Allentown, Pennsylvania Weather by Month

Allentown is a vibrant city located in Lehigh County, Pennsylvania, United States. Located in the eastern part of the state, Allentown is approximately 60 miles north of Philadelphia and 90 miles west of New York City. The city is located in the Lehigh Valley, surrounded by rolling hills and picturesque landscapes. Allentown boasts a rich history, diverse population, and thriving cultural scene, making it a dynamic destination for residents and visitors alike. From its historic architecture to its world-class museums and vibrant downtown area, Allentown offers a wealth of attractions and experiences that showcase the best of Pennsylvania.


Allentown is centrally located in the Lehigh Valley region of Pennsylvania, bordered by the Lehigh River to the south and the Blue Mountain range to the north. The city’s location at the confluence of several major transportation routes, including Interstate 78 and the Pennsylvania Turnpike, makes it easily accessible from both Philadelphia and New York City. Allentown’s geography is characterized by gently rolling hills, lush forests, and fertile farmland, providing residents and visitors with stunning natural scenery and abundant recreational opportunities.

Affiliation and Population

Allentown is affiliated with the United States of America as a city within the state of Pennsylvania. According to the latest available data, the population of Allentown is approximately 121,000 residents, making it the third-largest city in Pennsylvania. The city has a diverse population, with residents representing a wide range of cultural backgrounds and ethnicities. Allentown’s residents are known for their strong sense of community pride and active engagement in local affairs, contributing to the city’s vibrant and inclusive atmosphere.

Major Landmarks

Allentown is home to several major landmarks that highlight its rich history and cultural heritage. One of the city’s most iconic landmarks is the PPL Center, a state-of-the-art arena that hosts concerts, sporting events, and other entertainment productions throughout the year. Other notable landmarks include the Allentown Art Museum, which features a diverse collection of artworks spanning centuries and cultures, and the historic Old Allentown Cemetery, where many prominent figures from the city’s past are buried. Allentown’s downtown area is also dotted with historic buildings, charming shops, and vibrant restaurants, providing visitors with a glimpse into the city’s past and present.

Climate and Weather Overview

Average Climate Data

Below is a table detailing the average temperature, precipitation, and sunny days for each month in Allentown, Pennsylvania:

Month Average Temperature (Fahrenheit) Precipitation (inches) Sunny Days
January 29.3 3.43 13
February 32.7 2.79 12
March 41.2 3.72 14
April 53.1 3.61 16
May 63.8 4.14 16
June 73.3 4.33 15
July 77.5 4.41 16
August 75.6 4.24 15
September 68.2 3.58 13
October 56.6 3.12 14
November 47.3 3.38 13
December 35.3 3.28 13

Monthly Weather Overview


January in Allentown brings cold temperatures with an average of 29.3°F. Precipitation is relatively high during this month, with an average of 3.43 inches, often falling as snow. Outdoor activities may include skiing or snowboarding at nearby resorts such as Blue Mountain or Bear Creek Mountain Resort, while indoor activities such as visiting the Allentown Art Museum or attending concerts provide opportunities for cultural enrichment and socializing during the winter months.


February continues the cold weather pattern in Allentown, with an average temperature of 32.7°F. Precipitation remains high, providing favorable conditions for outdoor activities such as ice skating or sledding in local parks. Indoor activities such as visiting historic sites or attending theater productions offer options for relaxation and cultural enrichment during the winter season.


March marks the transition to spring in Allentown, with temperatures rising to an average of 41.2°F. While precipitation increases compared to previous months, the weather remains relatively mild, making it an ideal time for outdoor activities such as hiking, biking, or exploring local trails and parks. Spring festivals and community events offer opportunities for residents and visitors to celebrate the season and enjoy the city’s natural beauty.


April brings warmer temperatures to Allentown, with an average of 53.1°F. The arrival of spring heralds the blooming of flowers and the awakening of nature in the surrounding countryside. Outdoor enthusiasts can enjoy hiking, picnicking, or birdwatching in local parks such as Trexler Memorial Park or Cedar Creek Park. Cultural events such as art fairs or music festivals offer options for entertainment and socializing.


May heralds the arrival of warmer temperatures in Allentown, with an average of 63.8°F. The longer days and pleasant weather invite residents and visitors to engage in a variety of outdoor activities, including gardening, fishing, and golfing at local courses. Local farmers’ markets offer an abundance of fresh produce and artisanal goods, while outdoor concerts and festivals provide entertainment for all ages. Indoor activities such as visiting museums or attending lectures offer options for cultural enrichment and relaxation.


June brings mild and sunny weather to Allentown, with temperatures averaging 73.3°F. The summer season offers abundant opportunities for outdoor recreation, including hiking, biking, and boating on the Lehigh River. Local parks and trails beckon hikers, bikers, and nature enthusiasts to explore the scenic beauty of the region. Cultural events such as outdoor concerts or art markets offer opportunities to enjoy the warm weather and celebrate the season with friends and family.


July is characterized by warm and sunny weather in Allentown, with an average temperature of 77.5°F. Outdoor activities abound, with opportunities for hiking, camping, and swimming in nearby lakes and rivers. Independence Day celebrations and fireworks displays add to the festive atmosphere, drawing crowds from near and far. Indoor activities such as visiting museums or attending art workshops offer respite from the summer heat.


August continues the warm and sunny weather in Allentown, with an average temperature of 75.6°F. Outdoor enthusiasts can enjoy a variety of recreational activities, including fishing, boating, and picnicking in local parks and nature reserves. Local fairs and festivals celebrate the region’s agricultural heritage, with events such as livestock shows, tractor pulls, and craft markets. Indoor activities such as visiting art galleries or attending theater productions offer options for cultural enrichment and relaxation.


September brings cooler temperatures to Allentown, with an average of 68.2°F. The changing foliage creates a picturesque backdrop for outdoor adventures, including hiking, biking, and photography in the surrounding countryside. Harvest festivals and farmers’ markets offer opportunities to sample local produce and artisanal goods, while outdoor concerts and cultural events provide entertainment for all ages. Indoor activities such as visiting museums or attending cooking classes offer options for enrichment and relaxation as the seasons change.


October heralds the arrival of fall in Allentown, with temperatures averaging 56.6°F. The vibrant colors of autumn foliage attract visitors from near and far, offering scenic drives and hiking opportunities in nearby parks such as the Lehigh Parkway or Jacobsburg Environmental Education Center. Local pumpkin patches and corn mazes provide seasonal fun for families, while outdoor activities such as apple picking or nature photography offer opportunities for outdoor recreation. Indoor activities such as visiting art galleries or attending storytelling events offer options for cozy gatherings with friends and family.


November brings cooler temperatures and the possibility of early snowfall to Allentown, with an average of 47.3°F. As Thanksgiving approaches, residents and visitors can enjoy seasonal activities such as visiting local farms for pumpkin picking or hayrides. Outdoor enthusiasts may take advantage of the crisp fall weather for hiking, biking, or exploring nearby attractions such as the Delaware Water Gap National Recreation Area. Indoor activities such as attending holiday craft markets or cooking classes offer opportunities for creative expression and festive shopping.


December ushers in the winter season in Allentown, with temperatures averaging 35.3°F. While snow is common during this month, residents and visitors can still enjoy outdoor activities such as ice skating, sledding, or attending holiday light displays in local parks. Festive markets, concerts, and community events add to the seasonal cheer, providing entertainment for all ages. Indoor activities such as visiting museums or attending holiday concerts offer opportunities for warmth and cultural enrichment during the winter months.

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