May 9 is generally a great time to visit Denver. While there is a slight chance of rain (27%), showers are usually brief. Expect comfortable 19°C weather. As it's peak season for Denver, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Denver
Currency
USD
$ United States dollar
Language
English
Driving
Right side
Safety
Moderate Safety
GPI: 2.44
Denver Weather Forecast for May 9
"Mild & Comfortable. Expect average highs of 18.6°C. 27% chance of snow."
What to Wear in Denver in May
Based on historical data for May 9, Denver typically experiences temperatures between 4.4°C and 18.6°C. We recommend packing light jacket, long pants, layers (onion system) to stay comfortable. With a 27% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Denver
Smart Suitcase
- Light Jacket
- Long Pants
- Layers (Onion System)
Average High
18.6°C
Daytime Peak
Average Low
4.4°C
Nighttime Low
Feels Like
18.6°C
🌤️ Feels accurate
Snow Chance
27%
Avg 2.6mm if it snows
Snowfall
0.3 cm
~27% chance
Pressure
1011.8 hPa
Medium volatility
Denver Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
~ Weather is generally predictable, but pack for minor variations. A light backup layer is recommended.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30+ required, seek shade
04:00 - 10:00
16:00 - 19:00
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
10.2°C
Pleasant
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
97/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~1,126
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Denver
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
04:52
☀️ Noon
11:57
🌇 Sunset
19:02
⏱️ Daylight
14h 10m
Wind Speed
16.3 km/h
Gentle breeze
Sunshine
10.9 hrs
Direct Sun (Cloud-free)
Humidity
58%
Comfortable
Travel Intelligence
Exclusive flight analytics & health data for Denver
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 Denver
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
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
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Denver on May 9 averages 18.6°C with a 27% precipitation probability. Wedding/Outdoor Event Score: 85/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Denver Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
May 15
21.2°C • 20% rain
Score
92
May 16
21.1°C • 23% rain
Score
92
May 14
20.6°C • 23% rain
Score
90
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (May 9) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Denver Worth Visiting on May 9?
Planning a trip to Denver on May 9? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 18.6°C with a 27% historical precipitation risk.
✈️ Travel Logistics: Approximately 1,126 landing slots available daily during this period, indicating peak tourist activity.
📊 Historical Extremes: The hottest May 9 recorded in the last 30 years saw temperatures hit 25.8°C in 2018, while the coldest dropped to 0.6°C in 2019.