Temperature in Pennsylvania in May

Daytime highs, nighttime lows and the warmest cities in Pennsylvania, the United States of America this May.

Pennsylvania, the United States of America, a region in the United States of America, experiences maximum daytime temperatures in May ranging from 19°C (66°F) in Erie to 24°C (75°F) in Philadelphia. Nighttime temperatures generally drop to 14°C (57°F) in Philadelphia and 10°C (50°F) in Erie.

What is the temperature of the different cities in Pennsylvania, the United States of America in May?

To get a sense of May's typical temperatures in the key spots of Pennsylvania, explore the map below. Click on a point for an in-depth look.

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Check the conditions for any month of the year.

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For a detailed overview over the year and the best time to visit Pennsylvania, check out our Pennsylvania's climate page.

See also: Pennsylvania weather by month.

Best Places to Visit in Pennsylvania in May

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Pennsylvania.

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in May: blue is cold, red is hot.

See all May weather averages, cities and regions in Pennsylvania

Pennsylvania temperatures in May: frequently asked questions

How hot does it get in Pennsylvania, the United States of America in May?

Expect daytime temperatures around 24°C (75°F) in Philadelphia. That makes May a high month for Pennsylvania, the United States of America.

How cold does it get at night in Pennsylvania, the United States of America in May?

After dark, Philadelphia cools to about 14°C (57°F) on an average May night.

What is the warmest city in May in Pennsylvania, the United States of America?

According to our recent database analysis, Philadelphia is the warmest city. It experiences an average maximum daytime temperature of approximately 24°C (75°F) and rarely drops below 14°C (57°F) during the night.

What is the coldest city in May in Pennsylvania, the United States of America?

For the month of May, Erie is the most temperate city in Pennsylvania, the United States of America based on our records. Highs average 19°C (66°F) and nighttime temperatures dip to around 10°C (50°F).

How much sun does Pennsylvania, the United States of America get in May?

Philadelphia enjoys approximately 247 hours of sunshine, offering a mostly sunny climate that adds a pleasant and vibrant feel to the month.

What is the water temperature in May?

The water temperature averages approximately 12°C (54°F) in Philadelphia this month, generally too cold for comfortable swimming.

Interested in more climate information?

We have much more information about the climate in Pennsylvania.

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