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 sea temperature 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
Observing a rise in May, the average high-temperature goes from April's enjoyable 61.5°F (16.4°C) to a pleasant 72°F (22.2°C). Marcus Hook experiences an average nighttime temperature of 55°F (12.8°C) in the month of May.Humidity
In May, the average relative humidity is 76%.Rainfall
In Marcus Hook, Pennsylvania, in May, during 16.3 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. Throughout the year, there are 148.4 rainfall days, and 25.94" (659mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Marcus Hook aggregates 0.16" (4mm) of snow. In Marcus Hook, during the entire year, snow falls for 12.6 days and aggregates up to 7.28" (185mm) of snow.Ocean temperature
In Marcus Hook, in May, the average water temperature is 54°F (12.2°C).Note: Swimming in 54°F (12.2°C) feels unbearing at 55.4°F (13°C) and can be life-risking below 50°F (10°C), causing breathing issues and cold shock, depending on a person's capacity.
Daylight
In May, the average length of the day in Marcus Hook is 14h and 23min.On the first day of the month, sunrise is at 6:00 am and sunset at 7:56 pm. On the last day of May, sunrise is at 5:35 am and sunset at 8:23 pm EDT.
Sunshine
The average sunshine in May is 8.7h.UV index
The months with the highest UV index in Marcus Hook are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.Note: A maximum UV index of 6 in May translates into the following recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows?
What is the water temperature in May in Marcus Hook?
What is the average length of the day in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Marcus Hook have in May?
What are the months with the highest UV index?
What is the UV index reading in May?
Average temperature in May
Marcus Hook, PA
- Average high temperature in May: 72°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in May: 55°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in May
Marcus Hook, PA
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Marcus Hook, PA
- Average wind speed in May: 6.8mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in May
Marcus Hook, PA
- Average humidity in May: 76%
The months with the highest relative humidity are February, October and December (77%).
The month with the lowest relative humidity is April (71%).
Average rainfall in May
Marcus Hook, PA
- Average rainfall in May: 2.32"
The wettest month (with the highest rainfall) is August (3.11").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in May
Marcus Hook, PA
- Average rainfall days in May: 16.3 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (7.1 days).
Average snowfall in May
Marcus Hook, PA
- Average snowfall in May: 0.16"
The month with the highest snowfall is March (2.32").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Marcus Hook, PA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in May
Marcus Hook, PA
- Average sea temperature in May: 53.9°F
The best month for swimming (with the highest average sea temperature) is August (75.9°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).
Average daylight in May /
Average sunshine in May
Marcus Hook, PA
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in May
Marcus Hook, PA
- Average sunshine days in May: 12.7 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in May
Marcus Hook, PA
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Marcus Hook, PA
- Average cloud cover in May: 45
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in May
Marcus Hook, PA
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Marcus Hook, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location