January 21 is generally a great time to visit Aspen. While there is a slight chance of rain (21%), showers are usually brief. Expect comfortable -1°C weather. It's a quieter period for Aspen, ideal for those who prefer unhurried sightseeing.
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Essential Travel Info for Aspen
Currency
USD
$ United States dollar
Language
English
Driving
Right side
Safety
Moderate Safety
GPI: 2.44
Aspen Weather Forecast for January 21
"Cold & Crisp. Expect average highs of -0.6°C. 21% chance of snow."
What to Wear in Aspen in January
Based on historical data for January 21, Aspen typically experiences temperatures between -12.9°C and -0.6°C. We recommend packing heavy coat, scarf, gloves along with other layers to stay comfortable. Trends suggest it will stay mostly dry (21% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Aspen
Smart Suitcase
- Heavy Coat
- Scarf
- Gloves
- Layers (Onion System)
Average High
-0.6°C
Daytime Peak
Average Low
-12.9°C
Nighttime Low
Feels Like
-3.8°C
🥶 Slightly colder
Snow Chance
21%
Avg 1.3mm if it snows
Snowfall
1.3 cm
~21% chance
Pressure
1021.3 hPa
High volatility
Aspen 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 15 for extended outdoor time
Type I-II
🔴 160 min to burn
Type III-IV
🟡 240 min to burn
Type V-VI
🟢 400 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
-5.4°C
Dry air
Heat Stress
Low
No heat warning
😕 Best outdoor time:
Midday (11 AM - 3 PM) when warmest
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in United States
Flight Traffic
Quiet
39/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~33
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Aspen
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
07:23
☀️ Noon
12:19
🌇 Sunset
17:15
⏱️ Daylight
9h 52m
Wind Speed
9.1 km/h
Light breeze
Sunshine
7.5 hrs
Direct Sun (Cloud-free)
Humidity
70%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Aspen
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 Aspen
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟢 Moderate
Price Level
💰💰 Moderate
Health & Wellbeing
Meteo-Health Forecast
Rapid pressure changes detected. High risk for meteosensitive people.
Weather unlikely to affect joint pain.
Fish are active due to pressure changes.
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, Aspen on January 21 averages -0.6°C with a 21% precipitation probability. Wedding/Outdoor Event Score: 1/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Aspen Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
January 27
0°C • 23% rain
Score
4
January 28
0.2°C • 23% rain
Score
4
January 15
-0.4°C • 21% rain
Score
3
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (January 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Aspen Worth Visiting on January 21?
Planning a trip to Aspen on January 21? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging -0.6°C with a 21% historical precipitation risk.
✈️ Travel Logistics: Approximately 33 landing slots available daily during this period, indicating manageable crowd levels.
📊 Historical Extremes: The hottest January 21 recorded in the last 30 years saw temperatures hit 2.2°C in 2024, while the coldest dropped to -30.6°C in 2025.