Upper Darby Climate & Monthly Temperature Overview – United States

Summer:

Upper Darby experiences warm to hot summers with average high temperatures ranging from 80°F (27°C) in June to 86°F (30°C) in July and August. Average lows hover around 65°F (18°C). The humidity levels can be high during these months, making the air feel muggy and oppressive. Precipitation is common, with occasional thunderstorms and the possibility of severe weather like hail or even tornadoes.

Winter:

Winters in Upper Darby are cold and chilly, with average high temperatures in the mid-40s °F (7°C) and average lows in the mid-20s °F (-3°C). Temperatures can drop below freezing at night, and occasional snowfall is possible. However, significant snowfall events are not very common in the area. The air is typically dry during the winter months, so the cold weather can feel less harsh than in areas with higher humidity.

Historical and Projected Temperature Trends

Historically, Upper Darby’s annual average temperature has hovered around 54.5°F (12.5°C). Over the past century, however, there has been a gradual upward trend, and temperatures are now about 2°F higher than they were in the 1920s. This warming trend is consistent with the global pattern of climate change.

Future Temperature Projections

According to climate models, Upper Darby’s average temperature is projected to continue rising in the coming decades. By the middle of the century, it is likely to be between 2°F and 4°F higher than the current average. The increase will be more pronounced in the summer months, when temperatures could reach well into the 90s on a regular basis. These higher temperatures will have a significant impact on the local environment and quality of life for residents.

Cloud Cover

Upper Darby, United States experiences a significant amount of cloud cover throughout the year. The average annual cloud cover is around 60%, with the cloudiest months being December and January, when cloud cover can reach up to 70%. The least cloudy months are July and August, when cloud cover drops to around 50%.

The amount of cloud cover can have a significant impact on the weather in Upper Darby. On cloudy days, temperatures are typically cooler and there is less sunshine. On clear days, temperatures are typically warmer and there is more sunshine. Cloud cover can also affect precipitation, as clouds can block out the sun and prevent rain or snow from reaching the ground.

Yearly Precipitation

Upper Darby, located in the eastern United States, experiences a humid subtropical climate with abundant precipitation throughout the year. The average annual precipitation is approximately 47 inches (1,194 mm), spread fairly evenly across the months. However, the distribution of precipitation is slightly skewed towards the warmer months (April to September), with the heaviest rainfall occurring in July and August. During these months, thunderstorms and occasional tropical cyclones contribute to the higher rainfall totals. In contrast, the winter months (December to February) are typically drier, with a noticeable decrease in precipitation.

Seasonal Patterns

The seasonal precipitation patterns in Upper Darby are influenced by the region’s location and prevailing weather systems. During the spring and summer, the warm air of the Gulf of Mexico brings moist air masses that produce frequent thunderstorms and rain. The position of the Bermuda High, a semi-permanent subtropical high-pressure system, also plays a role in Upper Darby’s precipitation. When the Bermuda High is located close to the coast, it can block the passage of low-pressure systems and result in less frequent precipitation. In contrast, when the Bermuda High is situated further east, it allows for more storm systems to enter the region, leading to increased precipitation.

Average Rainfall

In Upper Darby, the average annual rainfall is 43.2 inches (109.7 cm). Precipitation is distributed relatively evenly throughout the year, with a slight peak during the summer months. The wettest months are July and August, with an average of 4.6 inches (11.7 cm) of rainfall each, and the driest month is February, which receives an average of 2.7 inches (6.9 cm) of precipitation.

Variability and Extremes

The annual rainfall in Upper Darby can vary significantly from year to year. The driest year on record was 1957, when the total precipitation was only 30.6 inches (77.7 cm), while the wettest year on record was 2011, with a total of 62.9 inches (160 cm) of rainfall. Extreme precipitation events, such as heavy downpours and thunderstorms, can also occur in Upper Darby, sometimes leading to flooding and other hazards.

Snowfall Patterns in Upper Darby

Upper Darby, a township in Delaware County, Pennsylvania, experiences variable snowfall patterns. During the winter months, snowfall amounts can range significantly from season to season. The average annual snowfall in Upper Darby is approximately 22 inches, with the majority of accumulation occurring between December and February. However, extreme weather events can bring much higher snowfall totals in some years. For instance, in the winter of 2015-2016, Upper Darby received over 50 inches of snow, resulting in widespread power outages and travel disruptions.

