July 4 is statistically one of the best days of the year in Portland. With minimal rain risk (5%) and pleasant highs of 26°C, it's ideal for outdoor adventures. Expect a bustling atmosphere in Portland right now—this is when the city truly comes alive with visitors. Note: July 4 is Independence Day in Portland, so expect special events, closures, and festive atmosphere.
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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 July 4
"Warm & Sunny. Expect average highs of 25.8°C. 5% chance of rain."
What to Wear in Portland in July
Based on historical data for July 4, Portland typically experiences temperatures between 13.2°C and 25.8°C. We recommend packing t-shirt, light clothing, layers (onion system) 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 Portland
Smart Suitcase
- T-Shirt
- Light Clothing
- Layers (Onion System)
Average High
25.8°C
Daytime Peak
Average Low
13.2°C
Nighttime Low
Feels Like
26.4°C
☀️ Feels accurate
Rain Chance
5%
Avg 0.1mm if it rains
Cloud Cover
43%
Overcast
Pressure
1017.1 hPa
Low volatility
Portland Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 81% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
04:00 - 10:00
16:00 - 20:00
Type I-II
🔴 15 min to burn
Type III-IV
🟡 23 min to burn
Type V-VI
🟢 38 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
17.7°C
Noticeable
Heat Stress
Low
No heat warning
😊 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Holiday
Independence Day
Flight Traffic
High
99/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~324
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Portland
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
04:28
☀️ Noon
12:16
🌇 Sunset
20:03
⏱️ Daylight
15h 34m
Wind Speed
12.3 km/h
Gentle breeze
Sunshine
12.5 hrs
Direct Sun (Cloud-free)
Humidity
61%
Slightly humid
Travel Intelligence
Exclusive flight analytics & health data for Portland
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Portland
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🔴 Very Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
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 July 4 averages 25.8°C with a 5% precipitation probability. Wedding/Outdoor Event Score: 100/100."
— 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
Compare Other Cities
Same date (July 4) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Portland Worth Visiting on July 4?
Planning a trip to Portland on July 4? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 25.8°C with a 5% historical precipitation risk.
🎉 Local Event: The date coincides with Independence Day, which may influence local business hours and event availability.
✈️ Travel Logistics: Approximately 324 landing slots available daily during this period, indicating manageable crowd levels.
📊 Historical Extremes: The hottest July 4 recorded in the last 30 years saw temperatures hit 34.5°C in 2023, while the coldest dropped to 11.3°C in 2022.