Portland, Oregon is known for its mild and rainy climate. The city experiences cool, wet winters and warm, dry summers. If you're planning a trip to Portland, it's important to be aware of the city's weather patterns so you can pack appropriately and plan your activities accordingly.
In this article, we'll provide an overview of Portland's monthly weather. We'll discuss the average temperatures, precipitation, and humidity levels for each month of the year. We'll also provide some tips on what to wear and what to do in Portland during each season.
Now that you have a general overview of Portland's weather, let's take a closer look at the climate data for each month of the year.
Portland, Oregon Monthly Weather
Mild and rainy climate.
- Cool, wet winters.
- Warm, dry summers.
- Average temperature: 50°F (10°C) to 70°F (21°C)
- Average precipitation: 36 inches (91 cm) per year
- Rainy season: October to April
- Driest months: July and August
- Foggy mornings common in summer
Best time to visit: Spring and fall for mild temperatures.
Cool, wet winters.
Portland's winters are characterized by cool temperatures and plenty of rain.
- Mild temperatures:
The average temperature in January, the coldest month, is 40°F (4°C). However, temperatures can drop below freezing at night, especially in the suburbs and outlying areas.
- Frequent rain:
Portland receives an average of 5 inches (13 cm) of rain in December, the wettest month. Rain is common throughout the winter months, so be sure to pack a raincoat or umbrella if you're visiting during this time.
- Occasional snow:
Snow is relatively rare in Portland, but it does happen occasionally. The city typically receives less than 10 inches (25 cm) of snow per year. However, snow can accumulate in the West Hills and other higher elevations.
- Foggy mornings:
Fog is common in Portland during the winter months, especially in the mornings. The fog typically burns off by midday, but it can linger for longer periods of time on overcast days.
Despite the cool and wet weather, Portland is still a great place to visit in the winter. The city offers a variety of indoor attractions, such as museums, art galleries, and theaters. There are also many opportunities for outdoor activities, such as hiking, biking, and skiing in the nearby mountains.
Warm, dry summers.
Portland's summers are characterized by warm temperatures and very little rain.
Sunny days:
The average temperature in July, the warmest month, is 77°F (25°C). However, temperatures can reach into the 90s (32°C) on occasion. The days are typically sunny and clear, with low humidity. This makes it ideal weather for outdoor activities.
Cool nights:
Even though the days are warm, the nights are typically cool and comfortable. The average low temperature in July is 55°F (13°C). This makes it perfect for sleeping or enjoying a campfire in the evening.
Low precipitation:
Portland receives an average of only 0.5 inches (1.3 cm) of rain in July, the driest month. This makes it a great time to visit the city if you're looking for sunny and dry weather.
Perfect for outdoor activities:
Portland's warm and dry summers are perfect for a variety of outdoor activities. You can enjoy hiking, biking, swimming, camping, and more. The city also hosts many outdoor festivals and events during the summer months.
Overall, Portland's summers are a great time to visit the city. The weather is warm and sunny, with low humidity and very little rain. This makes it ideal for a variety of outdoor activities.
Average temperature: 50°F (10°C) to 70°F (21°C)
Portland's average temperature ranges from 50°F (10°C) in January to 70°F (21°C) in July. This means that the city experiences mild temperatures year-round.
Spring:
Spring in Portland is a time of transition. The weather starts to warm up in March, and by April and May, the average temperature is in the mid-50s to low 60s (13-17°C). This is a great time to visit Portland if you're looking for mild temperatures and fewer crowds.
Summer:
Summer in Portland is warm and dry. The average temperature in July is 70°F (21°C), but it can reach into the 90s (32°C) on occasion. The days are typically sunny and clear, with low humidity. This makes it ideal weather for outdoor activities.
Fall:
Fall in Portland is a beautiful time of year. The leaves on the trees change color, and the weather is mild. The average temperature in October is 57°F (14°C), and it gradually cools down as the month progresses. This is a great time to visit Portland if you're looking for moderate temperatures and fewer crowds.
