November 21 sees frequent showers in Portland. Historical data shows a 53% chance of rain, so pack accordingly. Temperatures average 10°C. Portland is seeing high visitor numbers, so iconic spots may be busier than usual.
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Essential Travel Info for Portland
Currency
USD
$ United States dollar
Language
English
Driving
Right side
Safety
Moderate Safety
GPI: 2.44
Portland Weather Forecast for November 21
"Rainy & Overcast. Expect average highs of 10°C. 53% chance of snow."
What to Wear in Portland in November
Based on historical data for November 21, Portland typically experiences temperatures between 3.4°C and 10°C. We recommend packing heavy coat, scarf, gloves along with other layers to stay comfortable. With a 53% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Portland
Smart Suitcase
- Heavy Coat
- Scarf
- Gloves
- Umbrella
Average High
10°C
Daytime Peak
Average Low
3.4°C
Nighttime Low
Feels Like
7.9°C
❄️ Slightly colder
Snow Chance
53%
Avg 6.3mm if it snows
Snowfall
0.1 cm
~53% chance
Pressure
1018 hPa
High volatility
Portland 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 15 for extended outdoor time
Type I-II
🔴 267 min to burn
Type III-IV
🟡 401 min to burn
Type V-VI
🟢 668 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
7.6°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
Busy
64/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~209
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Portland
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
07:19
☀️ Noon
11:58
🌇 Sunset
16:36
⏱️ Daylight
9h 17m
Wind Speed
15.1 km/h
Gentle breeze
Sunshine
4.8 hrs
Direct Sun (Cloud-free)
Humidity
85%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Portland
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 Portland
Travel Comfort Index
Real-time tourism conditions
Weather Quality
🌧️ Variable
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 acceptable. Sensitive individuals should limit prolonged outdoor exertion.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
Volcanic Activity
Nearest: Mount St. Helens
84km away
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Portland on November 21 averages 10°C with a 53% precipitation probability. Wedding/Outdoor Event Score: 51/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Portland Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
November 14
11.7°C • 48% rain
Score
64
November 15
11.5°C • 45% rain
Score
64
November 16
11.3°C • 44% rain
Score
63
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (November 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Portland Worth Visiting on November 21?
Planning a trip to Portland on November 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 10°C with a 53% historical precipitation risk.
✈️ Travel Logistics: Approximately 209 landing slots available daily during this period, indicating manageable crowd levels.
📊 Historical Extremes: The hottest November 21 recorded in the last 30 years saw temperatures hit 12.4°C in 2023, while the coldest dropped to 0.7°C in 2022.