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 arrival of May brings a temperature shift, with the average high-temperature escalating from a refreshing 60.6°F (15.9°C) in April to a pleasant 72.3°F (22.4°C). In the month of May, Castle Shannon records a consistent average low-temperature of 51.4°F (10.8°C).Humidity
In Castle Shannon, the average relative humidity in May is 76%.Rainfall
The month with the most rainfall is May, when the rain falls for 18.4 days and typically aggregates up to 3.07" (78mm) of precipitation.Snowfall
In Castle Shannon, snow does not fall in May through September.Daylight
The average length of the day in May in Castle Shannon is 14h and 26min.On the first day of May, sunrise is at 6:18 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 8:43 pm EDT.
Sunshine
In May, the average sunshine in Castle Shannon is 8.8h.UV index
In Castle Shannon, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 5 in May translates into this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Frequently asked questions
What is the temperature in May in Castle Shannon?
What is the average humidity in May in Castle Shannon?
What is the rainiest month in Castle Shannon?
How much does it rain in Castle Shannon in May?
When it does not snow in Castle Shannon?
Does it snow in Castle Shannon in May?
How many hours of daylight does Castle Shannon have in May?
What time are sunrise and sunset in May in Castle Shannon?
How many hours of sunshine does Castle Shannon have in May?
What is the UV index reading in May in Castle Shannon?
Average temperature in May
Castle Shannon, PA
- Average high temperature in May: 72.3°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in May: 51.4°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in May
Castle Shannon, PA
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Castle Shannon, PA
- Average wind speed in May: 6mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in May
Castle Shannon, PA
- Average humidity in May: 76%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (73%).
Average rainfall in May
Castle Shannon, PA
- Average rainfall in May: 3.07"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is November (1.61").
Average rainfall days in May
Castle Shannon, PA
- Average rainfall days in May: 18.4 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is January (8.5 days).
Average snowfall in May
Castle Shannon, PA
- Average snowfall in May: 0"
The month with the highest snowfall is January (3.46").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Castle Shannon, PA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Castle Shannon, 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 5min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in May
Castle Shannon, PA
- Average sunshine days in May: 10.8 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is February (9.5 days).
Average UV index in May
Castle Shannon, PA
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Castle Shannon, PA
- Average cloud cover in May: 45
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in May
Castle Shannon, PA
- Average visibility in May: 5mi
The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).
Castle Shannon, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location
