Normal weather for Philadelphia in May
It's warm in May in Philadelphia with an average temperature of 25°C. Temperatures this month range from a low of 24°C to a high of 27°C. At night, you can expect temperatures between 6°C and 11°C.
According to weather history, there is only 6,2 mm of precipitation in May. The wind speed is around 3 Bft, mostly coming from the Southeast.
Philadelphia in May |
New York | ||
|---|---|---|---|
 Average Temperature |
25°C | 22°C | |
 High Temp |
27°C | 28°C | |
| Low Temp |
24°C | 17°C | |
 Total Precipitation |
6,2 mm | 105 mm | |
| Rainy Days |
2 days | 14 days | |
Start of May
The month of May starts in Philadelphia with hot temps, averaging around 27°C during the day and nights around 11°C. There’s little chance of precipitation. The weather’s mostly sunny and dry.
With the temperature difference between day and night, it’s smart to wear layers. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. In the evening and morning, choose a light jacket, sweater or hoodie, and long pants.
Mid May
By mid-May, daytime temps drop to around 26°C, with nights around 9°C. No precipitation expected during this period, so you can enjoy plenty of sunshine.
Since it cools down at night, it’s a good idea to wear layers. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. In the evening and morning, choose a light jacket, sweater or hoodie, and long pants.
End of May
By the end of May, the average daytime temperature in Philadelphia is around 25°C, while nighttime temps are about 8°C. No precipitation expected at the end of the month; it’ll be mostly sunny.
Because temperatures drop in the evening, wearing layers is recommended. A T-shirt, light pants or skirt, and a light jacket are great for the day. In the evening and morning, go for a warm jacket, sweater or hoodie, and long pants.
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is May a good time to visit Philadelphia?
Looking for great weather? May is a good time to be in Philadelphia. The temperatures are nice, and there’s not too much rain.
Temperature records for Philadelphia in May
Check out the climate of Philadelphia for all months and discover the best travel time
April
Daily Temperature in May in Philadelphia
This chart shows the average daily high and low temperatures in May for Philadelphia, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in May in Philadelphia
The chart below shows the average daily precipitation in May for Philadelphia, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for May, you can expect about 2 days of precipitation in Philadelphia.
Daily UV Index in May in Philadelphia
This chart shows the average daily UV index in May in Philadelphia, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in May in Philadelphia Over the Years
This chart shows the average temperature in May in Philadelphia, measured in degrees Celsius, over the past few years.
Total Precipitation in May in Philadelphia Over the Years
This chart shows the average precipitation in May in Philadelphia, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily Climate in May for Philadelphia
Click on any day in May to get detailed info about the usual weather on that day in Philadelphia. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in May in Philadelphia
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Average Weather in Philadelphia by Month
Click on a month below to see detailed weather info for Philadelphia. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Philadelphia for all months at once
