More commonly known as the “Keystone State,” Pennsylvania is home to stunning landscapes, rich culture, and the iconic Penn State University. However, amidst the growing urbanization, there are a select few cities in Pennsylvania where the temperatures soar during the summer months.
What’s alluring about the state is that Pennsylvania experiences four distinct seasons. However, the weather sure does become hot and stifling in some cities, particularly during summer.
So, if you are curating your getaway plans, this detailed guide will help you plan things well so you don’t have to experience the wrath of the heat in Pennsylvania.
1. Philadelphia
- Average Summer Temperature: 88°F (31°C)
- Hottest Months: July & August
Starting off strong with Philadelphia, the largest city in the state, but also one of the hottest. Summers here can be sweltering, with high humidity levels compounding the heat. July and August often see temperatures above 90°F, making heat advisories common. That being said, Philadelphia has a lot to offer if you are an outdoor person. You can start by visiting the Liberty Bell or taking a walk along Boathouse Row. Since there are more concrete structures and fewer green spaces, it adds to the urban heat, making Philly feel hotter. You can thus unwind in Spruce Street Harbor Park and Fairmount Park.
If you’re planning a trip and want to avoid extreme heat, check out the cities with the best weather in the US for more comfortable options.
2. Harrisburg
- Average Summer Temperature: 87°F (30.5°C)
- Hottest Months: July & August
Since Harrisburg is the state capital, there are numerous government buildings and bustle, all of which add to the uncomfortable heat in the summer. The city is located along the Susquehanna River, adding to the humidity, making the weather even more painful during the summers. Temperatures hover in the upper 80s, occasionally crossing 90°F during peak summers. However, you can beat the heat at areas like Riverfront Park. Also, City Island offers a recreational escape, away from the city’s heat.
3. Reading
- Average Summer Temperature: 86°F (30°C)
- Hottest Months: July & August
Located in southeastern Pennsylvania, Reading is among the hottest cities in the state. The heat and the discomfort are usually the highest in July. Since the city is in a valley, Reading’s geography traps heat, and the lack of strong breezes can make the days feel even warmer. That shouldn’t stop you from exploring the surroundings, though, because attractions like the Pagoda, located on Mount Penn is a must see. You can also enjoy the comfort of the air conditioners at Reading Public Museum and Berks County Heritage Center.
4. York
- Average Summer Temperature: 86°F (30°C)
- Hottest Months: July & August
York is located in south central Pennsylvania and is yet another one of the hottest cities in the state. However, beyond the sultry summers, the city is renowned for its industrial breakthroughs. The town regularly experiences temperatures in the upper 80s, especially in July and August. Furthermore, the high humidity levels further add to the discomfort. Some popular getaway spots are the York County History Center, the Harley-Davidson factory tour, and the Agricultural and Industrial Museum. You can also explore the Heritage Rail Trail County Park to enjoy the nature around.
5. Allentown
- Average Summer Temperature: 85°F (29.5°C)
- Hottest Months: July & August
Part of the iconic Lehigh Valley, Allentown experiences a mix of weather shifts. It is usually extremely hot during summer, reaching over 90°F in July. However, the city is also prone to storms and heavy rainfall. To beat the urban heat, Allentown has also invested extensively in developing green spaces, which bring some respite. You can explore spots like the Coca-Cola Park, Trexler Memorial Park, and Cedar Beach Park, walking along the nature trails. Also, the Dorney Park & Wildwater Kingdom is the perfect spot to beat the heat.
6. Lancaster
- Average Summer Temperature: 85°F (29.5°C)
- Hottest Months: July & August
Quite less talked about, Lancaster is located in Amish County and experiences warm and humid summers. During the peak summer months, especially July, the temperatures rise to 85°F and above. However, that doesn’t stop the locals from enjoying a variety of cultural and outdoor activities, including farmer’s markets. You can head to the Central Market to cool off in the AC or to Long’s Park and Lancaster County Central Park to find peace amidst the summer heat.
7. Easton
- Average Summer Temperature: 85°F (29.5°C)
- Hottest Months: July & August
Easton is another one of the hottest cities in Pennsylvania, where the combination of high temperature and high humidity makes it uncomfortable. July often sees highs around 85°F or more. Although it is a small town, the experiences you can indulge in are amazing. There are family-friendly spots, including the Crayola Experience and Karl Stirner Arts Trail, that you can explore. Also, downtown Easton has numerous markets, shopping centers, riverside activities, and cafes.
