Exton (PA) Weather & Climate: Best Time to Visit

Average temperatures, rainfall, sunshine and the best time to visit Exton.

Current conditions Exton –  

Climate overview of Exton

Exton, Pennsylvania, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 30°C (86°F) in July, while winters cool to 4°C (39°F) in January.

The city has a wet climate, receiving around 1310 mm (52 in) of rain/snowfall per year. Despite the high annual total, it has very warm summers and cold winters. October is the wettest month. The most sunshine falls in July, with an average of 9.2 hours of daily sunshine.

Exton Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Exton - and find the best time to visit.

Monthly Temperature in Exton

Depending on the time of the year, temperatures range from very warm to chilly in Exton. 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 18°C (64°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 Exton

Exton has a relatively rain/snowy climate with high precipitation levels, averaging 1310 mm (52 in) of rain/snowfall annually. The amount of precipitation varies moderately throughout the year. The wettest month, October, sees around 144 mm (5.7 in) of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, November, still receives a respectable 75 mm (3 in) of rainfall. For more details, please visit our Exton Precipitation page.

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

Sunshine Hours in Exton

In Exton, 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

Data from: Philadelphia, the United States of America (39 KM, 24 Miles).

Daily hours of sunshine

Data from: Philadelphia, the United States of America (39 KM, 24 Miles).

Humidity in Exton by Month

Best Time to Visit Exton

Conditions in Exton are generally most comfortable in May, June, August and September. They are typically least comfortable in January, February and December.

Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.

  • Best overall: May, June, August and September
  • Warmest weather: July and August
  • Most sunshine: June and July
  • Fewer rainy days: January, February, March, September and November
  • 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 Exton

What is the best time to visit Exton?

May, June, August and September typically offer the most optimal weather in Exton. In contrast, January, February and December tend to have less optimal conditions. Exton has very warm summers and cold winters.

What temperatures can I expect in Exton?

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 18°C (64°F). Temperatures vary considerably through the year.

How much rain does Exton get?

Annual rainfall is around 1310 mm (52 in). October is the wettest month with 144 mm (5.7 in), while November is the driest with 75 mm (3 in).

How sunny is Exton?

Exton 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, Exton enjoys abundant sunshine.

Exton 3-Day Forecast

Exton on the map

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