April 21 is statistically one of the best days of the year in Las Vegas. With minimal rain risk (1%) and pleasant highs of 27°C, it's ideal for outdoor adventures. Las Vegas is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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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 April 21
"Warm & Sunny. Expect average highs of 26.8°C. 1% chance of rain."
What to Wear in Las Vegas in April
Based on historical data for April 21, Las Vegas typically experiences temperatures between 13.6°C and 26.8°C. We recommend packing t-shirt, light clothing, layers (onion system) to stay comfortable. Trends suggest it will stay mostly dry (1% 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
26.8°C
Daytime Peak
Average Low
13.6°C
Nighttime Low
Feels Like
26.8°C
☀️ Feels accurate
Rain Chance
1%
Avg 0mm if it rains
Cloud Cover
26%
Overcast
Pressure
1010.3 hPa
Medium 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 96% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30+ required, seek shade
05:00 - 10:00
16:00 - 18:00
Type I-II
🔴 13 min to burn
Type III-IV
🟡 20 min to burn
Type V-VI
🟢 33 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
2.6°C
Dry air
Heat Stress
Low
No heat warning
🙂 Best outdoor time:
Any time during daylight hours
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
~680
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Las Vegas
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:00
☀️ Noon
11:40
🌇 Sunset
18:20
⏱️ Daylight
13h 19m
Wind Speed
16 km/h
Gentle breeze
Sunshine
12.2 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
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Travel Health & Safety in Las Vegas
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰 Moderate
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
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 April 21 averages 26.8°C with a 1% precipitation probability. Wedding/Outdoor Event Score: 100/100."
— 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
Compare Other Cities
Same date (April 21) in other destinations
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📍 Is Las Vegas Worth Visiting on April 21?
Planning a trip to Las Vegas on April 21? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 26.8°C with a 1% historical precipitation risk.
✈️ Travel Logistics: Approximately 680 landing slots available daily during this period, indicating peak tourist activity.
📊 Historical Extremes: The hottest April 21 recorded in the last 30 years saw temperatures hit 33.9°C in 2024, while the coldest dropped to 12°C in 2023.