Pennsylvania Weather by Month — Temperature & Rainfall Guide

Pennsylvania is a region in the United States of America. Many people wonder what the weather conditions are in Pennsylvania over the year. What is the best time to visit Pennsylvania?

This page shows the average weather conditions by month in Pennsylvania over the year in: January, February, March, April, May, June, July, August, September, October, November, December.

In January the weather in Pennsylvania is generally less favorable. January is a winter month. The temperatures range from very low in Bradford with -1°C (30°F) to low in Essington with 5°C (41°F). On average, this month is the coldest month of the year in Pennsylvania.

Find more detailed climate information for Pennsylvania in January here.

In February the weather in Pennsylvania is generally less favorable. February is a winter month. The temperatures range from very low in Bradford with -1°C (30°F) to low in Essington with 6°C (43°F).

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In March the weather in Pennsylvania ranges from less favorable in Pittsburgh to mixed in Philadelphia. The temperatures range from low in Erie with 6°C (43°F) to moderate in Philadelphia with 12°C (54°F).

Find more detailed climate information for Pennsylvania in March here.

In April the weather in Pennsylvania ranges from mixed in Horsham to very good in York. The temperatures range from moderate in Erie with 12°C (54°F) to pleasant in Philadelphia with 19°C (66°F).

Find more detailed climate information for Pennsylvania in April here.

In May the weather in Pennsylvania ranges from very good in Gettysburg to excellent in Philadelphia. The temperatures range from pleasant in Erie with 19°C (66°F) to high in Philadelphia with 24°C (75°F).

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In June the weather in Pennsylvania is generally very good. June is a summer month. The average maximum daytime temperatures are high and range from 23°C (73°F) in Mount Pocono to 29°C (84°F) in Philadelphia.

Find more detailed climate information for Pennsylvania in June here.

In July the weather in Pennsylvania ranges from good in Philadelphia to excellent in Pittsburgh. July is a summer month. The temperatures range from high in Somerset with 26°C (79°F) to very high in Philadelphia with 31°C (88°F). On average, this month is one of the warmest months of the year in Pennsylvania. So be prepared and make sure to dress lightly.

Find more detailed climate information for Pennsylvania in July here.

In August the weather in Pennsylvania ranges from good in Philadelphia to excellent in Pittsburgh. August is a summer month. The average maximum daytime temperatures are high and range from 25°C (77°F) in Mount Pocono to 30°C (86°F) in Philadelphia. These night and day temperatures are an average and some days may be even warmer. So be prepared and bring light clothes.

Find more detailed climate information for Pennsylvania in August here.

In September the weather in Pennsylvania ranges from very good in Philadelphia to excellent in Pittsburgh. The temperatures range from pleasant in Mount Pocono with 21°C (70°F) to high in Philadelphia with 26°C (79°F).

Find more detailed climate information for Pennsylvania in September here.

In October the weather in Pennsylvania ranges from mixed in Clarion to very good in Philadelphia. The temperatures range from moderate in Bradford with 15°C (59°F) to pleasant in Philadelphia with 20°C (68°F).

Find more detailed climate information for Pennsylvania in October here.

In November the weather in Pennsylvania ranges from less favorable in Somerset to mixed in Philadelphia. The temperatures range from low in Mount Pocono with 8°C (46°F) to moderate in Essington with 13°C (55°F).

Find more detailed climate information for Pennsylvania in November here.

In December the weather in Pennsylvania is generally less favorable. December is a winter month. The average maximum daytime temperatures are low and range from 3°C (37°F) in Bradford to 9°C (48°F) in Essington.

Find more detailed climate information for Pennsylvania in December here.