winds to some areas, the Central Coast reached triple digits in Santa Maria and high 90s in many other areas. Even Morro Bay Harbor briefly reached the mid 80s before the sea breeze kicked in and dropped temps back down to the 60s.

Expecting some Sundowner winds in southern SB County this evening that should help dissipate the marine layer clouds along the coast and push temps up into the 80s or low 90s there. A tricky temperature forecast with the transition but most coast and valley areas should be slightly cooler while inland areas either see little change or are slightly warmer.

More significant and widespread cooling Thursday as onshore flow increases. One feature to keep an eye on is the the upper low that is currently near the CA/AZ border. I think the monsoon moisture stays too far south and east for us but other parts of Southern California could see showers. Main weather feature will likely be the big cool down from earlier in the week as onshore flow takes over. Highs expected to drop 10-15 degrees inland Thu and 5-10 near the coast.

The low is expected to move east Friday, however a trough will start to drop down into the Pacific NW with rapidly increasing onshore flow. Some deep marine layer at the coast could cause drizzle.

The weekend into early next week looks like a period of well below normal temps and possibly some marine layer drizzle Sat/Sun and limited afternoon clearing. Highs expected to drop into the 60s to lower 70s most areas, even the valleys where normal highs this time of year are in the mid 80s to lower 90s.