Las Vegas Weather in September
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.
Rainfall in Las Vegas in September
The climate data from previous years indicates about 2 days of rain, averaging 6.1 mm (0.2 in) for the month. The odd shower may pass through, but it usually doesn't amount to much. A largely dry month overall.
Temperature in Las Vegas in September
In September, Las Vegas sees extremely high temperatures, with highs of 35°C (95°F). Nights drop to around 22°C (72°F). The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. With overnight lows of 22°C (72°F), evenings stay pleasantly warm.
Sunshine in Las Vegas in September
The days are predominantly sunny, with an estimated total of around 345 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.
Wind Speed in Las Vegas in September
In September, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.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.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Las Vegas's climate page.
Las Vegas Temperature in September
Min Temperature
22°C (72°F)
Max Temperature
35°C (95°F)
Chance of Rain
7%
Precipitation
6.1 mm (0.2 in)
Rainy days
2 days
Humidity
25%
Windspeed
4 m/s (8 knots)
Sunshine
345 hours
Percentage Sunshine
91%
Daily Historical Temperatures
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).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Las Vegas in September
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.
Las Vegas historical weather extremes in September
Our historical data for Las Vegas spans 1976 to 2025, revealing these weather extremes.
- On September 6, 2020, temperatures climbed to 45°C (113°F), marking the warmest September day on record.
- Nighttime temperatures dropped to 8°C (46°F) on September 30, 1982, marking the coldest September night on record.
Best Places in the United States of America in September
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 →
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What to Wear in Las Vegas in September
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.What To Do in Las Vegas in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Las Vegas's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Las Vegas climate overview or explore weather in the United States of America.
