Gresham Climate & Monthly Temperature Overview – United States

Summer

Gresham experiences a warm summer season that typically lasts from late June to early September. During this time, temperatures range from an average low of 59°F (15°C) to an average high of 85°F (29°C). The humidity is relatively low, making the heat more bearable. July and August are the warmest months of the year, with average high temperatures hovering around 86°F (30°C). Although thunderstorms can occur occasionally, the summer months are generally dry.

Winter

Winter in Gresham lasts from late November to early March. Temperatures during this time are generally cold, with an average low of 36°F (2°C) and an average high of 47°F (8°C). Snowfall is common, with an average of 5 inches (13 cm) per year. The coldest months are December and January, with average low temperatures falling below freezing, around 33°F (1°C). Frost and ice are also common occurrences during the winter months. Precipitation levels are generally higher in the winter, with rain or snow falling an average of 10 days per month.

Summer Temperatures

Gresham’s summer months, from June to September, are characterized by warm, sunny days and pleasant nights. Average high temperatures during this period range from 75 to 85 degrees Fahrenheit (24 to 29 degrees Celsius), making it ideal for outdoor activities. The humidity levels are relatively low, with an average humidity of 60%, creating a comfortable environment. However, occasional heat waves can bring temperatures into the 90s or even 100s Fahrenheit (32-38 degrees Celsius).

Winter Temperatures

In contrast to the warm summers, Gresham’s winter months, from December to February, are chilly and wet. Average low temperatures during this period range from 32 to 40 degrees Fahrenheit (0 to 4 degrees Celsius), with frequent frosts and occasional snowfall. The city receives an average of 22 inches (56 centimeters) of rain and 10 inches (25 centimeters) of snow per year, making for a damp and dreary season. Nighttime temperatures often dip below freezing, with an average low of 28 degrees Fahrenheit (-2 degrees Celsius).

Cloud Cover and Types in Gresham, United States

Gresham, Oregon experiences a wide variety of cloud formations throughout the year. The most common type of cloud in Gresham is the cumulus cloud, which is characterized by its puffy, white appearance. Cumulus clouds are often associated with fair weather, but they can also produce light showers. Another common type of cloud in Gresham is the stratus cloud. Stratus clouds are flat, gray clouds that cover the entire sky. They often produce drizzle or light rain. In addition to these common types of clouds, Gresham also experiences cirrus clouds, altocumulus clouds, and nimbus clouds.

Cloud Patterns and Weather Forecasting in Gresham

The patterns of clouds in Gresham can provide valuable information about the upcoming weather. For example, if cirrus clouds are moving in from the west, it is likely that a storm is approaching. If altocumulus clouds are forming, it is likely that rain or snow is on the way. And if nimbus clouds are present, it is likely that rain or snow is already falling. By observing the cloud patterns in Gresham, residents can get a good idea of what the weather will be like in the coming hours or days.

Monthly Precipitation Trends

Gresham, Oregon, experiences significant precipitation throughout the year, with the wettest months being November through April. During these months, rainfall averages between 4.5 and 6.5 inches per month. The driest months are July and August, with average precipitation dropping to around 1.5 inches per month.

Seasonal Precipitation Variations

Spring and fall are transitional seasons in Gresham, with precipitation gradually increasing in spring and decreasing in fall. In spring, rainfall typically increases from March to May, reaching its peak in April. Conversely, in fall, precipitation declines from September to November. The transition between seasons is marked by moderate precipitation levels, ranging from 3 to 4 inches per month.

Summer is typically the driest season in Gresham, with relatively low precipitation. However, even during the summer months, occasional thunderstorms can bring heavy rainfall for short periods. Winter precipitation is characterized by a mix of rain and snow, with snowfall occurring mostly in the higher elevations surrounding the city. Precipitation during the winter months is generally consistent, ranging from 4 to 5 inches per month.

Historical Rainfall Patterns

Gresham, located in the Pacific Northwest, experiences a temperate climate with year-round precipitation. The city’s rainfall is characterized by wet winters and relatively dry summers. Annual precipitation averages around 45 inches, with the majority falling between October and April. During these months, the region is influenced by the North Pacific storm track, bringing frequent rain-bearing systems. Summer months, on the other hand, tend to be drier with occasional showers.

Seasonal Variability and Climate Change

The seasonal variability in rainfall in Gresham is evident in the monthly precipitation pattern. January is typically the wettest month, receiving an average of 7 inches of rain, while July and August are the driest, with around 2 inches each. Climate change is projected to affect rainfall patterns in Gresham, with models suggesting an increase in the frequency and intensity of extreme precipitation events, such as heavy downpours and floods. This could pose challenges for infrastructure, water management, and flood risk mitigation efforts in the future.

