March 25 sees frequent showers in Portland. Historical data shows a 56% chance of rain, so pack accordingly. Temperatures average 13°C. You'll find plenty of company in Portland this month as tourism activity remains quite robust.
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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 March 25
"Rainy & Overcast. Expect average highs of 12.7°C. 56% chance of snow."
What to Wear in Portland in March
Based on historical data for March 25, Portland typically experiences temperatures between 3.9°C and 12.7°C. We recommend packing heavy coat, scarf, gloves along with other layers to stay comfortable. With a 56% 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
12.7°C
Daytime Peak
Average Low
3.9°C
Nighttime Low
Feels Like
12.1°C
🌤️ Feels accurate
Snow Chance
56%
Avg 4mm if it snows
Snowfall
0.1 cm
~56% chance
Pressure
1016.9 hPa
Medium volatility
Portland 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
🔴 42 min to burn
Type III-IV
🟡 63 min to burn
Type V-VI
🟢 105 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
9.9°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
69/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~225
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Portland
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:05
☀️ Noon
12:17
🌇 Sunset
18:30
⏱️ Daylight
12h 24m
Wind Speed
13.5 km/h
Gentle breeze
Sunshine
7.0 hrs
Direct Sun (Cloud-free)
Humidity
83%
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
Moderate fluctuations. Some sensitivity possible.
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 March 25 averages 12.7°C with a 56% precipitation probability. Wedding/Outdoor Event Score: 60/100."
— 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
March 18
12.8°C • 39% rain
Score
70
March 31
13.1°C • 44% rain
Score
70
March 19
12.8°C • 42% rain
Score
69
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (March 25) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Portland Worth Visiting on March 25?
Planning a trip to Portland on March 25? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 12.7°C with a 56% historical precipitation risk.
✈️ Travel Logistics: Approximately 225 landing slots available daily during this period, indicating manageable crowd levels.
📊 Historical Extremes: The hottest March 25 recorded in the last 30 years saw temperatures hit 23.4°C in 2025, while the coldest dropped to 0.7°C in 2023.