March 12 sees frequent showers in Portland. Historical data shows a 51% chance of rain, so pack accordingly. Temperatures average 12°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 March 12
"Rainy & Overcast. Expect average highs of 11.8°C. 51% chance of snow."
What to Wear in Portland in March
Based on historical data for March 12, Portland typically experiences temperatures between 3.3°C and 11.8°C. We recommend packing heavy coat, scarf, gloves along with other layers to stay comfortable. With a 51% 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
11.8°C
Daytime Peak
Average Low
3.3°C
Nighttime Low
Feels Like
10.9°C
🌤️ Feels accurate
Snow Chance
51%
Avg 4.5mm if it snows
Snowfall
0.1 cm
~51% chance
Pressure
1016.4 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 90% 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
🔴 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
8.8°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
06:30
☀️ Noon
12:21
🌇 Sunset
18:13
⏱️ Daylight
11h 43m
Wind Speed
13.3 km/h
Gentle breeze
Sunshine
6.5 hrs
Direct Sun (Cloud-free)
Humidity
82%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Portland
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 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 March 12 averages 11.8°C with a 51% precipitation probability. Wedding/Outdoor Event Score: 58/100."
— 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 19
12.8°C • 42% rain
Score
69
March 17
12.5°C • 40% rain
Score
68
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (March 12) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Portland Worth Visiting on March 12?
Planning a trip to Portland on March 12? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 11.8°C with a 51% historical precipitation risk.
✈️ Travel Logistics: Approximately 225 landing slots available daily during this period, indicating manageable crowd levels.
📊 Historical Extremes: The hottest March 12 recorded in the last 30 years saw temperatures hit 18.1°C in 2018, while the coldest dropped to -1.9°C in 2023.