Fog Rolling In: San Diego County Weather Update With Cooler Temps And Potential Rain

Kenji Nakamura

4 min read

Post on May 30, 2025

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Current Weather Conditions and Fog Advisory

Currently, a dense fog advisory is in effect for much of San Diego County. Visibility is significantly reduced in many coastal areas, including parts of Carlsbad, Encinitas, and Del Mar. The marine layer is pushing inland, impacting even some inland valleys. Driving conditions are hazardous, and extra caution is advised.

• Fog Density: Visibility is reported to be as low as ¼ mile in some areas, with many reporting near-zero visibility in particularly dense fog pockets.
• Affected Locations: Coastal communities are most affected, including the beaches and areas near the coast. Inland valleys are also experiencing increased fog density.
• Advisory Timing: The fog advisory is currently in effect until 10:00 AM, but conditions may persist longer depending on wind patterns.
• Safety Precautions: Reduce your speed significantly when driving in foggy conditions. Increase your following distance to allow for more braking time. Use your headlights, even during daylight hours, to increase your visibility to other drivers. Avoid unnecessary travel if possible.

Temperature Drop and Impact on San Diego County

Along with the fog, San Diego County is experiencing a noticeable drop in temperature. Expect highs in the mid-60s Fahrenheit (low 20s Celsius) along the coast, significantly cooler than the recent average highs in the low 70s Fahrenheit (mid-20s Celsius). Inland areas will see slightly warmer temperatures, but still noticeably cooler than recent days.

• Predicted Temperatures: Coastal areas: Highs in the mid-60s°F (low 20s°C), lows in the 50s°F (low 10s°C). Inland valleys: Highs in the upper 60s to low 70s°F (high teens to low 20s°C), lows in the 50s°F (mid-teens°C). Mountain areas: Highs in the 50s°F (teens°C), lows in the 40s°F (high single digits°C).
• Temperature Comparison: These temperatures are approximately 10-15°F (5-8°C) below the average for this time of year.
• Activity Impacts: Beachgoers should dress warmly, and hikers should be prepared for cooler, potentially damp conditions. Outdoor events may need to be adjusted accordingly. Farmers should take precautions to protect sensitive crops.
• Industry Impact: The cooler temperatures may impact agriculture, particularly sensitive crops.

Probability of Rain and Potential Impacts

While the fog is a certainty, the chance of rain is less definite, but still present. There's a 30-40% chance of light showers, primarily in the northern coastal areas of San Diego County. The amount of rainfall is expected to be minimal, if any.

• Rain Percentage: 30-40% chance of light rain in North County San Diego, decreasing to near 0% further south.
• Rainfall Timing: Showers are most likely to occur late this afternoon and into the evening.
• Potential Impacts: While significant flooding is unlikely, minor traffic delays are possible due to reduced visibility and slick roads.
• Preparedness Recommendations: Secure any loose outdoor items that could be damaged by rain or wind.

Looking Ahead: San Diego County Weather Forecast

The fog and cooler temperatures are expected to linger into tomorrow, gradually clearing by late afternoon. A gradual warming trend is anticipated for the latter half of the week.

• Next 2-3 Days: Expect continued fog and cooler temperatures through tomorrow, with clearing skies and a slow temperature increase by the weekend.
• Significant Weather Events: No significant weather events are currently anticipated beyond the fog and potential light showers.
• Weather Resources: For the most up-to-date San Diego weather information, consult the National Weather Service website at weather.gov or your preferred weather app.

Conclusion:

San Diego County is experiencing a significant weather change, with dense fog, cooler temperatures, and a chance of light rain impacting many areas. It's crucial to be prepared for reduced visibility on the roads, cooler-than-average temperatures, and the potential for some light showers. Stay informed about the changing San Diego weather conditions by regularly checking the National Weather Service website or reliable weather apps. Prepare for the upcoming San Diego fog and cooler temperatures by dressing warmly, driving cautiously, and securing any outdoor items that could be affected by the weather. Remember to check for updated San Diego weather forecasts before you head out!