Las Vegas in September
In September, Las Vegas averages 35°C (94°F) during the day and 22°C (71°F) at night, with only about 3 rainy days.
Off-peakConditions are very hot — early-morning and evening sightseeing recommended. Skies are generally dry and clear.
It's peak hurricane season in Las Vegas during September. Travel is possible but expect storm risk, possible flight disruption, and generally lower travel insurance coverage.
How September compares to the rest of the year in Las Vegas
September is in the middle of the year for warmth in Las Vegas (4th of 12) and moderately rainy compared to the rest of the year (9th of 12). Daytime temperature runs 8°C above the annual average (27°C). September runs 4°C cooler than August (39°C) and cools 7°C in October (27°C).
September sunrise & sunset in Las Vegas
Times shown for Las Vegas local time (America/Los_Angeles), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Las Vegas — September
Golden-hour and blue-hour windows for the 15th of September, in Las Vegas's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Las Vegas in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Off-peak) and Las Vegas's popularity.
Crowds & pricing — September in Las Vegas
This is off-peak for Las Vegas — the lowest prices of the year and the fewest crowds, but with real trade-offs: some restaurants, hotels, and beach businesses may close for the season; weather conditions can make outdoor activities unpredictable; and a handful of seasonal sights run reduced hours or close entirely. Great if you prefer a quiet local rhythm and don't mind the climate giving you reasons to choose indoor activities.
Why this tier: peak hazard season (1 active)
Sun & mosquito risk — September in Las Vegas
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Las Vegas in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 15°C / 58°F | 4°C / 40°F | 21 mm | 6 | — |
| February | 18°C / 64°F | 6°C / 42°F | 14 mm | 5 | — |
| March | 22°C / 71°F | 10°C / 49°F | 12 mm | 7 | — |
| April | 27°C / 81°F | 14°C / 57°F | 6 mm | 4 | — |
| May | 31°C / 88°F | 18°C / 64°F | 4 mm | 4 | — |
| June | 38°C / 101°F | 24°C / 75°F | 2 mm | 2 | — |
| July | 40°C / 104°F | 27°C / 81°F | 9 mm | 7 | — |
| August | 39°C / 102°F | 26°C / 79°F | 19 mm | 6 | — |
| September | 35°C / 94°F | 22°C / 71°F | 9 mm | 3 | — |
| October | 27°C / 81°F | 15°C / 59°F | 6 mm | 3 | — |
| November | 19°C / 67°F | 8°C / 47°F | 9 mm | 2 | — |
| December | 14°C / 56°F | 4°C / 39°F | 15 mm | 5 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Las Vegas in September →
Frequently asked questions
How hot is Las Vegas in September?
In September, Las Vegas averages a high of 35°C (94°F) and a low of 22°C (71°F) — generally hot.
Does it rain a lot in Las Vegas in September?
September is generally dry in Las Vegas, with about 3 rainy days on average.
Is September a good time to visit Las Vegas?
September is hot and mostly dry. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Las Vegas in September?
Pack lightweight, breathable clothing, sunglasses and sunscreen. See the full September packing list for Las Vegas for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.