Los Angeles to Big Bear Lake — Weather & Driving Conditions

Driving from Los Angeles, CA to Big Bear Lake, CA? This 100-mile route follows CA-330, CA-18. 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

In the planner, TripCaptain highlights forecast weather risks between Los Angeles, CA and Big Bear Lake, CA and summarizes the analysis with a Hazard Score™ from 0 to 100. A higher score indicates lower forecast risk, without guaranteeing road conditions.

• Snow & chain controls: Winter storms drop the snow line to roughly 4,000 ft (1,220 m) on the CA-330/CA-18 climb, and posted traction laws can require chains or snow-rated tires long before you reach the 6,750 ft (2,060 m) summit at Big Bear Lake.
• Ridgeline fog: The Rim of the World stretch sits inside the cloud deck on damp days, dropping visibility below 400 m (¼ mile) on tight switchbacks with steep drop-offs.
• Black ice on shaded switchbacks: Shaded curves and bridge decks stay wet and refreeze after sundown, so black ice forms on the switchbacks even when the LA basin below is dry.
• Storm holds & closures: Heavy snow, rockfall, or burn-scar mudflow can hold or close CA-330 and CA-18 with little warning, gating the whole drive until the official pass status shows the road open again.

When to go, season by season

• Spring (Mar–May): Late-season storms can still whiten the summit into April. Check the official pass status the night before and leave mid-morning once the road is confirmed open.
• Summer (Jun–Aug): Easiest driving of the year. Start early to beat weekend traffic up the hill and watch for afternoon thunderstorms building over the ridge.
• Fall (Sep–Nov): Mild through October, but the first snow can arrive by November. Carry chains once nights turn cold and clear the ridgeline before mid-afternoon fog settles in.
• Winter (Dec–Feb): Peak hazard season. Snow and chain controls are common; leave mid-morning after the road is plowed and confirmed open, and never start up during an active storm hold.

Compare departure times

Open Los Angeles to Big Bear Lake in the planner to check the forecast for your date and compare nearby hours within your plan's limits. Save the trip to follow changing conditions in Live Mode.

Fuel, EV range, and rest stops

See a weather-adjusted fuel or EV energy estimate for the drive, sensible break points across the 100 miles, and a packing list matched to the conditions ahead.

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