INFO PAGE
Cold weather
When it is very cold, and you have to be outside, be sure to bundle up and dress appropriately for the weather.
Remember to bring pets inside and out of the elements. If you see someone in need of shelter, please call 3-1-1. If someone is having a medical emergency call 9-1-1.
Before cold weather
- Check weather forecasts at weather.gov/mtr
- Prepare for power outages by making an emergency plan and gathering blankets, warm clothing, flashlights, and non-perishable food.
- Ensure smoke detectors and carbon monoxide detectors are working. Install carbon monoxide alarms in central locations and outside sleeping areas.
During cold weather
- Wear layers, a hat, gloves, and a scarf to protect your face and neck.
- Stay indoors if possible. Keep windows and doors closed and use blankets or drapes to insulate windows.
- Use heating sources safely.
- Never use candle, generators, grills, or gas stoves for heating indoors.
- Keep space heaters at least 3 feet from anything flammable and never leave them unattended.
- If using a fireplace, make sure embers are completely out before leaving or sleeping.
- Prevent heat loss around your home when you can. Close off unused rooms, place towels under doors, and minimize door openings.
- Check on older adults and those with disabilities to ensure they are safe and warm.
Recognizing Cold-Related Illnesses
- Hypothermia occurs when body temperature drops too low. Symptoms include shivering, confusion, slurred speech, and drowsiness. If you suspect hypothermia, seek medical attention immediately and warm the person gradually, focusing on the core of the body.
- Frostbite can occur in freezing temperatures, affecting exposed skin. Symptoms include numbness, discoloration, and a waxy texture. Move to a warm area and seek medical help.
- Dehydration can occur in cold weather as the body's thirst response decreases. Drink plenty of fluids, even if you don’t feel thirsty.
Community Resources
- Emergency Shelters: If you see someone in need of shelter, call 3-1-1. San Francisco provides additional assistance to unhoused individuals during cold weather.
- Public Warming Centers: Libraries, recreation centers, and other public buildings may serve as publicly-accessible warm spaces during extreme cold.
Sign up for AlertSF to receive important updates before, during and after emergencies.
Text your ZIP Code to 888-777 or sign up at AlertSF.org.
Learn more
- Find out about how disasters and emergencies can affect San Francisco.
- Review the steps to get prepared for any emergency.
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