News Summary
San Diego County is anticipating warmer and drier weather this week, driven by Santa Ana winds and high pressure. Inland valleys may see temperatures rise significantly, with highs reaching up to 15 degrees above average. Coastal and desert areas will also experience increased warmth, with a peak expected on Tuesday. A Heat Advisory will be in effect for valleys during the hottest times. As Halloween approaches, pleasant weather conditions are forecasted, allowing residents to enjoy outdoor activities while remaining cautious about heat-related illnesses.
San Diego County to Experience Warmer and Drier Weather This Week with Santa Ana Winds Forecasted
San Diego County is set to experience significantly warmer and drier weather this week due to high pressure and periods of offshore flow. Santa Ana winds, which are expected to peak on Tuesday, will contribute to these shifting weather conditions. Inland valleys could see temperatures soar up to 15 degrees above average, while coastal and desert areas will also be notably warmer.
Beginning Monday, temperatures along the coast are anticipated to reach seasonal averages, with highs ranging from 69-76°F. Inland areas may experience slightly higher temperatures, with predicted highs between 76-83°F. The transitions in weather will include a morning fog that will impact visibility in coastal communities, but this fog is expected to dissipate by 8:30 a.m.
As the week progresses, forecasters predict that Tuesday will be particularly warm, possibly becoming the hottest day of the week. Coastal highs are expected to rise to around 80°F, while some inland locations may reach the low 90s, with Ramona potentially tying a record at 93°F. The Santa Ana winds will also bring gusts between 35-45 mph in the mountains and coastal foothills from Tuesday afternoon through Wednesday morning. Relative humidity in inland valleys may drop to as low as 12% on Tuesday afternoon.
On Wednesday, temperatures will remain elevated, with coastal areas approximately 5 degrees above average and inland valleys potentially hitting highs in the mid- to upper-80s, with some areas possibly reaching 90°F. San Diego County mountains are expected to see highs in the upper 70s, while desert regions will likely reach the upper 80s. In addition, Specific locations like Vista and Mira Mesa could see highs nearing the upper 80s on Wednesday.
Following the peak of the winds and rising temperatures on Tuesday, wind speeds are forecasted to decrease by Thursday, ultimately leading to a slight drop in temperatures. However, the entire region is expected to stay above average for the remainder of the week.
A Heat Advisory will be in effect for valleys on Tuesday from 11 a.m. to 7 p.m., warning residents to take precautions against the heat, especially during the peak afternoon hours.
As Halloween approaches later this week, the forecast suggests a continuation of pleasant weather conditions, with morning fog giving way to mostly sunny skies. Mild evening temperatures are expected, maintaining a more festive atmosphere for evening activities.
This week’s weather shift marks a significant change for the region, providing an opportunity for residents to enjoy warmer temperatures and outdoor activities. However, it also serves as a reminder of the importance of staying hydrated and taking care to avoid heat-related illnesses during the higher temperature days ahead.
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Additional Resources
- 10 News: San Diego’s Weather Forecast
- Wikipedia: Weather
- Fox 5 San Diego: Heat Advisory
- Google Search: California Weather Forecast
- Times of San Diego: Dry Warmer Weather
- Google Scholar: San Diego Weather October 2025
- Desert Sun: Heat Advisory in Southern California
- Encyclopedia Britannica: California Weather
- Fox 5 San Diego: Bodies Found after Severe Weather
- Google News: San Diego Weather
Author: STAFF HERE CORONADO
The Coronado Staff Writer represents the experienced team at HERECoronado.com, your go-to source for actionable local news and information in Coronado, San Diego County, and beyond. Specializing in "news you can use," we cover essential topics like product reviews for personal and business needs, local business directories, politics, real estate trends, neighborhood insights, and state news affecting the area—with deep expertise drawn from years of dedicated reporting and strong community input, including local press releases and business updates. We deliver top reporting on high-value events such as the Coronado Island Film Festival, productions at Lamb’s Players Theatre, community workshops at John D. Spreckels Center, and iconic celebrations at Hotel del Coronado. Our coverage extends to key organizations like the Coronado Chamber of Commerce and Visit Coronado, plus leading businesses in hospitality, dining, and tourism that drive the local economy. As part of the broader HERE network, including HERESanDiego.com, HEREHuntingtonBeach.com, HERELongBeach.com, and HERELosAngeles.com, we provide comprehensive, credible insights into Southern California's dynamic landscape.
