Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
With the onset of May, Philadelphia's average high-temperature sees a rise, moving from April's fresh 50.7°F (10.4°C) to a refreshing 63.7°F (17.6°C). An average low-temperature of 46°F (7.8°C) is expected during May.Humidity
In Philadelphia, the average relative humidity in May is 79%.Rainfall
In Philadelphia, in May, it is raining for 16.5 days, with typically 2.95" (75mm) of accumulated precipitation. In Philadelphia, New York, during the entire year, the rain falls for 166.4 days and collects up to 30.55" (776mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.8 snowfall days, in May, Philadelphia aggregates 0.12" (3mm) of snow. Throughout the year, in Philadelphia, there are 87.3 snowfall days, and 40.16" (1020mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 47min.On the first day of May, sunrise is at 5:52 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 5:22 am and sunset at 8:38 pm EDT.
Sunshine
The average sunshine in May in Philadelphia is 8.8h.UV index
The average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The average daily UV index of 4 in May transforms into the following instructions:
Act with care - The suggestion to avoid sunburn is emphasized. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Philadelphia?
What is the average humidity in May in Philadelphia?
How much does it rain in Philadelphia in May?
What is the last month it snows in Philadelphia?
What is the average length of the day in May in Philadelphia?
What time are sunrise and sunset in May in Philadelphia?
How long on average sun shines in May in Philadelphia?
What is the UV index reading in May in Philadelphia?
Average temperature in May
Philadelphia, NY
- Average high temperature in May: 63.7°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in May: 46°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).
Average pressure in May
Philadelphia, NY
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Philadelphia, NY
- Average wind speed in May: 7.6mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in May
Philadelphia, NY
- Average humidity in May: 79%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is April (77%).
Average rainfall in May
Philadelphia, NY
- Average rainfall in May: 2.95"
The wettest month (with the highest rainfall) is October (3.39").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in May
Philadelphia, NY
- Average rainfall days in May: 16.5 days
The month with the highest number of rainy days is October (17.4 days).
The month with the least rainy days is February (8.1 days).
Average snowfall in May
Philadelphia, NY
- Average snowfall in May: 0.12"
The month with the highest snowfall is December (9.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Philadelphia, NY
- Average snowfall days in May: 0.8 days
The month with the highest number of snowfall days is January (20.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Philadelphia, NY
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 8h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The months with the least sunshine are January and February (Average sunshine: 2h and 54min).
Average sunshine days in May
Philadelphia, NY
- Average sunshine days in May: 12.5 days
The month with the most sunshine days is September (14.8 days).
The month with the least sunshine days is February (6.9 days).
Average UV index in May
Philadelphia, NY
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Philadelphia, NY
- Average cloud cover in May: 43
The months with the most cloud cover are January and February (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in May
Philadelphia, NY
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Philadelphia, New York, USA
Weather forecast for your location
2. Allow the app to use your location