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Temperatures set to climb as next heat wave builds in

Posted at 6:20 AM, Jul 19, 2023

Good morning, Central Coast! Happy Wednesday!

We may only be halfway through the week but the little "cool down" we have been enjoying is pretty much over. Extreme heat is the name of the game headed into this forecast.

Hot conditions are on the docket for this week as folks head to Paso Robles for the California Mid-State Fair! Temps while still hot for today are much more comfortable than they will be for the rest of this week.

As far as temps are concerned across the rest of the region today highs are still hot but thankfully no where near what we will see soon. Highs by the beaches will stay in the 60s, upper 70s to low 80s in the coastal valleys and the interiors are making a run at triple digits.

The little "cool down" we have enjoyed for the past couple of days is on its way out as the high pressure controlling the overall pattern strengthens. Strong ridging (high pressure) in the upper atmosphere redevelops Thursday and the high amplitude ridge looks to remain in place much of next week. This will keep the marine influence out of interior valleys, and shift winds slightly so they are able to pull hotter air into the region.

The next heat wave will be driven by this shift and will develop quickly. By the end of the week interior areas of both San Luis Obispo and Santa Barbara County will reach extreme temps between 105 and 110 degrees.

In anticipation of this change an excessive heat watch goes into place Friday morning. It lasts until Saturday at 9:00 PM but considering the forecast additional heat-related advisories are possible if not likely well into next week.

The prolonged heat event again is a risk to public health, and we'll also elevate fire weather concerns throughout the region. Preparedness, diligence, and common sense are all advised during this next heat wave.

Into the weekend temps will continue to climb in the interior valleys while coasts will stay mild.

Coastal valleys will range from the 70s to lower 80s as will the South Coast. Daytime highs at most beaches will remain in the 60s throughout the rest of the week and the coming weekend.

In our 10-day forecast, nine of the next 10 days will see daytime highs warmer than 100 degrees in the interior. The Climate Prediction Center thinks above-average temperatures are likely in their 8 to 14-day outlook.

Have a great day Central Coast and be sure to stay cool!