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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Perspective Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Las Vegas sees its mildest weather from March through May and again from October into November, with daytime highs ranging from the low 20s to low 30s Celsius. July and August are the hottest months, regularly reaching above 40°C, while December and January are the coolest, with overnight lows near 4°C.
What is the weather like in Las Vegas each month?
Las Vegas sits in the Mojave Desert, so the climate is defined by intense summer heat and mild winters. January highs average around 14°C, climbing steadily to 21°C in April and peaking at 40°C in July. August remains near 39°C, then September drops to 35°C. October brings comfortable highs near 27°C, and November cools to 18°C before December settles at 13°C. The live forecast above shows current conditions, but for a deeper look at the Las Vegas weather page, you can track week-by-week shifts.
How does the Las Vegas average temperature vary by week?
If you are checking the las vegas average temperature by week, expect the first week of July to be the hottest, often above 41°C. The third week of January is typically the coolest, with highs near 13°C and lows around 3°C. For a broader view of desert climates, see our Arizona weather page, which shares similar summer heat patterns.
What is the las vegas weather by month in degrees Celsius?
January: 14°C high / 4°C low; April: 26°C / 13°C; July: 40°C / 27°C; October: 27°C / 15°C. December: 13°C / 3°C. These are averages—check the live forecast above for current readings.
Can I get a las vegas weather in october 10-day forecast?
Yes, the live forecast above provides a 10-day outlook for October. October is one of the best months to visit, with highs near 27°C and lows around 15°C—ideal for outdoor activities.
What is the las vegas climate today compared to the monthly average?
The las vegas climate today might differ from the monthly average due to passing weather systems. The live forecast above gives real-time conditions, while monthly averages reflect long-term data from Environment and Climate Change Canada.