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San Diego's Weather Forecast for March 18, 2025: Warm end to winter!

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Tomorrow is the last day of winter but it certainly won't be feeling that way for the coast and valleys. It will be 5 to 10 degrees warmer tomorrow, with highs topping out 3 to 8 degrees above average.

On Wednesday, temperatures will go from below average to above average for the coast and valleys, reaching the low-70s along the coast and mid-70s inland. Near to slightly below average still in the mountains and deserts, in the mid-50s in the mountains and mid-70s in the deserts with warmer weather on tap the rest of the week there.

The storm track will be trending farther north this week, but as each storm passes, it will bring small changes here. The first passing storm will bring a slight dip in temperatures on Thursday and then again on Saturday.

High pressure will build stronger Sunday into early next week, which will push storms even farther north and bring a major warm-up to the county.

By Monday, we'll see mid-70s at the coast, low to potentially mid-80s inland, low-70s in the mountains, and around 90 in the deserts!

Wednesday's Highs: 
Coast: 65-73°
Inland: 71-78°
Mountains: 55-67°
Deserts: 75-78°

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