Overall, Portland's average temperature is mild year-round. This makes it a great city to visit no matter what time of year you choose to go.
Average precipitation: 36 inches (91 cm) per year
Portland receives an average of 36 inches (91 cm) of precipitation per year. This is more than the national average of 38 inches (97 cm). However, most of Portland's precipitation falls during the winter months, so the summers are typically dry.
Rainy season:
Portland's rainy season runs from October to April. During these months, the city receives an average of 4 to 7 inches (10-18 cm) of rain per month. The rain is typically light and steady, but there can be occasional heavy downpours.
Dry season:
Portland's dry season runs from May to September. During these months, the city receives an average of less than 1 inch (2.5 cm) of rain per month. The days are typically sunny and clear, with low humidity. This makes it ideal weather for outdoor activities.
Year-round precipitation:
Even though Portland has a rainy season and a dry season, the city experiences precipitation year-round. This is because the Pacific Ocean is a major source of moisture for the region. The prevailing winds from the west carry moisture from the ocean to the mountains of Oregon and Washington. As the air rises over the mountains, it cools and condenses, forming clouds and rain.
Overall, Portland's precipitation is moderate and evenly distributed throughout the year. This makes it a great city to visit no matter what time of year you choose to go.
Rainy season: October to April
Portland's rainy season runs from October to April. During these months, the city receives an average of 4 to 7 inches (10-18 cm) of rain per month. The rain is typically light and steady, but there can be occasional heavy downpours.
What to expect:
During the rainy season, you can expect to see rain on a regular basis. The rain is usually not heavy enough to cause flooding or major disruptions, but it can make it difficult to get around if you're not prepared. It's a good idea to pack a raincoat or umbrella if you're visiting Portland during this time of year.
Things to do:
Even though it rains a lot during the rainy season, there are still plenty of things to do in Portland. Many of the city's museums, art galleries, and theaters offer indoor activities. You can also visit one of Portland's many indoor shopping malls or enjoy a meal at one of the city's many restaurants.
Tips for staying dry:
If you're visiting Portland during the rainy season, there are a few things you can do to stay dry. First, make sure to pack a raincoat or umbrella. You can also wear waterproof shoes or boots. If you're planning on doing any outdoor activities, be sure to check the weather forecast before you go.
Overall, Portland's rainy season is not as bad as it may seem. The rain is typically light and steady, and there are still plenty of things to do in the city. Just be sure to pack a raincoat or umbrella and you'll be fine.
Driest months: July and August
Portland's driest months are July and August. During these months, the city receives an average of less than 1 inch (2.5 cm) of rain per month. The days are typically sunny and clear, with low humidity. This makes it ideal weather for outdoor activities.
- Sunny skies:
July and August are the sunniest months in Portland. The city receives an average of 10-12 hours of sunshine per day during these months.
- Warm temperatures:
The average temperature in July is 77°F (25°C), and the average temperature in August is 75°F (24°C). However, temperatures can reach into the 90s (32°C) on occasion.
- Low humidity:
The humidity is typically low in July and August, making it feel comfortable to be outdoors.
- Perfect for outdoor activities:
The dry and sunny weather in July and August is perfect for a variety of outdoor activities. You can enjoy hiking, biking, swimming, camping, and more.
Overall, July and August are great months to visit Portland. The weather is warm and sunny, with low humidity and very little rain. This makes it ideal for a variety of outdoor activities.
Foggy mornings common in summer
Foggy mornings are common in Portland during the summer months, especially in July and August. This is because of the city's unique geography and climate.
Geography:
Portland is located in a valley surrounded by mountains. The Columbia River also runs through the city. This creates a natural basin that traps cool air and moisture.
Climate:
Portland's climate is influenced by the Pacific Ocean. The prevailing winds from the west carry cool, moist air from the ocean to the mountains of Oregon and Washington. As the air rises over the mountains, it cools and condenses, forming clouds and fog.
Morning fog:
In the morning, the fog is often trapped in the valley by the surrounding mountains. This can create a thick fog that can reduce visibility to a few feet. The fog typically burns off by midday, but it can linger for longer periods of time on overcast days.
