LA to San Francisco — Weather & Driving Conditions
Driving from Los Angeles, CA to San Francisco, CA? This 382-mile route follows I-5, US-101, CA-1. TripCaptain checks the weather at every stop along the way — not just at each end — so you can see where conditions change before you pick a departure time.
What to watch for on this route
TripCaptain flags black ice, dense fog, heavy snow, high wind, heavy rain, and low visibility segment by segment between Los Angeles, CA and San Francisco, CA, and gives the trip a clear Hazard Score™ — a 0-100 read where higher is safer.
- Dense Fog: Tule fog in the Central Valley (I-5) is the deadliest weather hazard in California — visibility can drop below 50 meters.
- High Wind: Altamont Pass and Pacheco Pass on I-5/I-580 see sustained winds over 60 km/h.
- Heavy Snow: Tejon Pass (I-5, Grapevine) can close due to snow November through March.
When to go, season by season
- Spring (Mar–May): Excellent driving conditions. PCH is stunning but watch for rockslides after rain.
- Summer (Jun–Aug): Clear and safe. Central Valley can be very hot on I-5. PCH has coastal fog in the morning.
- Fall (Sep–Nov): Tule fog season begins in November. Central Valley visibility can be near-zero.
- Winter (Dec–Feb): Grapevine closures possible. Tule fog at its worst. PCH landslides after heavy rain.
Pick the safest time to leave
Compare departure windows for LA to San Francisco and choose the one with the lowest risk and the arrival time you want.
Fuel, EV range, and rest stops
See a weather-adjusted fuel or EV energy estimate for the drive, sensible break points across the 382 miles, and a packing list matched to the conditions ahead.