I-15 · CA / NV
Los Angeles to Las Vegas drive weather
Los Angeles, CA to Las Vegas, NV · 269 miles, about 3 h 58 min by the planner's route
Also covers the drive back from Las Vegas to Los Angeles.
The drive from Los Angeles to Las Vegas follows I-15 over Cajon Pass and across the Mojave Desert past Barstow to the Nevada line at Primm. Cajon Pass is the one place on the drive where snow closes the road, and a storm can put snow on the pass while it rains in San Bernardino.
Plan this drive with your own departure timeConditions at Fri, 12:00 AM PST
Highest risk along I-15: 1 of 5 (low), departing at that time.
- No active NWS alerts on this route.
The road authority linked below has the final word on closures and chain requirements.
Clear driving for the whole 3 h 58 min.
Conditions: Clear
Checkpoints along I-15
| Where | You pass | Weather | Risk | Why |
|---|---|---|---|---|
| Los Angeles, CA | Fri 1:00 AM | 61°F | low | Nothing flagged |
| Claremont, CA | Fri 1:30 AM | 58°F | low | Nothing flagged |
| Oak Hills, CA | Fri 2:00 AM | 52°F | low | Nothing flagged |
| Lenwood, CA | Fri 2:30 AM | 50°F | low | Nothing flagged |
| Fort Irwin, CA | Fri 3:00 AM | 49°F | low | Nothing flagged |
| I-15 between Fort Irwin, CA and Sandy Valley, NV | Fri 3:30 AM | 56°F | low | Nothing flagged |
| Sandy Valley, NV | Fri 4:00 AM | 43°F | low | Nothing flagged |
| Enterprise, NV | Fri 4:30 AM | 45°F | low | Nothing flagged |
| Las Vegas, NV | Fri 4:57 AM | 54°F | low | Nothing flagged |
Weather to know about on this drive
- Cajon Pass, at 3,777 ft between San Bernardino and the High Desert, closes a few times each winter when snow and spinouts pile up; the CHP closes I-15 at the bottom on both sides.
- Beyond Barstow, the high desert to Primm can see blowing dust and, rarely, snow near Mountain Pass (4,730 ft) close to the Nevada line.
- Sunday-evening traffic back to Los Angeles plus any closure at Cajon means multi-hour backups.
- Three NWS offices cover the drive: Los Angeles for the Los Angeles basin, San Diego for Cajon Pass and Victorville, and Las Vegas from the Mojave east of Barstow to Las Vegas. This page shows alerts from all three.
Official sources for every state on the route
Mountain passes and corridors on this drive
Questions about driving from Los Angeles to Las Vegas
- What is the weather like driving from Los Angeles to Las Vegas in winter?
- Mostly dry, but Cajon Pass can get snow from a cold Pacific storm while San Bernardino gets rain, and the high desert can see blowing dust or, rarely, snow near Mountain Pass. Check the forecast for the hour you will cross Cajon, not the Los Angeles or Las Vegas forecast.
- Which part of the drive is most affected by weather?
- Cajon Pass. Closures are usually a few hours but have lasted overnight, and there is no equivalent alternate route. The checkpoints on this page include the pass, scored for the hour you would reach it leaving now.
Conditions change by the hour. This page is a planning aid built on public forecasts and DOT feeds; the road authorities linked above have the final word on closures and chain requirements.
Traveling for the holiday? Read Thanksgiving travel weather · all holiday drives · winter road conditions by corridor