Eugene Climate & Monthly Temperature Overview – United States

Spring (March-May)

Spring in Eugene arrives with a burst of color as wildflowers bloom in vibrant hues. Temperatures gradually rise from an average low of 40°F (4°C) in March to a balmy 55°F (13°C) by May. Rainfall is frequent, averaging around 4 inches (100 mm) per month, creating lush greenery and nourishing the surrounding forests. The skies are often cloudy, but sunny intervals provide respite from the showers.

Summer (June-August)

Summer brings warm and sunny days to Eugene. Temperatures peak in July, reaching an average high of 80°F (27°C). The humidity levels remain relatively low, making the heat more tolerable. Rainfall is less frequent during summer, averaging around 1 inch (25 mm) per month. The clear skies and warm nights create ideal conditions for enjoying outdoor activities such as hiking, biking, and camping.

Climate Overview

Eugene, located in the Willamette Valley of Oregon, United States, boasts a temperate climate characterized by mild, wet winters and warm, dry summers. The average annual temperature hovers around 52 degrees Fahrenheit (11 degrees Celsius), making Eugene a comfortable city to reside in throughout the year. January typically records the coldest temperatures, averaging around 40 degrees Fahrenheit (4 degrees Celsius), while July and August are the warmest months, with average temperatures soaring to around 65 degrees Fahrenheit (18 degrees Celsius).

Seasonal Variability

Eugene’s climate exhibits distinct seasonal variations. Winter months bring moderate rainfall and occasional snowfall, which tends to accumulate only on higher elevations. Spring welcomes warmer temperatures and increased sunshine, providing an ideal time for outdoor activities. Summer brings warm, clear skies and low humidity, creating a pleasant atmosphere suitable for recreational pursuits such as swimming, hiking, and camping. As autumn approaches, temperatures gradually cool down, and the region experiences increased rainfall, preparing for the upcoming winter season.

Cloud Cover

Eugene, Oregon experiences a wide range of cloud cover throughout the year. During the winter months, the city is often covered in low-level clouds, leading to frequent drizzle or light rain. As the seasons change, the cloud cover tends to decrease in the spring and early summer. However, the arrival of fall and winter brings a return of clouds, with high-level cirrus clouds becoming more prevalent.

Cloud Types

Eugene experiences a variety of cloud types, with the most common being cumulus, cirrus, and stratus clouds. Cumulus clouds are puffy, white clouds that typically form at low altitudes. Cirrus clouds are high-altitude clouds that appear as thin, wispy streaks. Stratus clouds are low clouds that form a uniform, gray layer. Other cloud types, such as altocumulus and nimbostratus, can also be seen in Eugene, although they are less common.

Precipitation Patterns and Variability

Eugene, located in the Pacific Northwest region of the United States, experiences a temperate maritime climate characterized by abundant precipitation. The average annual precipitation in Eugene is approximately 45 inches (114 cm), spread fairly evenly throughout the year. However, seasonal variations do occur, with fall and winter months typically receiving the most rainfall. During these months, the frequent passage of low-pressure systems and atmospheric rivers from the Pacific Ocean bring prolonged periods of drizzle and rain, often accompanied by strong winds. Conversely, summer months tend to be drier, with clear skies and occasional thunderstorms.

Factors Influencing Precipitation

Several factors contribute to Eugene’s precipitation patterns. The city’s proximity to the Pacific Ocean is a major influence as prevailing westerly winds carry moisture-laden air from the ocean towards the coast. As this air encounters the Cascade Mountains to the east, it is forced to rise, causing adiabatic cooling and the release of precipitation. Additionally, Eugene is located along the convergence zone of two distinct air masses: dry, cold air from the north and moist, warm air from the south. This collision of air masses creates unstable atmospheric conditions that favor the formation of precipitation. The presence of low-pressure systems and frontal boundaries passing through the region further enhances the likelihood of rainfall.

Rainfall Patterns

Eugene, Oregon experiences a temperate climate with abundant rainfall throughout the year. The city receives an average of 44.5 inches (113 centimeters) of precipitation annually, with the rainy season typically lasting from October to April. During this period, the city can experience prolonged stretches of wet weather, with occasional heavy downpours. The months of November and December generally see the highest rainfall, averaging over 7 inches (18 centimeters) each.

Seasonal Variations

Summer months in Eugene are relatively dry, with less than 2 inches (5 centimeters) of precipitation per month. The months of July and August typically receive the least amount of rainfall, with an average of 0.5 inches (1 centimeter) each. However, even during the dry season, the city can experience occasional thunderstorms or periods of drizzle. The wet season brings with it increased cloud cover and lower temperatures, while the summer months provide more sunshine and warmer conditions.

Annual Snowfall in Eugene

Eugene, Oregon, located in the Willamette Valley, typically experiences mild winters with average snowfall accumulating to only a few inches per year. The city’s proximity to the Pacific Ocean results in moderate temperatures, with December and January averaging highs around 45 degrees Fahrenheit and lows around 35 degrees Fahrenheit. Snowfall is infrequent, with the average annual total hovering around 2.5 inches.