Impact of Snowfall on Upper Darby

Snowfall can have both positive and negative impacts on Upper Darby. While it can provide opportunities for winter activities such as sledding and skiing, it can also create hazardous conditions for residents. Snow and ice can accumulate on roads, sidewalks, and driveways, making it difficult to travel. Additionally, snowfall can cause power outages and disrupt essential services such as public transportation and garbage collection. To mitigate these impacts, Upper Darby has implemented snow removal and salting programs to keep roads and sidewalks clear. Residents are also encouraged to prepare for winter weather by stocking up on essential supplies and taking precautions to avoid slips and falls.

Average Sunshine Hours

Upper Darby enjoys an ample amount of sunshine throughout the year. On average, the city experiences approximately 2,600 hours of sunshine annually. This equates to an average of 7 hours of sunshine per day. The sunniest months are typically June and July, which receive around 8-9 hours of sunshine each day. Even during the less sunny winter months, Upper Darby still receives an average of 4 hours of sunshine per day.

Seasonal Variation

The amount of sunshine in Upper Darby varies considerably throughout the seasons. The city experiences its longest days and highest levels of sunshine during the summer months (June through August). During this time, the sun rises early and sets late, providing extended daylight hours. In contrast, the winter months (December through February) are shorter and receive less sunshine. The sun rises later and sets earlier, and the days are noticeably shorter.

Overview of Moon in Upper Darby, United States

Moon is an affluent township located in Delaware County, Pennsylvania, United States. It is a suburb of Philadelphia, situated approximately 10 miles southwest of the city center. Moon encompasses an area of 5.6 square miles and is home to a population of over 14,000 residents. The township is known for its tree-lined streets, spacious homes, and excellent public services. Moon provides a desirable living environment for families, with a highly-rated school district, numerous parks and recreational facilities, and a thriving community culture.

History and Development of Moon

The history of Moon dates back to the early 18th century, when the area was inhabited by Native American tribes. European settlers arrived in the mid-18th century and established a small farming community. In the late 19th and early 20th centuries, Moon experienced significant growth as a bedroom community for Philadelphia. The population boomed after World War II, and the township developed its present-day suburban character. Moon has a rich history and has preserved several historic landmarks, including the Moon Mansion, which serves as the township’s community center. The township continues to evolve and adapt to the needs of its residents, while maintaining its charming and welcoming atmosphere.

Humidity Trends in Upper Darby

Upper Darby, located in Pennsylvania, United States, experiences varying humidity levels throughout the year. Summers are typically warm and humid, with average relative humidity hovering around 70% during the daylight hours. The high humidity levels can contribute to a muggy and uncomfortable feeling, especially during periods of extended heat. Winter months, in contrast, tend to be drier, with relative humidity dropping to about 60% on average. During cold and windy days, the humidity levels can dip even lower, creating drier conditions.

Seasonal Variations and Influences

The seasonal differences in humidity in Upper Darby are primarily driven by temperature fluctuations. As temperatures rise in the summer, the air’s capacity to hold moisture increases, resulting in higher humidity levels. The moisture evaporating from water sources, such as rivers, lakes, and damp ground, also contributes to the humidity. In winter, when temperatures drop, the air’s capacity to hold moisture decreases, leading to lower humidity levels. Additionally, the prevailing wind patterns in the region play a role in humidity variations. Winds from the Atlantic Ocean tend to bring more moisture into the area, contributing to higher humidity, while winds from the interior of the continent can bring drier air.

Average Wind Speed

Upper Darby experiences moderate wind speeds throughout the year, with an average annual wind speed of 10.2 mph. The windiest months are March and April, with average speeds of 12.0 and 11.9 mph, respectively. August is the calmest month, with an average wind speed of 8.9 mph.

Wind Direction

The prevailing wind direction in Upper Darby is from the west-southwest, accounting for approximately 20% of the total wind. Other common wind directions include west (18%), north-northwest (17%), and south-southwest (16%). The least common wind direction is east-southeast, with a frequency of only 5%.

Peak Season: Spring and Fall (April-May and September-October)

Upper Darby experiences pleasant weather during spring and fall, making them ideal times to visit. The average temperatures range from 45°F to 75°F, with minimal humidity and ample sunshine. The vibrant foliage in fall is a sight to behold, while spring brings an explosion of flowers. This season is perfect for strolling through historic neighborhoods, exploring museums, and attending outdoor events.

