Las Vegas (KLAS) Temperature Market Guide
KLAS • Harry Reid International Airport
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Las Vegas's Harry Reid International Airport (KLAS) offers a ForecastEx temperature market in the Mojave Desert. Known for extreme heat, intense sunshine, and dramatic temperature swings between day and night, Las Vegas provides exciting trading opportunities year-round.
Quick Facts
| Station Code | KLAS |
|---|---|
| Location | Las Vegas, NV |
| Coordinates | 36.0840°N, 115.1537°W |
| Elevation | 2,181 ft (665 m) |
| Timezone | PT (America/Los_Angeles) |
| NWS Office | Las Vegas (VEF) |
| Resolution Source | NWS CLI Report ↗ |
About the KLAS Weather Station
The KLAS ASOS is located at Harry Reid International Airport (formerly McCarran), approximately 5 miles south of the Las Vegas Strip. At 2,181 feet elevation in the Las Vegas Valley, the station sits in a bowl surrounded by mountain ranges.
The airport's position within the urban core of Las Vegas means it experiences significant urban heat island effects.
The airport's position within the urban core of Las Vegas means it experiences significant urban heat island effects.
Las Vegas Climate & Temperature Patterns
Las Vegas experiences a hot desert climate (Koppen: BWh) with extremely hot summers, mild winters, and very low humidity.
Key Climate Factors:
Intense Summer Heat: Las Vegas routinely reaches 110°F+ during summer, with even hotter temperatures possible during exceptional heat waves.
Large Diurnal Range: Desert climate creates significant day-to-night temperature swings, often 25-35°F.
Urban Heat Island: Las Vegas has one of the most intense urban heat islands in the nation.
Key Climate Factors:
Intense Summer Heat: Las Vegas routinely reaches 110°F+ during summer, with even hotter temperatures possible during exceptional heat waves.
Large Diurnal Range: Desert climate creates significant day-to-night temperature swings, often 25-35°F.
Urban Heat Island: Las Vegas has one of the most intense urban heat islands in the nation.
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Open Live DashboardSeasonal Trading Considerations
Winter (December - February):
Mild with average highs in the mid-50s°F. Pacific storms bring rain and occasionally cooler temperatures. Overnight lows can dip to near freezing.
Spring (March - May):
Rapid warming with temperatures climbing from the 70s to 100°F by late May. Windy conditions are common.
Summer (June - August):
Extremely hot with average highs of 105-108°F. 110°F+ is common. Monsoon moisture occasionally brings thunderstorms in July-August.
Fall (September - November):
Slow cooling from summer extremes. September remains very hot. By November, pleasant conditions return.
Mild with average highs in the mid-50s°F. Pacific storms bring rain and occasionally cooler temperatures. Overnight lows can dip to near freezing.
Spring (March - May):
Rapid warming with temperatures climbing from the 70s to 100°F by late May. Windy conditions are common.
Summer (June - August):
Extremely hot with average highs of 105-108°F. 110°F+ is common. Monsoon moisture occasionally brings thunderstorms in July-August.
Fall (September - November):
Slow cooling from summer extremes. September remains very hot. By November, pleasant conditions return.
Las Vegas-Specific Trading Tips
Monsoon Impacts: When monsoon moisture arrives (typically July-August), increased humidity slightly moderates maximum temperatures and thunderstorms can provide brief cooling.
Extreme Heat Precision: During heat waves, the difference between 112°F and 116°F matters. Track subtle factors like cloud cover, humidity levels, and wind.
Large Daily Range: With 25-35°F swings typical, the timing of any clouds or wind changes is important.
Extreme Heat Precision: During heat waves, the difference between 112°F and 116°F matters. Track subtle factors like cloud cover, humidity levels, and wind.
Large Daily Range: With 25-35°F swings typical, the timing of any clouds or wind changes is important.
Market Resolution Details
Las Vegas temperature markets resolve based on the official high temperature in the NWS CLI for station KLAS, issued by the Las Vegas forecast office (VEF).
Resolution Source: NWS CLI (Climatological Report)
Reporting Period: 12:00 AM to 11:59 PM Pacific Standard Time.
Resolution Source: NWS CLI (Climatological Report)
Reporting Period: 12:00 AM to 11:59 PM Pacific Standard Time.
Data Release Schedule
Typical release times for key data products at KLAS. Times shown in UTC.
| Data Type | Typical Time (UTC) | Variability |
|---|---|---|
| CLI Report Daily climatological summary |
08:26 UTC | ±7 min |
| 24hr High METAR with max temp |
07:56 UTC | ±1 min |
| METAR Hourly observations |
Hourly at :56 | ±1 min |
| DSM #1 Daily summary message |
00:17 UTC | Issuance time |
| DSM #2 Daily summary message |
00:17 UTC | Issuance time |
| DSM #3 Daily summary message |
00:19 UTC | Issuance time |
6-Hour High/Low Reports
These METARs include 6-hour maximum and minimum temperatures, useful for tracking intraday temperature trends.
05:56 UTC
11:56 UTC
17:56 UTC
23:56 UTC
Note: Times are approximate and may vary. CLI reports are the official resolution source for temperature markets. See NWS Data Guide for more information.
Data Resources
Quick links to official data sources and tools for Las Vegas.
📊 NWS Data
🗄️ Iowa Environmental Mesonet
📈 Wethr.net Tools
Forecasting Challenges
Extreme Heat Precision: Forecasting whether temperatures will reach 112°F vs 116°F during heat waves requires understanding subtle atmospheric factors.
Monsoon Uncertainty: Monsoon thunderstorm development is difficult to predict precisely.
Urban Heat Island: The intense urban heat island is difficult to quantify precisely.
Monsoon Uncertainty: Monsoon thunderstorm development is difficult to predict precisely.
Urban Heat Island: The intense urban heat island is difficult to quantify precisely.
Historical Temperature Records
Record High: 118°F recorded in July 1942 and June 2017.
Record Low: 8°F recorded in January 1937.
100°F+ Days: Las Vegas averages about 70-75 days per year at or above 100°F.
110°F+ Days: Las Vegas averages about 10-15 days per year at or above 110°F.
Record Low: 8°F recorded in January 1937.
100°F+ Days: Las Vegas averages about 70-75 days per year at or above 100°F.
110°F+ Days: Las Vegas averages about 10-15 days per year at or above 110°F.
📡 Official Data Sources
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