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
The shift into May is characterized by a rise in the average high-temperature, transitioning from April's comfortable 62.6°F (17°C) to a pleasant 72.1°F (22.3°C). Port Penn experiences a mean low-temperature of 55.4°F (13°C) during May.Humidity
May, June, September and October, with an average relative humidity of 77%, are the most humid months.Rainfall
In May, the rain falls for 16.7 days. Throughout May, 2.48" (63mm) of precipitation is accumulated. Throughout the year, there are 147.7 rainfall days, and 27.8" (706mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Port Penn aggregates 0.12" (3mm) of snow. Throughout the year, there are 13.8 snowfall days, and 6.65" (169mm) of snow is accumulated.Daylight
In Port Penn, the average length of the day in May is 14h and 22min.On the first day of May, sunrise is at 6:02 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:23 pm EDT.
Sunshine
In May, the average sunshine is 8.6h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: During May, 6 as the daily maximum UV index converts into the following advice:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Stay sun-safe with clothing that is both closely woven and worn loosely. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Port Penn in May?
What are the most humid months?
What is the average humidity in May?
How much does it rain in Port Penn in May?
What is the last month it snows?
What is the average length of the day in May in Port Penn?
When are sunrise and sunset in May?
How long on average sun shines in May?
What is the month with the highest UV index?
What is the UV index intensity in May?
Average temperature in May
Port Penn, DE
- Average high temperature in May: 72.1°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in May: 55.4°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in May
Port Penn, DE
- 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
Port Penn, DE
- Average wind speed in May: 7.2mph
The windiest months (with the highest average wind speed) are February, March and April (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in May
Port Penn, DE
- Average humidity in May: 77%
The months with the highest relative humidity are May, June, September and October (77%).
The month with the lowest relative humidity is April (72%).
Average rainfall in May
Port Penn, DE
- Average rainfall in May: 2.48"
The wettest month (with the highest rainfall) is August (3.23").
The driest month (with the least rainfall) is January (1.77").
Average rainfall days in May
Port Penn, DE
- Average rainfall days in May: 16.7 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is November (8 days).
Average snowfall in May
Port Penn, DE
- Average snowfall in May: 0.12"
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
Port Penn, DE
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Port Penn, DE
- 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
Port Penn, DE
- Average sunshine days in May: 11.8 days
The month with the most sunshine days is November (20.6 days).
The months with the least sunshine days are May and July (11.8 days).
Average UV index in May
Port Penn, DE
- 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 and December (UV index 2).
Average cloud cover in May
Port Penn, DE
- Average cloud cover in May: 45
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in May
Port Penn, DE
- 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).
Port Penn, Delaware, USA
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