Historical Snowfall Data

Gresham, Oregon has experienced varying snowfall amounts throughout its history. In recent years, snowfall has been relatively minimal, with the city only receiving a few inches of snow on average per year. In the winter of 2021-2022, Gresham saw a total of 2.5 inches of snowfall. Historically, however, there have been more significant snowfall events in the city. In 1989, Gresham received 14 inches of snow in a single day, setting a record for the city.

Factors Affecting Snowfall

The amount of snowfall in Gresham is influenced by several factors, including elevation, proximity to the ocean, and storm patterns. Gresham is located at a relatively low elevation, only 100 feet above sea level. This means that the city is not as likely to receive snow as areas that are at higher elevations. The city’s proximity to the ocean also plays a role in snowfall. The Pacific Ocean acts as a moderating influence on the climate of Gresham, making it less likely for the city to experience extreme cold or snowfall. Storm patterns also impact snowfall in Gresham. When the jet stream is positioned correctly, the city can be hit by storms that produce heavy snowfall. However, when the jet stream is positioned differently, Gresham is more likely to experience mild winters with little snowfall.

Sunrise and Sunset Times

In Gresham, United States, the time of sunrise and sunset varies throughout the year due to the Earth’s tilt and rotation. During the summer months, typically from late June to late September, sunrise occurs around 5:30 AM and sunset around 8:30 PM. In the winter months, typically from late December to late March, sunrise occurs around 7:30 AM and sunset around 5:30 PM. These times may vary slightly depending on the exact day and location within Gresham.

Sunlight Hours

The number of sunlight hours per day also varies in Gresham throughout the year. During the summer months, Gresham experiences long days with up to 15 hours of sunlight. In the winter months, the days are shorter with only about 9 hours of sunlight. The average number of sunlight hours per year in Gresham is about 12 hours. This moderate amount of sunlight ensures that residents can enjoy outdoor activities year-round, while also having ample opportunities for indoor and evening activities. Gresham’s pleasant climate, with its balance of sunshine and moderate temperatures, makes it an attractive place to live and visit.

Sunrise and Sunset

The Moon’s position in Gresham, United States, varies throughout the month and year, affecting its rise and set times. During the new moon phase, when the Moon is not visible from Earth, it typically rises and sets close to the Sun. As the Moon progresses through its phases, its rise and set times gradually change. During the full moon phase, when the Moon is fully illuminated, it typically rises around sunset and sets around sunrise. The specific rise and set times for the Moon in Gresham can be found in local calendars or astronomical apps.

Moon Phases

The Moon goes through a cycle of phases over a period of approximately 29.5 days. In Gresham, United States, the Moon’s phases are visible in the night sky, providing a captivating celestial display. The new moon phase occurs when the Moon is not visible from Earth, as it is in between the Earth and the Sun. As the Moon progresses through its waxing phases, it appears to increase in size and brightness, gradually transitioning from a crescent moon to a gibbous moon. The full moon phase represents the stage when the entire face of the Moon is illuminated by sunlight, creating a bright and mesmerizing spectacle in the night sky. Over the next two weeks, the Moon enters its waning phases, gradually decreasing in size and brightness, moving from a gibbous moon to a crescent moon before returning to the new moon phase.

Factors Influencing Humidity in Gresham

Humidity in Gresham, located in the Pacific Northwest region of the United States, is influenced by several factors. Proximity to the Pacific Ocean plays a significant role. As air from the ocean moves inland, it carries moisture, leading to generally high relative humidity levels. The local topography also contributes, with the Cascade Mountains to the east acting as a barrier that prevents drier air from reaching the area. Additionally, prevailing wind patterns from the southwest tend to transport moist air from the ocean towards Gresham.

Seasonal Humidity Variations

Humidity in Gresham exhibits seasonal variations. During summer months (June to September), higher temperatures and increased evaporation rates result in higher humidity levels. Relative humidity often exceeds 70% during these warm months, making the air feel muggy and uncomfortable. In contrast, winter months (December to February) are typically colder and drier, with relative humidity levels dropping below 50%. This is due to reduced evaporation rates and the absence of significant moisture sources. During the spring and fall seasons, humidity levels gradually transition between the extremes of summer and winter.

Wind Speed and Patterns

Gresham, Oregon, experiences moderate wind speeds throughout the year. The average annual wind speed is approximately 8.5 miles per hour (mph). During the spring and summer months, winds tend to be lighter, ranging from 6 to 10 mph. In contrast, during the fall and winter months, winds can be stronger, with gusts reaching up to 20 mph or higher.

