Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
April brings a rise in the average high-temperature, transitioning from March's chilly 47.8°F (8.8°C) to a mild 60.6°F (15.9°C). In April, the recorded average low-temperature in Castle Shannon is a cold 41.7°F (5.4°C).Humidity
The average relative humidity in April is 75%.Rainfall
In April, in Castle Shannon, Pennsylvania, the rain falls for 16.6 days. Throughout April, 2.8" (71mm) of precipitation is accumulated. Throughout the year, in Castle Shannon, there are 164 rainfall days, and 26.89" (683mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. April is the last month it regularly snows. During 1.8 snowfall days, in April, Castle Shannon aggregates 0.28" (7mm) of snow. Throughout the year, there are 53.3 snowfall days, and 13.27" (337mm) of snow is accumulated.Daylight
The average length of the day in April in Castle Shannon, Pennsylvania, is 13h and 19min.On the first day of April, sunrise is at 7:02 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 8:14 pm EDT.
Sunshine
In April, the average sunshine is 7.5h.UV index
In April, the average daily maximum UV index in Castle Shannon is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 4 during April translates into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Frequently asked questions
What is the usual temperature for Castle Shannon in April?
What is the average humidity in April in Castle Shannon?
How much does it rain in Castle Shannon in April?
What is the last month it snows in Castle Shannon?
What is the average length of the day in April in Castle Shannon?
When is the sunrise / sunset in April in Castle Shannon?
How long on average sun shines in April in Castle Shannon?
What is the UV index reading in April in Castle Shannon?
Average temperature in April
Castle Shannon, PA
- Average high temperature in April: 60.6°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 April: 41.7°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 April
Castle Shannon, PA
- Average pressure in April: 29.97"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 April
Castle Shannon, PA
- Average wind speed in April: 7.4mph
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 April
Castle Shannon, PA
- Average humidity in April: 75%
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 April
Castle Shannon, PA
- Average rainfall in April: 2.8"
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 April
Castle Shannon, PA
- Average rainfall days in April: 16.6 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 April
Castle Shannon, PA
- Average snowfall in April: 0.28"
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 April
Castle Shannon, PA
- Average snowfall days in April: 1.8 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 April /
Average sunshine in April
Castle Shannon, PA
- Average daylight in April: 13h 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 April: 7h and 3min
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 April
Castle Shannon, PA
- Average sunshine days in April: 10.9 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 April
Castle Shannon, PA
- Average UV index in April: 4
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 April
Castle Shannon, PA
- Average cloud cover in April: 49
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 April
Castle Shannon, PA
- Average visibility in April: 6mi
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
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