7
Very High
Extreme Heat Risk in San Jose, CA
Risk Level: Very High — Score 7/10
FEMA: 7Historical: 10
Key Risk Factors
- FEMA rates San Jose's county as Relatively High risk
- Estimated annual loss of $23M from this hazard type
- 13 events recorded in proximity in recent decades
- 12 events in the last 12 months indicate ongoing risk
- Average annual frequency: 8.0 events per year
Peak season: June-September
Last significant event: Extreme Cold - San Francisco Bay Area and Interior Monterey County, California, United States (2026-02-20) — 2,100,000 people exposed
Highest Risk Cities for Extreme Heats
San Jose is not in the top 10 for extreme heat risk among tracked cities.
How San Jose Compares
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Notable Extreme Heat Events Near San Jose
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
Heat Advisory - California, United States
June 7, 2015 — ADVISORY
Impact data not available
Extreme Cold - San Francisco Bay Area and Interior Monterey County, California, United States
February 19, 2026 — WARNING
2,100,000 people exposed; $471,683M capital exposed
Extreme Cold - San Francisco Bay Area and Central Coast, California, United States
February 19, 2026 — WARNING
2,100,000 people exposed; $471,683M capital exposed
Cold Weather - North Bay and Southern Salinas Valley, California, United States
February 17, 2026 — ADVISORY
873,000 people exposed; $180,863M 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 Jose
Score: 9/10
Wildfire Risk in San Jose
Score: 5/10
Hurricane Risk in San Jose
Score: 0/10
Flood Risk in San Jose
Score: 9/10
Tornado Risk in San Jose
Score: 3/10
Winter Storm Risk in San Jose
Score: 1/10
Landslide Risk in San Jose
Score: 7/10
Drought Risk in San Jose
Score: 7/10
High Wind Risk in San Jose
Score: 1/10
Tsunami Risk in San Jose
Score: 1/10
Extreme Heat Risk in Oakland, CA
Score: 7/10
Extreme Heat Risk in San Francisco, CA
Score: 5/10
Extreme Heat Risk in Sacramento, CA
Score: 5/10
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