West Chester (PA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit West Chester.
Climate overview of West Chester
West Chester, Pennsylvania, United States of America, sees big temperature differences between seasons, with July peaking at 30°C (86°F) and January dropping to 4°C (39°F).
The city has a wet climate, receiving around 1300 mm (51 in) of rain/snowfall per year. Despite the high annual total, it has very warm summers and cold winters. October is the wettest month. Sunshine peaks in July, when the city sees around 9.2 hours of sunshine per day.
West Chester Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in West Chester - and find the best time to visit.
Monthly Temperature in West Chester
Visitors to West Chester can expect significant temperature changes throughout the year. On average, daytime temperatures range from a very warm 30°C (86°F) in July to a chilly 4°C (39°F) in January.
Nighttime temperatures range from 19°C (66°F) in July to -6°C (21°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in West Chester
West Chester is known for its substantial rain/snowfall, with annual precipitation reaching 1300 mm (51 in). The amount of precipitation varies moderately throughout the year. The wettest month, October, sees around 150 mm (5.9 in) of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, November, still receives a respectable 76 mm (3 in) of rainfall. For more details, please visit our West Chester 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 West Chester
In West Chester, summer days are longer and more sunny, with daily sunshine hours peaking at 9.2 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 4.7 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in West Chester by Month
The relative humidity is high throughout the year in West Chester.
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 West Chester
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, August and September
- Warmest weather: July and August
- Most sunshine: June and July
- Seasonal pattern: Very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -6°C (21°F).
Frequently asked questions about the climate in West Chester
What is the best time to visit West Chester?
April, May, June, August and September typically offer the most optimal weather in West Chester. In contrast, January, February and December tend to have less optimal conditions. West Chester has very warm summers and cold winters.
What temperatures can I expect in West Chester?
Daytime highs range from 4°C (39°F) in January to 30°C (86°F) in July. Nighttime lows range from -6°C (21°F) to 19°C (66°F). Temperatures vary considerably through the year.
How much rain does West Chester get?
Annual rainfall is around 1300 mm (51 in). October is the wettest month with 150 mm (5.9 in), while November is the driest with 76 mm (3 in).
How sunny is West Chester?
West Chester 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, West Chester enjoys abundant sunshine.
West Chester 3-Day Forecast
West Chester (PA) 3-Day Forecast
West Chester on the map
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