Las Vegas Weather
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Live forecasts update automatically; written guidance last reviewed 14 June 2026 by the Pressorbit weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
While the UK rarely sees a week of unbroken sunshine, Las Vegas offers a stark contrast: an average of 300 clear days per year. The live forecast above shows the current conditions in the Mojave Desert — far removed from Britain’s maritime climate — where summer highs can exceed 40°C.
What does the live forecast tell you about Las Vegas?
The live conditions above give you a real-time snapshot of Las Vegas weather. Because the city sits in a high desert basin, day-to-day changes are small compared to the UK. The 14‑day forecast and 21‑day outlook shown here are useful for planning flights and accommodation, but be aware that long‑range predictions become less reliable beyond 10 days. For a fuller picture, combine the live data with the monthly averages below.
Las Vegas weather by month
The desert climate means sharp seasonal contrasts. Winters are mild and sunny; summers are intensely hot and dry. The following table summarises typical conditions for each season.
Month‑by‑month, January is the coolest (average high 14°C, low 3°C), while July and August are the hottest with highs regularly above 40°C. The las vegas weather in celsius figures above are taken from 30‑year Met Office normals for McCarran International Airport. Sunshine is abundant year‑round, averaging 10–14 hours per day from spring through autumn.
When is the best time to visit Las Vegas?
For most British travellers, the optimal window is March to May or September to November. During these shoulder months, daytime temperatures are warm (20–31°C) but not oppressive, and evening lows are comfortable for dining and shows. Summer (June–August) can be punishing for outdoor sightseeing, with heatstroke a real risk if you are not prepared. Winter (December–February) is pleasant for golf and hiking, though nights are cold.
If you are checking the las vegas weather next 30 days or las vegas weather next 15 days before booking, focus on the seasonal trend rather than exact numbers. A 14‑day forecast gives a good sense of whether a heatwave or a rare cold snap is expected.
What to pack for Las Vegas weather
Pack layers, even in summer. The desert cools rapidly after sunset. For a trip in las vegas weather december, bring a warm jacket for evenings (lows around 3°C) and light layers for daytime (highs 14–16°C). In summer, loose, light‑coloured clothing, a wide‑brimmed hat, and high‑SPF sunscreen are essential. Comfortable walking shoes are a must year‑round — many hotel‑casino complexes are vast.
Unlike the UK, umbrellas are rarely needed; annual rainfall is only about 100 mm. However, when rain does occur (mainly in winter), it can be heavy and cause flash flooding in the desert, so check the weather in las vegas 10 days before leaving your hotel.
Rainy season and quiet months
Las Vegas has no true rainy season, but winter months (December to February) receive the most precipitation — typically 10–15 mm per month. The driest period is late spring and early summer. The quietest months for tourism are January and February (excluding major holiday weekends), when hotel rates drop and the Strip is less crowded. September is also relatively calm after the summer peak, though temperatures remain high.
For a desert comparison, see our guide to Dubai weather — another destination where summer heat dominates. If you prefer milder conditions, Barcelona weather offers a Mediterranean alternative, while our UK weather hub helps you plan your departure from Britain.
Frequently asked questions
How hot is Las Vegas in December?
December in Las Vegas is mild by desert standards. Average daily highs are around 14°C, with lows dropping to 3°C. You can expect 7–8 hours of sunshine each day, though it can feel chilly when the sun goes down. It is not a beach destination — pack a warm jacket.
What is the hottest month in Las Vegas?
July and August tie for the hottest period, with average high temperatures of 41°C and lows around 27°C. These months also have the lowest rainfall — often less than 5 mm. Staying hydrated and avoiding midday sun is essential if you visit in summer.
Does Las Vegas have a monsoon season?
Technically, the North American monsoon can bring brief, intense thunderstorms from July to September, but they are sporadic. Rainfall remains low, and most days are clear. The las vegas weather forecast 21 day will rarely show prolonged wet spells.
Can I use a 10‑day forecast for Las Vegas accurately?
A las vegas weather 14 day forecast or 10 days outlook is reasonably reliable for high‑desert locations because the weather is stable. However, any forecast beyond 7 days should be treated as a trend. For up‑to‑date predictions, check the live forecast above and our 10‑day forecast page.
