SeasonScore
Las Vegas, United States
Photo: Pcb21 · CC BY-SA 3.0

United States

Las Vegas in September

🔥 Hot season

Hot and mostly dry.

🎒 Pack: light, breathable clothes & sunscreen · sunglasses & hat

Best months: Apr (9.7), Oct (9.7), Mar (9.5)

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Why September scores 9.1What goes into the score

How it works
🌡️ 35° / 22°C🌧️ 8 mm💧 dew pt 4°🍃 PM2.5 4
  • Weather comfort8.7
    • !Hot (35°C highs / 22°C lows)
    • ✓Comfortable humidity (dew point 3.7°C)
    • ✓Mostly dry (~8 mm rain)
  • Air quality10.0
    • ✓Good (within WHO guideline) (PM2.5 ~4 µg/m³)
  • Seasonal hazards10.0
    • ·No notable seasonal hazards
  • Safety baseline7.5
    • ·Increased caution
Compare monthsPut September side by side with another month
SepApr
Score9.1 Excellent9.7 Excellent
Season🔥 Hot season☀️ Warm dry season
High / low35° / 22°26° / 14°
Rain8 mm5 mm
Humiditydew pt 4°dew pt -2°
PM2.54 µg/m³6 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast). Temperatures: Las Vegas Airport weather-station normals. Rainfall: Harry Reid International Airport weather-station normals (national met service).

Holidays & crowdsSeptember 2027

Long weekend

There's at least one long weekend. Domestic travel picks up and popular spots get busier over those days.

  • Labor Day 4–6 Sep · 3 days off in a row

National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).

Explore Las VegasEvents, sights, food & souvenirs

Check event dates locally

A desert resort city in Nevada, visited for casinos, shows, dining, conventions and as a base for Grand Canyon and Red Rock trips.

Events in September

No major events on our calendar for September.

Coming up later

Las Vegas Grand PrixDate variesUsually November

A night Formula 1 race on city streets.

Why go: Roads around the Strip close and hotel rates rise.

Where: Street circuit on and around the Strip

New Year's Eve fireworksEvery year31 December every year

Fireworks are launched from several resort rooftops.

Why go: The Strip closes to cars; hotel rates peak.

Where: The Strip

National Finals RodeoDate variesUsually early to mid-December

Ten days of top-level rodeo competition.

Why go: Cowboy-themed events take over the city.

Where: Thomas & Mack Center