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West Chester (PA) Climate by Month

The temperature in West Chester can vary quite a bit throughout the year. Temperatures can be very warm during the warmest months, and cold during the cooler months. It also has a relatively rain/snowy climate with high levels of precipitation. Let’s explore the climate details in depth to provide you with a complete overview.

Average day and night temperature

Visitors to West Chester can expect significant temperature changes throughout the year. On average, daytime temperatures range from a very warm 30°C in July to a chilly 4°C in February. Nighttime temperatures can drop, with averages reaching -6°C in February.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

West Chester is known for its substantial rain/snowfall, with annual precipitation reaching 1300 mm. The amount of precipitation varies moderately throughout the year. The wettest month, October, sees around 150 mm of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, November, still receives a respectable 76 mm of rainfall.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

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.

Monthly hours of sunshine

Data from: Philadelphia, the United States of America (37 KM, 23 Miles).

Daily hours of sunshine

Data from: Philadelphia, the United States of America (37 KM, 23 Miles).

The best time of year to visit West Chester in the United States of America

During the months of May and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is summer in West Chester?
    The hottest season / summer takes place in June, July, August and September.
  • Which is the warmest month in West Chester?
    July has an average maximum temperature of 30°C and is the warmest month of the year.
  • Which is the coldest month in West Chester?
    The coldest month is February with an average maximum temperature of 4°C.
  • Which is the wettest month in West Chester?
    October tops the wettest month list with 150 mm of rainfall.
  • Which is the driest month in West Chester?
    November is the driest month with 76 mm of precipitation.
  • Which is the sunniest month in West Chester?
    July is the sunniest month with an average of 275 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for West Chester (PA)

    Sun   Dec 15
    3°C | -6°C
    E 11 km/h
    3 mm
    overcast and slight rain

    overcast and slight rain

    Mon   Dec 16
    9°C | 1°C
    E 7 km/h
    8.8 mm
    overcast and rain

    overcast and rain

    Tue   Dec 17
    14°C | 4°C
    W 18 km/h
    2.2 mm
    clear and  chance of slight rain

    clear and chance of slight rain