King of Prussia (PA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit King of Prussia.
Climate overview of King of Prussia
King of Prussia, Pennsylvania, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 31°C (88°F) in July, while winters cool to 5°C (41°F) in January.
With around 1287 mm (51 in) of annual rain/snowfall, King of Prussia has a notably wet climate. However, this rain/snowfall is not evenly distributed, the city has very warm summers and cold winters. The wettest month is August. Sunshine peaks in July, when the city sees around 9.2 hours of sunshine per day.
King of Prussia Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in King of Prussia - and find the best time to visit.
Monthly Temperature in King of Prussia
Depending on the time of the year, temperatures range from very warm to chilly in King of Prussia. Average daytime temperatures reach a very warm 31°C (88°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 5°C (41°F).
At night, temperatures range from around 19°C (66°F) in July to -5°C (23°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in King of Prussia
King of Prussia has a relatively rain/snowy climate with high precipitation levels, averaging 1287 mm (51 in) of rain/snowfall annually. King of Prussia experiences moderate seasonal variation in rainfall, with monthly averages ranging from 143 mm (5.6 in) in August, the wettest month, and 78 mm (3.1 in) in November, the driest month. For more details, please visit our King of Prussia Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in King of Prussia
King of Prussia can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 9.2 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 4.7 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Water Temperature in King of Prussia
The mean water temperature over the year ranges from 5°C (41°F) in February to 25°C (77°F) in August.
Water temperature over the year
Humidity in King of Prussia by Month
The relative humidity is high throughout the year in King of Prussia.
The city experiences its highest humidity in September, reaching 72%. In April, the humidity drops to its lowest level at 61%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit King of Prussia
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: April, May, June, September and October
- Warmest weather: July and August
- Most sunshine: June and July
- Fewest rainy days: March, September and November
- Best for swimming: July, August and September.
- Seasonal pattern: Very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -5°C (23°F).
Frequently asked questions about the climate in King of Prussia
What is the best time to visit King of Prussia?
April, May, June, September and October typically offer the most optimal weather in King of Prussia. In contrast, January, February and December tend to have less optimal conditions. King of Prussia has very warm summers and cold winters.
What temperatures can I expect in King of Prussia?
Daytime highs range from 5°C (41°F) in January to 31°C (88°F) in July. Nighttime lows range from -5°C (23°F) to 19°C (66°F). Temperatures vary considerably through the year.
How much rain does King of Prussia get?
Annual rainfall is around 1287 mm (51 in). August is the wettest month with 143 mm (5.6 in), while November is the driest with 78 mm (3.1 in).
How sunny is King of Prussia?
King of Prussia receives around 2,500 hours of sunshine per year. July is the sunniest month with 275 hours, while December is the cloudiest with just 140 hours. Overall, King of Prussia enjoys abundant sunshine.
King of Prussia 3-Day Forecast
King of Prussia on the map
King of Prussia is highlighted - select any city to see its climate.
Popular this month
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
The 10 most alternative cities in the United States
Discover the top 10 fun and alternative U.S. cities rich in art, culture, and adventure. From Portland's hippy charm to Sedona's stunning landscapes.
Sedona: Explore Majestic Red Rock Landscapes
A picturesque artists' town surrounded by red rocks and known for its spirituality, vortex energy, and stunning hikes like Cathedral Rock.
10 most idyllic villages to visit in the United States
Discover 10 idyllic villages in the USA, from California to Vermont. Explore their unique charm, rich history, stunning nature, and vibrant arts scenes.