Mini Heat Wave Forecast: Southern California Weekend Temperatures

Kenji Nakamura

4 min read

Post on May 13, 2025

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Expected Temperature Increases and Locations

This mini heat wave will bring a significant temperature increase across Southern California. The forecast highs are expected to be substantially above the average for this time of year, posing a risk of heat-related illnesses. The Inland Empire will likely experience the most extreme heat, with Los Angeles County, Orange County, and San Diego County also facing elevated temperatures.

Here's a breakdown of expected high temperatures:

• Areas of most extreme heat: The Inland Empire, particularly desert areas, will see the most significant temperature increases.
• Temperature comparison: These temperatures are 10-20 degrees Fahrenheit above the average for this time of year in many areas.

Timing of the Mini Heat Wave

The mini heat wave is expected to impact Southern California starting Friday evening, with the hottest temperatures anticipated on Saturday and Sunday. Temperatures should begin to moderate on Monday.

• Friday: Temperatures will start to rise in the afternoon and evening.
• Saturday: Expect peak heat, with the highest temperatures of the weekend.
• Sunday: High temperatures will persist, though slightly lower than Saturday.
• Monday: Temperatures will gradually decrease, returning to more seasonal norms.
• Peak heat times: The hottest part of the day will be between 2 PM and 6 PM.

Potential Impacts and Hazards

The significant temperature increase poses several potential hazards, including:

• Heat exhaustion: Symptoms include heavy sweating, weakness, dizziness, headache, nausea, and vomiting.
• Heat stroke: A life-threatening condition with symptoms such as high body temperature (above 103°F), confusion, seizures, and loss of consciousness. Seek immediate medical attention if you suspect heat stroke.
• Increased risk of wildfires: Dry conditions coupled with high temperatures significantly increase the risk of wildfires.

Safety Tips:

• Stay hydrated: Drink plenty of water throughout the day, even if you don't feel thirsty.
• Limit outdoor activities: Avoid strenuous outdoor activities during the hottest part of the day.
• Wear light-colored, loose-fitting clothing: This will help your body stay cool.
• Seek shade: Find shade whenever possible to avoid direct sunlight.
• Check on vulnerable individuals: Check on elderly neighbors, family members, and pets to ensure their safety.
• Know the location of cooling centers: Many cities offer cooling centers as refuge from the heat. Contact your local government for locations.

Preparing for the Mini Heat Wave

Proper preparation is crucial for staying safe during this mini heat wave. Take the following steps to ensure your safety and comfort:

• Stock up on essentials: Make sure you have plenty of water, non-perishable foods, and any necessary medications.
• Prepare your home: Close blinds and curtains during the day to keep your home cooler. Consider using fans or air conditioning.
• Conserve energy: Use energy-efficient appliances and avoid using energy-intensive appliances during peak hours.
• Check on your neighbors: Make sure elderly neighbors or those with health concerns have access to cool environments and resources.

Conclusion

This weekend's mini heat wave in Southern California will bring significantly higher than average temperatures, particularly in the Inland Empire. The peak heat is expected Saturday and Sunday, with temperatures gradually returning to normal by Monday. Heat-related illnesses and wildfire risks are heightened during this period. By following the safety tips and preparedness advice outlined above, you can minimize risks and ensure your well-being during this mini heat wave. Stay informed about the evolving Southern California weather forecast and take necessary precautions. Check back for updates on our website for the latest Southern California temperature forecasts. Prepare for the upcoming mini heat wave and stay safe!