30YearWeather
Portland in March
Portland weather in March - United States
🌧️Wet Season

Portland Weather in March

Plan your March trip to Portland, United States. Based on 30 years of NASA data, expect temperatures of 12°C (high) to 3°C (low), with 48% rain probability and 8 hours of daily sunshine. Pack rain gear for around 31 rainy days.

Avg High
12°C

Hottest around day 31

Avg Low
3°C

Coolest around day 6

Rainy Days
31days

48% avg rain chance

Sunshine
8hrs/day

Spring season

Portland March Weather Calendar

Click any day to see detailed weather information

Day 1
rain
Rainy
10°C48%
Day 2
rain
Rainy
10°C47%
Day 3
rain
Rainy
10°C46%
Day 4
rain
Rainy
10°C43%
Day 5
cloudy
Cloudy
10°C40%
Day 6
rain
Rainy
10°C43%
Day 7
rain
Rainy
11°C44%
Day 8
rain
Rainy
11°C43%
Day 9
rain
Rainy
11°C44%
Day 10
rain
Rainy
12°C49%
Day 11
rain
Rainy
12°C48%
Day 12
rain
Rainy
12°C51%
Day 13
rain
Rainy
12°C53%
Day 14
rain
Rainy
12°C53%
Day 15
rain
Rainy
12°C47%
Day 16
rain
Rainy
12°C42%
Day 17
cloudy
Cloudy
13°C40%
Day 18
cloudy
Cloudy
13°C39%
Day 19
rain
Rainy
13°C42%
Day 20
rain
Rainy
13°C45%
Day 21
rain
Rainy
13°C51%
Day 22
rain
Rainy
13°C53%
Day 23
rain
Rainy
13°C54%
Day 24
rain
Rainy
13°C57%
Day 25
rain
Rainy
13°C56%
Day 26
rain
Rainy
13°C59%
Day 27
rain
Rainy
13°C54%
Day 28
rain
Rainy
13°C53%
Day 29
rain
Rainy
13°C49%
Day 30
rain
Rainy
13°C49%
Day 31
rain
Rainy
13°C44%

Essential Travel Info for Portland

🗓️ Best Time to Visit📖 Travel Guide🍴 Food Guide

Currency

USD

$ United States dollar

Language

English

Driving

Right side

Safety

Moderate Safety

GPI: 2.44

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.

Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Well Connected
62/ 100
Traffic Index

Popular destination

Peak Daily Arrivals

0

slots per day

Peak

Aug

Low

Jan

Monthly Traffic Distribution

203
Jan
204
Feb
225
Mar
256
Apr
287
May
297
Jun
324
Jul
326
Aug
305
Sep
275
Oct
209
Nov
253
Dec
Traffic Level
Low Season

Key Connections

Seattle Tacoma (SEA)
Los Angeles (LAX)
Denver (DEN)
Phoenix Sky Harbor (PHX)
San Francisco (SFO)

Health & Safety Advisory

CDC travel health recommendations

No Requirements

No Special Vaccinations Required

Standard travel precautions apply

Source: CDC Travelers' Health

View Complete Health Guide

Is March a Good Time to Visit Portland?

👌A reasonable choice for your trip
Short Answer

Monsoon conditions shape Portland's March: expect 48% daily rain chance. Mornings often clear before afternoon showers - early starts recommended.

Decision Factors

Very high humidity

81% average humidity

Frequent rainfall expected

48% chance of rain - pack waterproofs

Near active volcano: Mount St. Helens

Medium volcanic risk

Shoulder season - balanced conditions

69% of peak - good value with moderate crowds

Good For

  • 🏛️
    Cultural tourists

    Comfortable conditions for exploring museums and sites

  • 💼
    Business travelers

    Climate-controlled meetings unaffected by weather

Who Should Avoid

  • 👴
    Elderly travelers

    81% humidity creates difficult conditions

Related Guides

Best Time to VisitWhen to AvoidPortland Overview
930 observations30-year historical data
Confidence: 95%

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Portland in March averages 12°C with 48% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Portland in March

What are the temperatures in Portland in March?

Daytime highs average 12°C, nights drop to 3°C. Temperatures remain fairly consistent.

How many rainy days in Portland in March?

Expect around 31 days with measurable rainfall. An umbrella is advisable.

What to wear in Portland in March?

Layers are key. A medium-weight jacket and closed-toe shoes.

Is March peak season in Portland?

This is off-peak season. Expect lower prices and fewer crowds.