8. Bethlehem
- Average Summer Temperature: 85°F (29.5°C)
- Hottest Months: July & August
While on the topic of the Lehigh Valley, Bethlehem is another popular and hot city you can explore in Pennsylvania. The warm climate often reaches 85°F or higher, especially in July. Furthermore, the added humidity makes the weather even more uncomfortable. If you plan to indulge in the local culture, the historic downtown is a must-visit spot where you will find shaded cafes, galleries, and shops. To immerse yourself in nature, consider exploring Illick’s Mill Park and Monocacy Creek Trail, which are quite amazing, too.
9. Altoona
- Average Summer Temperature: 84°F (29°C)
- Hottest Months: July & August
Altoona is located in central Pennsylvania and surrounded by ridges and valleys, further entrapping the heat, especially during summer. During the peak summer months, the temperature easily exceeds 85°F or higher. While it’s not as humid as southeastern parts of the state, the heat is still noticeable. Some indoor destinations you can explore to escape the city’s heat are the Railroaders Memorial Museum and the Horseshoe Curve National Historic Landmark. Some popular spots for children and families include Lakemont Park and DelGrosso’s Amusement Park.
10. Chambersburg
- Average Summer Temperature: 84°F (29°C)
- Hottest Months: July & August
Chambersburg experiences long, warm summers close to the Maryland border with average highs around 84°F. Beyond the sweltering heat, the city is also renowned for its Civil War history and agricultural activities. If you are into performances and entertainment, head to Capitol Theatre Center during the evenings. Caledonia State Park is relatively nearby, allowing you to indulge in shaded picnics and hiking experiences.
11. Lebanon
- Average Summer Temperature: 84°F (29°C)
- Hottest Months: July & August
Lebanon is a small city located between Harrisburg and Reading. During the summer months, it can get fairly hot and stifling. July is usually the hottest month in the city, with temperatures easily rising above 84°F. To beat the heat, consider heading to Lebanon Valley Rail-Trail early in the day. Another popular getaway spot worth checking out is Stoever’s Dam Park, which offers nature walking trails and respite from the heat.
12. Norristown
- Average Summer Temperature: 83°F (28.5°C)
- Hottest Months: July & August
Norristown is a popular city in the Pennsylvania metro area and experiences scorching heat during the peak summers. The dense urban layout is one of the main reasons behind the extensive heat. One of the most popular local family getaway spots is Elmwood Park Zoo, best enjoyed during the early mornings. Albeit the sunny weather, Schuylkill River Trail is also great for biking amidst nature.
13. Williamsport
- Average Summer Temperature: 83°F (28.5°C)
- Hottest Months: July & August
Renowned for being home to the “Little League Baseball,” Williamsport experiences warm summers, with temperatures often hitting 83°F and higher. The World of Little League Museum is a popular, air-conditioned attraction where you can find calm and respite from the heat. Also, the city is located in the western part of the Susquehanna River, adding to the humidity. There are shaded walking paths in Brandon Park, which you can explore too.
14. State College
- Average Summer Temperature: 82°F (28°C)
- Hottest Months: July & August
Home to the iconic Penn State University, State College is yet another one of the hottest cities in Pennsylvania. The warm summers are often paired with rain, which brings comfort and respite from time to time. During the peak summer months, especially in July, the temperatures rise to 82°F, wherein the town remains relatively hot but quiet. The Arboretum at Penn State is one of the best spots where you can find peace away from the heat, thanks to the shaded gardens and water features.
15. Erie
- Average Summer Temperature: 81°F (27.5°C)
- Hottest Months: July & August
Just as the name suggests, Erie is located near Lake Erie, where the city experiences warm and humid summers. July often sees highs of around 81°F, though the lake effect can sometimes moderate temperatures. One of the best spots to explore there is Presque Isle State Park, which is a beach getaway spot during the extreme heat, where you can indulge in swimming, paddleboarding, etc. The Erie Maritime Museum is also a great spot to find some comfort away from the heat.
Final Words
Pennsylvania has much to offer its visitors, especially its rich culture, picturesque parks and gardens, and laid-back nature. However, the peak summers, especially between July and August, experience high heat and uncomfortable weather with high humidity. The next time you are planning your getaway to Pennsylvania, we have sorted out a list of the 15 cities that will help you plan smarter for all the cooler explorations.
