Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
September in Las Vegas brings extremely high temperatures, with daytime highs of 35°C (95°F) and nights around 22°C (72°F). Only 6.1 mm (0.2 in) of rainfall is typical, making it a largely dry month.
Our weather planner can help you find worldwide destinations with pleasant weather during this period. February, March, April, October and November typically offer the best weather for Las Vegas.
Pick a month to see the average temperature, rainfall and sunshine in Las Vegas - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Las Vegas typically drop from around 37°C (99°F) at the start of September to approximately 33°C (91°F) by the end. Nights are warm, with lows typically ranging from 19°C (66°F) to 25°C (77°F).
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Las Vegas spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Our historical data for Las Vegas spans 1976 to 2026, revealing these weather extremes.
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Pack for serious heat in Las Vegas in September. Prioritize clothing that breathes and doesn't cling or stick. Lightweight cotton, linen, and moisture-wicking fabrics are ideal. A wide hat provides welcome shade. Dry conditions mean you won't need to worry about rain protection. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Las Vegas climate overview or explore weather in the United States of America.
Where to go in September - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
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