I-15 · UT / AZ / NV
Salt Lake City to Las Vegas drive weather
Salt Lake City, UT to Las Vegas, NV · 422 miles, about 5 h 43 min by the planner's route
Also covers the drive back from Las Vegas to Salt Lake City.
The drive from Salt Lake City to Las Vegas follows I-15 the whole way: south through Utah County, past Fillmore, Beaver and Cedar City to St. George, through the Virgin River Gorge in the corner of Arizona, and across the desert to Las Vegas.
Plan this drive with your own departure timeConditions at Fri, 1:00 AM MST
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 5 h 43 min.
Conditions: Partly cloudy, Clear with periodic clouds, Clear and more
Checkpoints along I-15
| Where | You pass | Weather | Risk | Why |
|---|---|---|---|---|
| Salt Lake City, UT | Fri 2:00 AM | 42°F | low | Nothing flagged |
| Lindon, UT | Fri 2:30 AM | 40°F | low | Nothing flagged |
| Mona, UT | Fri 3:00 AM | 38°F | low | Nothing flagged |
| Gunnison, UT | Fri 3:30 AM | 36°F | low | Nothing flagged |
| Fillmore, UT | Fri 4:00 AM | 38°F | low | Nothing flagged |
| Beaver, UT | Fri 4:30 AM | 34°F | low | Nothing flagged |
| Parowan, UT | Fri 5:00 AM | 33°F | low | Nothing flagged |
| Cedar City, UT | Fri 5:30 AM | 36°F | low | Nothing flagged |
| Washington, UT | Fri 6:00 AM | 45°F | low | Nothing flagged |
| Beaver Dam, AZ | Fri 6:30 AM | 50°F | low | Nothing flagged |
| Moapa Town, NV | Fri 7:00 AM | 52°F | low | Nothing flagged |
| Nellis Air Force Base, NV | Fri 7:30 AM | 51°F | low | Nothing flagged |
| Las Vegas, NV | Fri 7:42 AM | 57°F | low | Nothing flagged |
Weather to know about on this drive
- Two NWS offices cover the drive: Salt Lake City for all of Utah, including Cedar City and St. George, and Las Vegas from the Arizona Strip through the Virgin River Gorge to Las Vegas.
- The drive runs through three states, each with its own road authority: UDOT in Utah, ADOT for the Virgin River Gorge, Nevada DOT from Mesquite to Las Vegas.
- The Utah stretch is hundreds of miles of mountain-valley interstate; conditions in Salt Lake City say little about Beaver or Cedar City hours later. Check the checkpoints on this page for the hour you would reach them.
Official sources for every state on the route
Questions about driving from Salt Lake City to Las Vegas
- What is the weather like driving from Salt Lake City to Las Vegas in winter?
- It changes along the way: winter weather in central and southern Utah, desert from St. George south. NWS Salt Lake City forecasts the Utah stretch and NWS Las Vegas the rest. This page shows alerts from both and scores each checkpoint for the hour you would reach it.
- Where do I check I-15 road conditions?
- UDOT Traffic for Utah, Arizona 511 for the Virgin River Gorge and Nevada 511 from Mesquite to Las Vegas.
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