Shoulder Season: Winter and Summer (November-March, June-August)

Although these months may not be as popular for tourism, they offer their own unique advantages. Winter brings a cozy charm with average temperatures ranging from 25°F to 40°F. While snowfall is possible, it typically melts quickly. Reduced crowds make this a good time to visit indoor attractions, such as museums and galleries. In summer, temperatures can reach up to 90°F. However, Upper Darby offers ample opportunities for cooling off, including swimming pools, splash pads, and air-conditioned indoor spaces. Summer is also a great time to attend outdoor concerts, festivals, and sporting events.

Solar Energy Potential in Upper Darby

Upper Darby, a township in Delaware County, Pennsylvania, boasts a favorable solar energy potential. The area receives ample sunlight, with an average of 4.5 peak sunlight hours per day, making it an ideal location for solar photovoltaic (PV) systems. The township has several designated solar energy zones, and incentives and programs are available to encourage the adoption of solar technology.

Solar Initiatives and Support in Upper Darby

Upper Darby has taken proactive steps to promote solar energy. The township offers a solar permit fee waiver for residential and commercial properties, reducing the upfront costs of solar PV installations. Additionally, the township has partnered with local solar companies to provide discounted solar leases and purchasing options for residents. Educational programs and workshops are also available to help homeowners and businesses understand the benefits and processes of solar energy adoption. By implementing these initiatives, Upper Darby demonstrates its commitment to sustainability and clean energy solutions.

Overview of Topography

Upper Darby, situated in the state of Pennsylvania, lies within the Delaware River Basin and is characterized by a relatively flat terrain. The elevation ranges from 0 to 200 feet above sea level, with most areas falling between 50 and 150 feet. The topography is primarily composed of gently rolling hills, valleys, and a few streams that drain into the Darby Creek. The landforms have been shaped over millions of years by glacial processes and erosion, resulting in a topography that is favorable for a variety of human activities.

Specific Features and Impact

Notable topographic features in Upper Darby include the Darby Creek, which flows through the center of the township and provides a natural corridor for wildlife and recreation. The Crum Creek Valley, located in the western portion of the township, offers scenic vistas and is a popular destination for hiking and biking. Several small hills, such as Mt. Moriah Cemetery Hill and Ellis Hill, provide panoramic views of the surrounding area. These topographical variations have had a significant impact on human settlement and development in Upper Darby. The fertile valleys provided suitable land for agriculture, while the hills offered vantage points for defense and transportation. Today, the township’s topography continues to influence land use and transportation patterns, shaping the character and history of the community.

Philadelphia International Airport (PHL): The Closest Hub

The nearest major airport to Upper Darby, Pennsylvania, is Philadelphia International Airport (PHL). Located approximately 8 miles northeast of the city, PHL is a major hub for American Airlines, Frontier Airlines, Southwest Airlines, and United Airlines. With over 500 daily nonstop flights to domestic and international destinations, PHL offers convenient and efficient connections for travelers in Upper Darby. The airport is easily accessible by car, public transportation, or ride-sharing services.

Other Nearby Airports

While PHL is the closest airport to Upper Darby, there are several alternative airports within a reasonable driving distance. Wilmington Airport (ILG) in Delaware is approximately 25 miles southwest of Upper Darby. While smaller than PHL, ILG offers limited commercial flights operated by Frontier Airlines and Spirit Airlines. Trenton-Mercer Airport (TTN) in New Jersey is another option, located approximately 30 miles east of Upper Darby. TTN serves mainly low-cost carriers such as Allegiant Air and Frontier Airlines.

History of Upper Darby

Upper Darby Township boasts a rich history that dates back to the 17th century. It was originally inhabited by the Lenni Lenape Native Americans before being purchased by William Penn in 1682. The township was officially established in 1693 and played a significant role in the American Revolution. During the Battle of Brandywine, the British forces briefly occupied the area, leaving behind various landmarks and historical sites that continue to attract visitors today. In the 19th century, Upper Darby experienced rapid industrialization and became a thriving manufacturing hub.

Modern-day Upper Darby

Today, Upper Darby is a vibrant and diverse township located just west of Philadelphia. With a population of over 80,000, it is the most populous township in Pennsylvania. The township is home to a variety of industries, including healthcare, education, and retail. Upper Darby also features several major shopping centers, including the Granite Run Mall and the Upper Darby Shopping Center. The township is well-connected by public transportation, with multiple SEPTA bus and trolley lines serving the area. Additionally, Upper Darby boasts numerous parks, recreation facilities, and community programs that offer residents a high quality of life.