Notable Snowfall Events

Despite its relatively low average snowfall, Eugene has witnessed occasional significant snowstorms. One of the most notable occurred in 1955, when the city received 12 inches of snow. This event brought the city to a standstill, interrupting transportation and causing power outages. Another notable snowfall occurred in December 2016, when Eugene recorded 6.5 inches of snow, the most significant accumulation in over a decade. While such events are rare, they serve as reminders of Eugene’s vulnerability to occasional winter snowstorms.

Climate and Sunshine Hours

Eugene, United States, experiences a temperate oceanic climate characterized by mild, wet winters and warm, dry summers. The city receives abundant precipitation throughout the year, with an average of over 40 inches annually. However, Eugene is also known for its high sunshine hours, particularly during the summer months. On average, the city enjoys approximately 2,900 sunshine hours per year, which is higher than most other coastal cities in the Pacific Northwest. This ample sunshine contributes to Eugene’s reputation as a livable and desirable place to reside.

Seasonal Variations

The seasonal distribution of sunshine hours in Eugene varies significantly. During the winter months (December to February), the city receives an average of only 3 to 4 hours of sunshine per day. This is due to the frequent presence of clouds and storms that often bring rain or snow. However, as spring arrives (March to May), the weather improves, and sunshine hours gradually increase. By summer (June to August), Eugene experiences its peak sunshine duration, with an average of over 8 hours of sunshine per day. These long, sunny days provide ample opportunities for outdoor activities and recreational pursuits.

Moonrise and Moonset Times

The moonrise and moonset times in Eugene, United States, vary throughout the month and the year. The exact times can be found on a variety of websites and apps, including Time and Date and the US Naval Observatory. Generally speaking, the moon rises in the east and sets in the west, and the times vary depending on the phase of the moon. During a full moon, the moon is visible all night, while during a new moon, the moon is not visible at all.

Moon Phases

The moon goes through a cycle of phases as it orbits the Earth. The phases of the moon are determined by the amount of the moon that is lit by the sun. The moon’s phases are as follows:

  • New Moon: The moon is not visible because it is between the Earth and the sun.
  • Waxing Crescent Moon: The moon is visible as a thin sliver in the evening sky.
  • First Quarter Moon: The moon is half-lit and appears as a half-circle in the sky.
  • Waxing Gibbous Moon: The moon is more than half-lit and appears as a more than half-circle in the sky.
  • Full Moon: The moon is fully lit and appears as a complete circle in the sky.
  • Waning Gibbous Moon: The moon is less than fully lit and appears as a less than half-circle in the sky.
  • Third Quarter Moon: The moon is half-lit and appears as a half-circle in the sky.
  • Waning Crescent Moon: The moon is visible as a thin sliver in the morning sky.

Climate of Eugene and its Impact on Humidity

Eugene, Oregon, experiences a temperate oceanic climate, characterized by mild, wet winters and warm, dry summers. The average annual relative humidity in Eugene is around 75%, with higher levels during the winter months (80-90%) and lower levels during the summer months (50-60%). The relative humidity is influenced by several factors, including precipitation, temperature, and wind patterns. During the winter months, frequent rainfall contributes to high humidity, while during the summer months, the warm, dry easterly winds from the Columbia River Gorge reduce humidity levels.

Humidity Trends and Variation

Eugene’s humidity levels exhibit some seasonal trends. During the spring and fall months, humidity levels are generally moderate, ranging from 60-75%. As the weather warms in the summer, humidity levels decrease, often reaching their lowest point in July and August. This dryness is due to the influence of warm easterly winds, which descend from the Cascade Mountains and absorb moisture from the air. Conversely, during the winter months, cold, moist air from the Pacific Ocean increases humidity levels, leading to frequent precipitation and a damp, foggy atmosphere.

Wind Patterns and Speed

Eugene, located in the Willamette Valley of Oregon, experiences a generally temperate climate with moderate wind speeds. The prevailing wind direction is westerly, bringing in moist air from the Pacific Ocean. During the winter months, strong easterly winds known as “Gap Winds” can occasionally occur when air flows through the Columbia River Gorge and Cascade Mountains. These winds can gust up to 50 mph and can cause localized damage.

Seasonal Variations

Wind speeds in Eugene vary throughout the year. During the summer months, winds are typically calm and gentle, with average speeds ranging from 5 to 10 mph. As fall approaches, wind speeds increase slightly, reaching an average of 12 to 15 mph. During the winter months, wind speeds can be higher, with gusts up to 25 mph or more. In the spring, wind speeds gradually decrease as the weather becomes warmer and more settled. Overall, Eugene has a relatively low wind speed compared to other cities in the Pacific Northwest.

Spring (March-May):

Spring in Eugene brings a burst of vibrant colors as flowers and trees bloom, transforming the city into a picturesque landscape. The weather is generally mild, with temperatures ranging from the mid-40s to mid-60s Fahrenheit. This makes it ideal for outdoor activities such as hiking, biking, and strolling through the lush parks. The annual Festival of the Arts & Crafts in May showcases local and regional artists, providing a delightful opportunity to appreciate the region’s creativity.

