7
Very High
Extreme Heat Risk in California
Overall State Risk Score: 7/10
California faces very high extreme-heat risk. Based on FEMA National Risk Index data for 8 major cities.
Seasonal pattern: June-September
Highest-Risk Cities in California
1
Los Angeles, CA
Very High · 7 historical events
FEMA: 7Historical: 10
2San Diego, CA
Very High · 4 historical events
FEMA: 7Historical: 10
3San Jose, CA
Very High · 13 historical events
FEMA: 7Historical: 10
4Fresno, CA
Very High · 2 historical events
FEMA: 7Historical: 9
5Long Beach, CA
Very High · 6 historical events
FEMA: 7Historical: 10
6Oakland, CA
Very High · 11 historical events
FEMA: 7Historical: 10
7San Francisco, CA
High · 11 historical events
FEMA: 5Historical: 10
8Sacramento, CA
High · 3 historical events
FEMA: 5Historical: 10
Notable Extreme Heat Events
Cold Weather - Northern Sierra Nevada and Western Plumas County, California, United States
February 19, 2026 — ADVISORY
Sacramento, CA
48,000 people exposed; $5,774M capital exposed
Cold Weather - San Francisco Bay and North Monterey Coast, United States
February 19, 2026 — ADVISORY
San Francisco, CA
4,350,000 people exposed; $1,186,959M capital exposed
Extreme Cold - San Francisco Bay Area and Interior Monterey County, California, United States
February 19, 2026 — WARNING
San Jose, CA
2,100,000 people exposed; $471,683M capital exposed
Cold Weather - North Bay and Southern Salinas Valley, California, United States
February 17, 2026 — ADVISORY
Oakland, CA
873,000 people exposed; $180,863M capital exposed
Other Hazards in California
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