September 18 is statistically one of the best days of the year in Las Vegas. With minimal rain risk (0%) and pleasant highs of 34°C, it's ideal for outdoor adventures. As it's peak season for Las Vegas, we recommend booking your stay well in advance to secure the best rates.
View the full calendar
Essential Travel Info for Las Vegas
Currency
USD
$ United States dollar
Language
English
Driving
Right side
Connect
Essentially all hotels offer in-room Wi-...
Safety
Moderate Safety
GPI: 2.44
Las Vegas Weather Forecast for September 18
"Warm & Sunny. Expect average highs of 33.6°C. 0% chance of rain."
What to Wear in Las Vegas in September
Based on historical data for September 18, Las Vegas typically experiences temperatures between 20.6°C and 33.6°C. We recommend packing t-shirt, light clothing, layers (onion system) to stay comfortable. Trends suggest it will stay mostly dry (0% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Las Vegas
Smart Suitcase
- T-Shirt
- Light Clothing
- Layers (Onion System)
Average High
33.6°C
Daytime Peak
Average Low
20.6°C
Nighttime Low
Feels Like
33.6°C
🔥 Feels accurate
Rain Chance
0%
Avg 0mm if it rains
Cloud Cover
9%
Clear sky
Pressure
1008.8 hPa
Low volatility
Las Vegas Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 97% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
05:00 - 09:30
16:00 - 17:00
Type I-II
🔴 17 min to burn
Type III-IV
🟡 26 min to burn
Type V-VI
🟢 43 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
8.2°C
Dry air
Heat Stress
Low
No heat warning
😕 Best outdoor time:
Early morning (6-9 AM) or evening (after 6 PM)
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in United States
Flight Traffic
High
92/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~676
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Las Vegas
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:26
☀️ Noon
11:36
🌇 Sunset
17:45
⏱️ Daylight
12h 18m
Wind Speed
14.1 km/h
Gentle breeze
Sunshine
11.0 hrs
Direct Sun (Cloud-free)
Humidity
21%
Dry air
Travel Intelligence
Exclusive flight analytics & health data for Las Vegas
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in Las Vegas
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Las Vegas on September 18 averages 33.6°C with a 0% precipitation probability. Wedding/Outdoor Event Score: 99/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Las Vegas Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
September 19
33.1°C • 0% rain
Score
100
September 20
32.8°C • 1% rain
Score
100
September 21
32.5°C • 1% rain
Score
100
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (September 18) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Las Vegas Worth Visiting on September 18?
Planning a trip to Las Vegas on September 18? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 33.6°C with a 0% historical precipitation risk.
✈️ Travel Logistics: Approximately 676 landing slots available daily during this period, indicating peak tourist activity.
📊 Historical Extremes: The hottest September 18 recorded in the last 30 years saw temperatures hit 39.4°C in 2020, while the coldest dropped to 16.6°C in 2019.