What should you know about Las Vegas's weather?
- NWS office
- Las Vegas (VEF)
- Climate
- Hot desert
- Time zone
- PST/PDT
- Elevation
- 2,006 ft
- Coordinates
- 36.17° N, 115.14° W
- Nearest radar
- KESX · Las Vegas NEXRAD · 35 mi
- County
- Clark County, NV
- Yearly rain
- 4 in
- Warmest month
- July · 91.8°F average
- Coldest month
- December · 47.2°F average
- Severe storm peak
- Jul to Sep
How much rain does Las Vegas get each month?
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 58.0 | 62.4 | 70.5 | 77.9 | 87.8 | 98.6 | 103.8 | 102.1 | 94.2 | 80.5 | 66.8 | 56.3 |
| Low °F | 39.4 | 42.7 | 48.5 | 55.0 | 64.2 | 73.7 | 79.8 | 77.5 | 70.2 | 57.5 | 45.5 | 38.0 |
| Rain (in) | 0.67 | 0.82 | 0.51 | 0.23 | 0.08 | 0.01 | 0.13 | 0.22 | 0.24 | 0.35 | 0.29 | 0.44 |
| Month | High °F | Low °F | Rain (in) |
|---|---|---|---|
| Jan | 58.0 | 39.4 | 0.67 |
| Feb | 62.4 | 42.7 | 0.82 |
| Mar | 70.5 | 48.5 | 0.51 |
| Apr | 77.9 | 55.0 | 0.23 |
| May | 87.8 | 64.2 | 0.08 |
| Jun | 98.6 | 73.7 | 0.01 |
| Jul | 103.8 | 79.8 | 0.13 |
| Aug | 102.1 | 77.5 | 0.22 |
| Sep | 94.2 | 70.2 | 0.24 |
| Oct | 80.5 | 57.5 | 0.35 |
| Nov | 66.8 | 45.5 | 0.29 |
| Dec | 56.3 | 38.0 | 0.44 |
LAS VEGAS AIR TERMINAL, NV US · 4 mi away · NOAA NCEI U.S. Climate Normals 1991 to 2020
Why does Las Vegas flood so fast?
The ground sheds water instead of soaking it up. The alluvial fans around the valley are coated with caliche, which is almost impervious, so almost all the rain that falls on it runs off. Roads built on those fans can act as rivers and channel the runoff into neighborhoods. Many city streets also have no storm drains, or drains that cannot handle moderate to heavy rain.
What happened in the July 8, 1999 Las Vegas flash flood?
Much of the valley got 1.5 to 3.0 inches of rain in 60 to 90 minutes, which was 35% to 70% of its annual rainfall of 4.13 inches at the time. The runoff caused widespread street flooding and record flows in normally dry washes and flood control detention basins. The floods caused over $20,000,000 in property damage and took two lives. Las Vegas and Clark County firefighters performed more than 200 swift-water rescues, and President Clinton declared the city a disaster area on July 19.
When is monsoon season in Las Vegas?
National Weather Service offices across the Southwest define the monsoon as June 15 to September 30. A stretch of extreme heat is usually underway when it starts, and an influx of moisture then brings daily rounds of thunderstorms. In Las Vegas, June itself is the driest month of the year. From 1991 to 2020 the city saw only 12 days of measurable precipitation in June, and only once did it record more than 0.25 inches.
Where is the Las Vegas weather radar?
KESX is about 35 miles from the city center and sits at 4867 feet, well above the city center at 2006 feet. Radar beams travel in a straight line and do not follow the curve of the Earth. For a storm far from the radar, the lowest scan may only see into the middle of the storm. Use the loop to time storms and follow NWS Las Vegas warnings for what happens near the ground.
Why are Las Vegas nights getting warmer?
A lot of it comes from the city's growth. NWS Las Vegas says the mean low temperature rose from 53.3 degrees in the 1970s to 60.3 degrees in 2010 to 2019, an increase of 7 degrees. It says a lot of this can be attributed to the explosive development since the 1970s, resulting in significant influence from the urban heat island effect. Pahrump, by comparison, rose only 1.8 degrees over the same span. Warm nights give little relief in a heat wave, so check the hourly lows too.
How many 100°F days does Las Vegas get?
The Las Vegas airport averages 78.2 days a year at 100°F or hotter under 1991 to 2020 normals. It averages 137.1 days at 90°F or hotter. A clear radar on those days does not mean safe conditions, so plan outdoor work and hikes for early morning.
When should you check the Las Vegas radar?
Severe storm peak
July to SeptemberAbout 86% of Clark County's 1996 to 2025 severe reports fall from July to September. When cells build over the mountains west of town, locals check the loop before heading out to Red Rock Canyon.
Freeze season
December 15 to January 20These are the median dates of the first and last 32°F freeze at the Las Vegas airport under 1991 to 2020 normals, and snowfall there averages just 0.2 inches a year. Check the hourly low before a dawn drive on I-15.
What else do people ask about the Las Vegas radar?
Which NWS office and radar cover Las Vegas?
NWS Las Vegas (VEF) issues forecasts and warnings for Las Vegas. The nearest NEXRAD radar is KESX, about 35 miles from the city center.
How often does the radar on this page update?
The radar loop on this page updates every 5 minutes.
Is this page an official warning service?
No. It shows radar and forecasts only. For warnings, follow NWS Las Vegas and local emergency alerts.
Quick facts
- Radar: KESX (Las Vegas NEXRAD), a new frame every 5 minutes
- Forecasts and warnings: NWS Las Vegas (VEF)
- Severe storms peak from July to September (NOAA Storm Events, 1996 to 2025)
- Local time: PST/PDT
- Radar: KESX, a new frame every 5 minutes
- Warnings: NWS Las Vegas (VEF)
- Severe storms: July to September
- Local time: PST/PDT
Where does this data come from?
- NOAA NEXRAD radar via Iowa Environmental Mesonet
- National Weather Service, Las Vegas office
- NOAA NCEI U.S. Climate Normals 1991 to 2020: LAS VEGAS AIR TERMINAL, NV US
- NOAA NCEI Storm Events Database, 1996 to 2025
- USGS Elevation Point Query Service
- GOES-East satellite imagery
- Open-Meteo forecast API
- OpenStreetMap contributors
- National Weather Service Western Region: The Las Vegas flash floods of 8 July 1999
- NWS Las Vegas: 1991 to 2020 climate normals
- National Weather Service: Monsoon safety in the Southwest
- National Weather Service: Shortcomings of NWS radar
- NOAA NCEI: 1991 to 2020 annual normals, Las Vegas airport