Normal weather for Pennsylvania in May
It's warm in May in Pennsylvania with an average temperature of 23°C. Temperatures this month range from a low of 18°C to a high of 28°C. At night, you can expect temperatures between 7°C and 17°C.
In May, there is an average of 185 mm of precipitation, spread over 18 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
Looking for sun? May isn’t a good month to be in Pennsylvania. The temperature is nice, but there’s too much chance of rain.
Pennsylvania in May |
New York | ||
|---|---|---|---|
 Average Temperature |
23°C | 22°C | |
 High Temp |
28°C | 28°C | |
| Low Temp |
18°C | 17°C | |
 Total Precipitation |
185 mm | 105 mm | |
| Rainy Days |
18 days | 14 days | |
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
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Start of May
The month of May starts in Pennsylvania with mild temps, averaging around 21°C during the day and nights around 10°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month.
Mid May
By mid-May, daytime temps rise to around 23°C, with nights around 11°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of May
By the end of May, the average daytime temperature in Pennsylvania is around 26°C, while nighttime temps are about 15°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
Temperature records
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The climate in Pennsylvania is based on weather data from . Other places, like New York City, Miami or Los Angeles, might have different weather. You can check out all destinations in Pennsylvania to get the full picture of the climate.
April
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Daily Temperature in May in Pennsylvania
This chart shows the average daily high temperatures in May in Pennsylvania, measured in degrees Celsius. The bottom of the chart shows the days of May. Based on historical data, this chart shows the average daily temperatures for this month.
Daily Precipitation in May in Pennsylvania
The chart below shows the average daily precipitation in May for Pennsylvania, 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 18 days of precipitation in Pennsylvania.
Daily UV Index in May in Pennsylvania
This chart shows the average daily UV index in May in Pennsylvania, 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 Pennsylvania Over the Years
This chart shows the average temperature in May in Pennsylvania, measured in degrees Celsius, over the past few years.
Total Precipitation in May in Pennsylvania Over the Years
This chart shows the average precipitation in May in Pennsylvania, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily Climate in May for Pennsylvania
Click on any day in May to get detailed info about the usual weather on that day in Pennsylvania. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in May in Pennsylvania
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Average Weather in Pennsylvania by Month
Click on a month below to see detailed weather info for Pennsylvania. 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 Pennsylvania for all months at once
