Lightning Map San Jose, CA
Real-time lightning tracking for San Jose, California. This city averages 6 thunderstorm days per year, making lightning awareness important for San Jose residents and visitors.
Data sourced from NOAA GOES-19 GLM and the Storm Prediction Center.
Real-Time Lightning Near San Jose
Monitor live lightning strikes and approaching storms
Live Lightning Data for San Jose
App links are added after release. For now, use this city page plus the nearby-lightning and alert guides to make faster weather and safety calls in San Jose.
App links go live at release. For now use the lightning maps and guides on this site.
Thunderstorm Season in San Jose
When to expect lightning activity in San Jose, CA
Thunderstorm season in San Jose spans from April through September. Peak lightning activity occurs in June and July, when warm, moist air from the south collides with cooler air masses. Spring severe weather season from March through May can produce dangerous storms.
Compared to the national average of approximately 25 thunderstorm days per year, San Jose sees 19 fewer days of thunderstorm activity. The California statewide average is 15 days.
Lightning Safety Tips for San Jose
Essential guidelines to stay safe during thunderstorms
30-30 Rule
When you see lightning, count to 30. If you hear thunder before reaching 30, get indoors. Wait 30 minutes after the last thunderclap before going outside.
Seek Shelter
With 6 thunderstorm days annually, residents of San Jose should always have a shelter plan. Move inside a substantial building or hard-topped vehicle.
Stay Informed
Use Lightning Tracker to monitor real-time lightning near San Jose. Set alerts for your neighborhood to get advance warning of approaching storms.
Avoid Open Areas
Stay away from open fields, hilltops, isolated trees, and bodies of water during storms. If hiking, descend from ridges and peaks immediately.
Useful Guides for San Jose
These guides match the nearby-lightning and alert questions people ask most often
Use this guide to judge nearby strike danger fast, especially when storms are building near your neighborhood.
Alerts Best alert options for San Jose stormsSee how app alerts, NOAA weather radio, and local warnings work when storms move toward your city.
Map guide How to read live lightning around San JoseUnderstand strike clusters, motion, and timing so you can decide when to get indoors.
Nearby Cities in California
Monitor lightning in other California cities