Summer (June-August):

Summer in Eugene is characterized by warm, sunny weather, with temperatures averaging between the mid-60s and high 70s Fahrenheit. The sky is often clear, offering ample sunshine for outdoor activities. The Willamette River provides a scenic backdrop for riverfront strolls and paddling. Summer also brings a variety of festivals, including the Oregon Country Fair, a quirky and eclectic event celebrating art, music, and culture with a touch of whimsy.

Solar Energy Potential

Eugene, Oregon is located in the Pacific Northwest, which receives an abundance of rainfall and limited sunshine. Despite this, solar energy is still a viable option for residents and businesses in Eugene. According to the National Renewable Energy Laboratory, Eugene has an average of 4.5 peak sunlight hours per day. This is slightly lower than the national average of 5 peak sunlight hours per day, but it is still enough to generate significant amounts of electricity from solar panels.

Solar Energy Incentives and Support

The City of Eugene offers a number of incentives to encourage the adoption of solar energy. These incentives include rebates, tax credits, and streamlined permitting processes. In addition, Eugene is home to a number of solar installers who can help residents and businesses design and install solar systems. With the combination of government incentives and local support, solar energy is an increasingly attractive option for Eugene residents and businesses.

Rivers and Wetlands

Eugene is situated at the confluence of the Willamette and McKenzie Rivers, both of which play a significant role in shaping the city’s topography. The Willamette River, a major waterway in the Pacific Northwest, flows northward through Eugene, dividing the city into east and west sides. The McKenzie River, a scenic tributary, joins the Willamette in the city’s southern reaches. These rivers and their associated floodplains create a diverse wetland ecosystem, supporting rich plant and animal life. The Willamette River Valley, in particular, is a fertile floodplain that has been extensively developed for agriculture.

Hills and Ridges

Eugene is also characterized by its rolling hills and ridges, which rise gently from the river valleys. The ridgelines run roughly parallel to the Willamette River, providing panoramic views of the city and surrounding countryside. The most prominent ridge is Skinner Butte, a volcanic remnant with a distinctive conical shape that rises over 600 feet above the river. Other notable hills include Spencer’s Butte, Beltline Road Ridge, and Mount Pisgah, each offering their own unique vantage points. These hills and ridges not only contribute to the city’s scenic beauty but also serve as recreational destinations for hiking, biking, and birdwatching enthusiasts.

Eugene Airport (EUG)

Eugene Airport, also known as Mahlon Sweet Field, is the primary airport serving Eugene, Oregon, and the surrounding area. It is located approximately 7 miles (11 kilometers) northwest of downtown Eugene and offers both domestic and international flights. EUG is a medium-sized airport with two main terminals and over a dozen gates. The airport is served by several major airlines, including Alaska Airlines, Delta Air Lines, United Airlines, and Southwest Airlines. EUG offers direct flights to major cities such as Seattle, San Francisco, Los Angeles, and Denver, as well as seasonal flights to other destinations. The airport also has a variety of food and retail options, including restaurants, bars, and shops.

Other Nearby Airports

In addition to Eugene Airport, there are several other airports within a short driving distance of Eugene. These airports offer a wider range of flight options, particularly for international destinations.

  • Portland International Airport (PDX): Located approximately 110 miles (177 kilometers) north of Eugene, PDX is the largest airport in Oregon and offers a wide variety of domestic and international flights.
  • Seattle-Tacoma International Airport (SEA): Located approximately 270 miles (435 kilometers) north of Eugene, SEA is a major international airport with flights to destinations around the world.
  • San Francisco International Airport (SFO): Located approximately 380 miles (611 kilometers) south of Eugene, SFO is another major international airport with a wide range of flight options.

About the City of Eugene

Eugene, a vibrant city nestled in the heart of the Willamette Valley in Oregon, boasts a harmonious blend of natural beauty and urban amenities. Surrounded by lush greenery and the meandering Willamette River, Eugene offers residents and visitors alike an idyllic setting for outdoor recreation, art, and culture. The city is renowned for its renowned university, the University of Oregon, which brings a youthful and vibrant atmosphere to the city’s core. With its charming downtown area, eclectic dining scene, and thriving arts community, Eugene offers a unique and captivating experience for those seeking a balance between urban living and nature’s embrace.

Key Features and Attractions

Eugene is a city that truly embraces the outdoors. Hendricks Park, with its breathtaking Japanese garden, Victorian rose garden, and scenic hiking trails, is a popular destination for locals and tourists alike. The Mount Pisgah Arboretum, perched atop a hill overlooking the city, offers a serene escape with its diverse flora and fauna. Additionally, Eugene is home to a number of parks and trails along the Willamette River, providing ample opportunities for kayaking, paddleboarding, and fishing. The city’s vibrant arts scene is reflected in its numerous museums, including the Jordan Schnitzer Museum of Art, the University of Oregon Museum of Natural and Cultural History, and the World of Speed Motorsports Museum. The Hult Center for the Performing Arts hosts a variety of performances, from Broadway shows to symphony concerts, catering to diverse cultural tastes. With its charming atmosphere, natural beauty, and cultural offerings, Eugene captivates hearts and invites visitors to immerse themselves in its unique Pacific Northwest character.