San Diego County is likely to experience more rainfall this week as a weak weather system moves southward from the Pacific Northwest through California. According to the National Weather Service (NWS), this system will affect the region starting Tuesday and continuing into Wednesday.
Overnight into Monday morning, low clouds and fog will cover San Diego County due to a deepening marine layer. Forecasters predict that weak to moderate Santa Ana winds will develop on Monday and last through Tuesday, bringing warmer and drier conditions to the area.
Temperature forecasts for Monday indicate highs ranging from 65 to 69 degrees near the coast, 69 to 72 inland, and 70 to 73 in the western valleys. Mountain areas will see cooler highs between 53 and 63, while the deserts are expected to reach between 69 and 73 degrees.
A small chance of light rain is expected on Wednesday afternoon, with a 10% to 20% probability of precipitation across the county. This is part of the weak weather system passing through. Following the rain, another round of Santa Ana winds is forecast for Thursday and Friday, which could lead to drier and warmer weather conditions.
Temperatures are expected to steadily rise over the weekend, returning to near-seasonal averages. The NWS advises residents to monitor updates, as Santa Ana winds can elevate fire risks and impact air quality.
Key weather highlights for San Diego County this week:
- Weak weather system bringing potential rain Tuesday–Wednesday
- Low clouds and fog overnight into Monday morning
- Santa Ana winds Monday–Tuesday and again Thursday–Friday
- Cooling in the mountains; warmer inland and coastal temperatures
- Gradual warming towards typical seasonal levels by weekend
Residents and visitors should prepare for variable weather conditions that include chances of rain and windy episodes. Staying informed through official weather channels will ensure safety and readiness during this fluctuating weather period.
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