The prevailing wind direction in Gresham is from the west and southwest. This pattern is influenced by the Cascade Mountains to the east, which act as a barrier to winds from that direction. As a result, winds in Gresham typically blow from the ocean towards the mountains, bringing with them moisture and cooler temperatures.

Best Time to Visit for Outdoor Activities

Gresham boasts a temperate climate with four distinct seasons. For those seeking to enjoy outdoor activities, the spring and fall seasons offer the most pleasant weather conditions. From March to May, temperatures range from the mid-40s to mid-60s Fahrenheit, while September to November experiences temperatures in the low to mid-50s Fahrenheit. These months provide ideal conditions for hiking, biking, and exploring Gresham’s many parks and natural areas, such as Mount Hood National Forest and Oxbow Regional Park.

Best Time to Visit for Cultural and Urban Experiences

For those interested in experiencing Gresham’s cultural offerings and urban attractions, the summer months provide ample opportunities. From June to August, temperatures average in the mid to high 70s Fahrenheit, creating a comfortable environment for outdoor festivals, concerts, and farmers’ markets. Gresham Farmers’ Market, held every Saturday from May to October, showcases local produce, crafts, and live music. The Gresham Festival of the Arts, held in July, features performances by regional artists, food vendors, and art exhibitions.

Economic Impact

The growth of the solar industry in Gresham has had a positive impact on the local economy. In recent years, several solar companies have opened offices in the city, creating new jobs and stimulating economic activity. The industry has also led to the development of new supply chains, as local businesses have begun to provide goods and services to solar companies. Additionally, the installation of solar panels on homes and businesses has reduced energy costs for many residents and business owners, freeing up money that can be spent in other areas of the economy.

Environmental Benefits

The growth of solar energy in Gresham has also had a positive impact on the environment. Solar panels generate electricity without producing any emissions, which helps to reduce air pollution and greenhouse gas emissions. In 2020, Gresham’s solar panels generated enough electricity to offset the equivalent of over 100,000 gallons of gasoline. In addition to reducing emissions, solar energy can also help to reduce water consumption, as it does not require any water to generate electricity.

Topography in Gresham, United States

Gresham, Oregon is located in the Tualatin Valley, a region characterized by rolling hills and fertile soils. The city itself is situated at the confluence of the Sandy and the Columbia Rivers, providing a diverse topography with both upland and lowland areas. The elevation of Gresham ranges from approximately 100 feet (30 meters) above sea level at the riverbanks to over 500 feet (150 meters) in the surrounding hills.

The upland areas of Gresham are predominantly composed of gently sloping hills, often covered in dense vegetation. These hills provide scenic vistas and recreational opportunities, such as hiking and mountain biking. The lowlands, on the other hand, are characterized by flatter terrain and are primarily used for agriculture, residential development, and industrial activities. The Sandy River and the Columbia River form natural boundaries for Gresham, creating unique riparian habitats and wetlands that support a variety of plant and animal life. Overall, the topography of Gresham offers a rich tapestry of landscapes, contributing to the city’s natural beauty and recreation opportunities.

Portland International Airport (PDX)

Portland International Airport (PDX) is the nearest airport to Gresham, Oregon. It is located approximately 10 miles west of Gresham and is easily accessible by car or public transportation. PDX is a major airport with a wide range of domestic and international flights. There are direct flights to many major cities in the United States, as well as to several destinations in Canada, Mexico, and Europe. PDX is a convenient and efficient option for travelers who need to fly to or from Gresham.

Gresham Municipal Airport (KTM)

Gresham Municipal Airport (KTM) is a smaller airport located approximately 2 miles south of Gresham. It is primarily used for general aviation, but it also has a few scheduled commercial flights to nearby cities. KTM is a good option for travelers who need to fly to or from Gresham on a smaller plane. It is also a good option for pilots who need to store their planes in a convenient location.

History and Culture

Gresham, Oregon, nestled in the Portland metropolitan area, holds a unique place in the region’s history. Founded by Walter A. Gresham in 1851, it initially served as a resting point for travelers and traders heading west. As the region grew, Gresham became a thriving agricultural center and eventually incorporated as a city in 1905. Throughout its history, Gresham has preserved its rich heritage, with many historic buildings and sites still standing today.

The city boasts a vibrant cultural scene, offering a diverse array of arts and entertainment options. The Gresham Art Center showcases local and regional artists, while the Gresham Historical Society Museum provides insights into the city’s past. The Main Street Farmers Market showcases local produce and crafts, and the Mount Hood Jazz Festival brings world-renowned musicians to the city every summer. Gresham’s parks and natural areas provide ample opportunities for outdoor recreation and relaxation.