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San Diego's Weather Forecast for May 17, 2023: Warm & muggy with possible mountain storms

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Humidity has been on the rise this week, and we'll stay muggy through the weekend.

May Gray will continue for the coast, while monsoon moisture will keep flowing into the county making temperatures feel warmer, and creating instability with possible showers and thunderstorms mainly in the mountains.

We are locked in a weather pattern with a ridge of high pressure sitting over the center of the country pulling in moisture from the Gulf of Mexico right into the 4-Corners region, the flow will veer closer to us through the weekend keeping the chance for a slight chance of showers and thunderstorms, mainly near the mountains. This pattern is also known as monsoon flow.

The marine layer and the monsoon flow may produce mist to patchy drizzle at times, especially in the early morning hours. Any thunderstorm that develops could produce gusty winds and lightning. While not likely, it's not impossible to see a storm spill over into the valleys. The best chance will be Thursday and Friday.

Temperatures will be mild away from the coast, trending from a few degrees to almost 10 degrees from the valleys to the deserts. The marine layer will keep temperatures near normal for our coastal communities.

The monsoon flow ends early next week as drier air filters in thanks to a storm moving into the Pacific Northwest.

Thursday's Highs: 
Coast: 64-69°
Inland: 75-81°
Mountains: 74-88°
Deserts: 100-105°

Follow ABC 10News Meteorologist Angelica Campos on Facebook & Instagram @Camposcrusher Twitter @10NewsCampos