October 21 is statistically one of the best days of the year in Yellowknife. With minimal rain risk (5%) and pleasant highs of 1°C, it's ideal for outdoor adventures. You'll find plenty of company in Yellowknife this month as tourism activity remains quite robust.
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Essential Travel Info for Yellowknife
Currency
CAD
$ Canadian dollar
Language
English
+1 more
Driving
Right side
Safety
Very High Safety
GPI: 1.389
Yellowknife Weather Forecast for October 21
"Cold & Crisp. Expect average highs of 1°C. 5% chance of snow."
What to Wear in Yellowknife in October
Based on historical data for October 21, Yellowknife typically experiences temperatures between -2.5°C and 1°C. We recommend packing heavy coat, scarf, gloves to stay comfortable. Trends suggest it will stay mostly dry (5% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Yellowknife
Smart Suitcase
- Heavy Coat
- Scarf
- Gloves
Average High
1°C
Daytime Peak
Average Low
-2.5°C
Nighttime Low
Feels Like
-3.6°C
🥶 Slightly colder
Snow Chance
5%
Avg 0.4mm if it snows
Snowfall
0.3 cm
~5% chance
Pressure
1012.3 hPa
Medium volatility
Yellowknife 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 15 for extended outdoor time
Type I-II
🔴 133 min to burn
Type III-IV
🟡 200 min to burn
Type V-VI
🟢 333 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
-1.7°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 Canada
Flight Traffic
Busy
68/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~15
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Yellowknife
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
07:40
☀️ Noon
12:23
🌇 Sunset
17:05
⏱️ Daylight
9h 24m
Wind Speed
17.5 km/h
Gentle breeze
Sunshine
3.8 hrs
Direct Sun (Cloud-free)
Humidity
82%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Yellowknife
Smart Flight Estimator
Airport-to-Airport Logistics
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Add your home location in settings to see airport details.
Travel Health & Safety in Yellowknife
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.
Mild discomfort possible for arthritic conditions.
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, Yellowknife on October 21 averages 1°C with a 5% precipitation probability. Wedding/Outdoor Event Score: 24/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Yellowknife Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
October 14
3°C • 12% rain
Score
37
October 15
2.7°C • 14% rain
Score
33
October 18
1.7°C • 13% rain
Score
27
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (October 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Yellowknife Worth Visiting on October 21?
Planning a trip to Yellowknife on October 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 1°C with a 5% historical precipitation risk.
✈️ Travel Logistics: Approximately 15 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 6 vaccinations are recommended for Canada, including COVID-19.
📊 Historical Extremes: The hottest October 21 recorded in the last 30 years saw temperatures hit 5.6°C in 2021, while the coldest dropped to -7.7°C in 2024.