Month-by-month travel weather
Las Vegas September weather
Las Vegas, United States · September
Days stay warm; evenings begin to cool down
September can still feel hot, especially at midday, but the month can gradually ease compared with peak summer.
Late in the month, evenings can cool down enough that a thin layer becomes useful again.
September averages at a glance
Average low
around 20–23°C
Average high
around 34–38°C
Average precipitation
around 5–15 mm
Rainy days
about 0–2 days
What to wear in September in Las Vegas
Actual feel will change with wind and rain, but use the suggestions below to build a comfortable layered outfit.
- • Daytime: summer clothes + sun protection.
- • Optional thin layer for evenings/indoors.
- • Hydration option helps.
Travel tips for visiting Las Vegas in September
- • Use evenings for longer outdoor time if possible.
- • Indoor/outdoor temperature swings can feel sharp.
September weather in Las Vegas — FAQ
Q. Is September still extreme heat?
A. Many days are still hot, but relief windows can appear as the month progresses.
Q. Does it rain?
A. Usually limited, with occasional showers possible.
Explore Las Vegas
These pages are connected so you can compare conditions and decide for yourself.