5
High
Extreme Heat Risk in San Francisco, CA
Risk Level: High — Score 5/10
FEMA: 5Historical: 10
Key Risk Factors
- Moderate risk rating based on FEMA National Risk Index
- Estimated annual loss of $5M from this hazard type
- 11 events recorded in proximity in recent decades
- 10 event(s) in the last 12 months
- Average annual frequency: 3.5 events per year
Peak season: June-September
Last significant event: Cold Weather - San Francisco Bay and North Monterey Coast, United States (2026-02-20) — 4,350,000 people exposed
Highest Risk Cities for Extreme Heats
San Francisco is not in the top 10 for extreme heat risk among tracked cities.
How San Francisco Compares
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Notable Extreme Heat Events Near San Francisco
Heat - San Francisco Bay Area, United States
September 22, 2025 — ADVISORY
5,800,000 people exposed; $1,570,080M capital exposed
Heat - San Francisco Bay Area, United States
September 22, 2025 — ADVISORY
5,800,000 people exposed; $1,570,080M capital exposed
Cold Weather - San Francisco Bay and North Monterey Coast, United States
February 19, 2026 — ADVISORY
4,350,000 people exposed; $1,186,959M capital exposed
Cold Weather - San Francisco Bay Area _ Monterey Coast, United States
January 9, 2026 — ADVISORY
4,310,000 people exposed; $1,053,093M capital exposed
Extreme Cold - San Francisco Bay Area _ Central Coast, California, United States
January 8, 2026 — WATCH
6,570,000 people exposed; $1,689,571M capital exposed
Extreme Heat Preparedness Tips
- 1.Stay hydrated — drink water regularly even if you don’t feel thirsty
- 2.Avoid outdoor activities during peak heat hours (10 AM – 4 PM)
- 3.Know the signs of heat exhaustion and heat stroke
- 4.Check on elderly neighbors and those without air conditioning
- 5.Never leave children or pets in a parked vehicle
Related Pages
Earthquake Risk in San Francisco
Score: 9/10
Wildfire Risk in San Francisco
Score: 1/10
Hurricane Risk in San Francisco
Score: 0/10
Flood Risk in San Francisco
Score: 7/10
Tornado Risk in San Francisco
Score: 3/10
Winter Storm Risk in San Francisco
Score: 1/10
Landslide Risk in San Francisco
Score: 7/10
Drought Risk in San Francisco
Score: 5/10
High Wind Risk in San Francisco
Score: 1/10
Tsunami Risk in San Francisco
Score: 5/10
Extreme Heat Risk in Oakland, CA
Score: 7/10
Extreme Heat Risk in San Jose, CA
Score: 7/10
Extreme Heat Risk in Sacramento, CA
Score: 5/10
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