California lightning map
Thunderstorms are uncommon along California's coast but flare up over the Sierra and southeastern deserts during summer monsoon surges.
Cities in California
Track lightning anywhere in California.
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Frequently asked
How many thunderstorm days does California get?
California averages about 10 thunderstorm days a year, versus a US average near 25. Activity peaks July–September.
When is thunderstorm season in California?
Lightning is most frequent July–September in California.