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, Cornwell's average high-temperature sees a rise, moving from April's comfortable 61.7°F (16.5°C) to a pleasant 71.8°F (22.1°C). Cornwell records a consistent low-temperature of 54.5°F (12.5°C) during May nights.Humidity
The average relative humidity in May in Cornwell is 75%.Rainfall
In Cornwell, in May, during 17.3 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. In Cornwell, during the entire year, the rain falls for 153.8 days and collects up to 30.94" (786mm) of precipitation.Snowfall
Months with snowfall in Cornwell, Pennsylvania, are January through May, November and December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Cornwell aggregates 0.2" (5mm) of snow. In Cornwell, during the entire year, snow falls for 16.8 days and aggregates up to 8.5" (216mm) of snow.Daylight
In May, the average length of the day is 14h and 25min.On the first day of the month, sunrise is at 5:58 am and sunset at 7:55 pm. On the last day of May, sunrise is at 5:32 am and sunset at 8:22 pm EDT.
Sunshine
The average sunshine in May in Cornwell is 8.4h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Cornwell. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.Note: An average UV index of 6 in May transforms into this advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Cornwell in May?
What is the average humidity in May in Cornwell?
How many days does it rain in May in Cornwell?
What is the last month it snows in Cornwell?
How many hours of daylight does Cornwell have in May?
When is the sunrise / sunset in May in Cornwell?
How long on average sun shines in May in Cornwell?
What is the month with the highest UV index in Cornwell?
How high is the UV index in May in Cornwell?
Average temperature in May
Cornwell, PA
- Average high temperature in May: 71.8°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in May: 54.5°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in May
Cornwell, 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 (29.93"Hg).
Average wind speed in May
Cornwell, PA
- Average wind speed in May: 6.8mph
The windiest months (with the highest average wind speed) are March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in May
Cornwell, PA
- Average humidity in May: 75%
The months with the highest relative humidity are February and October (77%).
The months with the lowest relative humidity are April, July and August (71%).
Average rainfall in May
Cornwell, PA
- Average rainfall in May: 2.8"
The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days in May
Cornwell, PA
- Average rainfall days in May: 17.3 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in May
Cornwell, PA
- Average snowfall in May: 0.2"
The month with the highest snowfall is March (2.76").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Cornwell, PA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (5.2 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
Cornwell, PA
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in May
Cornwell, PA
- Average sunshine days in May: 11.9 days
The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is July (10.4 days).
Average UV index in May
Cornwell, 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, March, November and December (UV index 2).
Average cloud cover in May
Cornwell, PA
- Average cloud cover in May: 47
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in May
Cornwell, PA
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Cornwell, Pennsylvania, USA
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