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Live forecasts update automatically; written guidance last reviewed 13 June 2026 by the Insight Britain weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Las Vegas has a hot desert climate with very low rainfall, long sunny spells and mild winters. The live forecast above shows current conditions; typical summer highs exceed 40°C, while winter days hover around 15°C. Travellers planning a trip should check the 10-day and 14-day outlook for precise timing.
What is the climate like in Las Vegas?
Las Vegas sits in the Mojave Desert, giving it an arid climate defined by intense summer heat, mild winters and abundant sunshine year-round. Humidity is low, so the heat feels less oppressive than in humid destinations. Rain is scarce – the city averages only about 100 mm of precipitation annually, most of which falls during brief winter storms. Snow is extremely rare.
Las Vegas weather by month – what to expect throughout the year
Temperatures vary hugely by season. The las vegas weather by month guide below shows monthly averages in Celsius, helping you pick the right time for your visit.
Winter (December to February)
Daytime highs range from 14°C to 16°C, but nights can drop to 3–4°C. Las Vegas weather December is cool but bright – average daily sunshine is around 7 hours. Rainfall peaks slightly in February, though totals remain low. A light jacket or sweater is essential for evenings.
Spring (March to May)
March warms to around 20°C, rising to 31°C by May. This is one of the most pleasant periods, with clear skies and very little rain. Spring sees some of the lowest hotel rates outside major events.
Summer (June to August)
Blazingly hot. July and August average highs of 41°C, with occasional spikes above 45°C. The desert sun is intense – use sunscreen and stay hydrated. Many pools are open, and air-conditioned casinos offer a cool retreat. Overnight lows stay around 27°C, so the heat lingers.
Autumn (September to November)
September still reaches 36°C, but October cools to a very comfortable 27°C, and November drops to 18°C. Autumn offers some of the best weather for outdoor activities such as hiking at Red Rock Canyon. Rainfall remains minimal.
When is the best time to visit Las Vegas?
For most travellers, March to May and October to November are ideal – the weather in las vegas 10 days forecast at those times typically shows warm, dry days without extreme heat. If you enjoy poolside heat and don’t mind high temperatures, June to August can work, but you’ll be indoors during peak sun hours. Winter is good for shows, dining and gambling, though evenings are chilly.
What should I pack for Las Vegas?
Pack layers. For summer, lightweight cotton clothing, a wide-brimmed hat, sunglasses and strong sunscreen are essential. A light sweater is useful for air-conditioned casinos. In winter, bring a warm coat for evenings. Comfortable walking shoes are vital – the Strip is long. A reusable water bottle is also recommended, especially in the hotter months.
How accurate are the extended forecasts?
The live forecast above provides a las vegas weather 14 day forecast and a las vegas weather forecast 21 day outlook. For desert climates, short-range forecasts (10-day) are highly reliable for temperatures and sunshine, but precipitation predictions become less certain beyond a week. The las vegas weather next 15 days and even las vegas weather next 30 days outlooks are useful for trend awareness – they can flag a coming heatwave or cool spell, but exact daily temperatures should be checked closer to your trip.
For comparison, you can explore our UK weather hub or see how conditions compare in other popular holiday destinations such as Dubai weather or Barcelona weather.
How hot is Las Vegas in July?
July average highs reach 41°C, with overnight lows around 27°C. The sun is intense, and humidity is very low – you will feel the heat but not a sticky one. It is the hottest month, so plan outdoor activities for early morning or late evening. Air conditioning is everywhere, but heat exhaustion is a real risk if you are not careful.
How cold is Las Vegas in January?
January daytime highs average 15°C, but nights fall to 3°C. Frost can occur in the suburbs, though snow is rare on the Strip. It is the coolest month but still pleasant for sightseeing if you dress warmly. The las vegas weather next 30 days often shows clear, sunny days in January, making it a good time for a winter break.
Does it rain a lot in Las Vegas?
No. Las Vegas receives only about 100 mm of rain per year – far less than any UK city. Most rain falls in short, heavy bursts between December and March. Summer thunderstorms are possible but infrequent. The las vegas weather december period sees slightly more precipitation than other months, but still typically fewer than 3 wet days.
When is the rainy season in Las Vegas?
Las Vegas does not have a true rainy season. The slightly wetter months are January, February and March, each averaging around 10–15 mm of rain. July and August can have isolated monsoon thunderstorms from the south-west, but they are brief. Most of the year is dry, so you are unlikely to have your holiday interrupted by rain.
What is the best month to visit Las Vegas for good weather?
October consistently offers the most comfortable mix of warmth and low humidity – highs of 27°C, lows of 14°C, and almost no rain. April and May are also excellent. For pool weather without extreme heat, June and September work, though September still touches 36°C. Check the 10-day forecast before booking.