Foggy mornings can be a beautiful sight to see. However, they can also be a hazard for drivers. If you're visiting Portland during the summer months, be sure to allow extra time for your commute in case of fog.
FAQ
Here are some frequently asked questions about Portland, Oregon's monthly weather:
Question 1: What is the best time to visit Portland?
Answer 1: The best time to visit Portland is during the spring (April-May) or fall (September-October) when the weather is mild and dry. However, Portland is a great city to visit year-round, as each season offers its own unique charm.
Question 2: What is the weather like in Portland during the summer?
Answer 2: Portland's summers are warm and dry, with average temperatures in the mid-70s (24°C). However, temperatures can reach into the 90s (32°C) on occasion. The days are typically sunny and clear, with low humidity.
Question 3: What is the weather like in Portland during the winter?
Answer 3: Portland's winters are cool and wet, with average temperatures in the mid-40s (7°C). However, temperatures can drop below freezing at night, especially in the suburbs and outlying areas. Rain is common throughout the winter months, so be sure to pack a raincoat or umbrella if you're visiting during this time.
Question 4: How much rain does Portland get?
Answer 4: Portland receives an average of 36 inches (91 cm) of rain per year. This is more than the national average of 38 inches (97 cm). However, most of Portland's precipitation falls during the winter months, so the summers are typically dry.
Question 5: Is it ever foggy in Portland?
Answer 5: Yes, fog is common in Portland during the summer months, especially in the mornings. This is because of the city's unique geography and climate. The fog typically burns off by midday, but it can linger for longer periods of time on overcast days.
Question 6: What are some things to do in Portland during the rainy season?
Answer 6: Even though it rains a lot during the rainy season, there are still plenty of things to do in Portland. Many of the city's museums, art galleries, and theaters offer indoor activities. You can also visit one of Portland's many indoor shopping malls or enjoy a meal at one of the city's many restaurants.
Overall, Portland is a great city to visit year-round. The weather is mild and there are plenty of things to do, no matter what time of year you choose to go.
Now that you know more about Portland's monthly weather, here are some tips for planning your trip:
Tips
Here are some tips for planning your trip to Portland, Oregon, based on the weather:
Tip 1: Dress in layers.
Portland's weather can be unpredictable, so it's always a good idea to dress in layers. This way, you can adjust your clothing as needed throughout the day.
Tip 2: Pack a raincoat or umbrella.
Portland is known for its rainy weather, especially during the winter months. Be sure to pack a raincoat or umbrella if you're visiting during this time.
Tip 3: Check the weather forecast before you go.
Portland's weather can change quickly, so it's a good idea to check the weather forecast before you head out for the day. This way, you can be prepared for any changes in the weather.
Tip 4: Take advantage of the many indoor activities.
Even though Portland is known for its rainy weather, there are still plenty of indoor activities to enjoy. Many of the city's museums, art galleries, and theaters offer indoor activities. You can also visit one of Portland's many indoor shopping malls or enjoy a meal at one of the city's many restaurants.
Overall, Portland is a great city to visit year-round. Just be sure to pack appropriately for the weather and you'll be sure to have a great time.
No matter what time of year you visit Portland, you're sure to find something to enjoy. The city offers a variety of attractions and activities for visitors of all ages.
Conclusion
Portland, Oregon is a city with a mild and rainy climate. The city experiences cool, wet winters and warm, dry summers. The average temperature in Portland ranges from 50°F (10°C) in January to 70°F (21°C) in July. The city receives an average of 36 inches (91 cm) of precipitation per year, most of which falls during the winter months.
Despite the rain, Portland is a great city to visit year-round. The city offers a variety of attractions and activities for visitors of all ages. In the summer, you can enjoy hiking, biking, swimming, and camping. In the winter, you can visit one of Portland's many museums, art galleries, or theaters. And no matter what time of year you visit, you can always enjoy a delicious meal at one of Portland's many restaurants.
So, whether you're looking for a city with a mild climate, plenty of things to do, and delicious food, Portland is the perfect place for you.