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 signals a shift in the average high-temperature, moving from March's chilly 44.6°F (7°C) to a mild 57.2°F (14°C). Nighttime temperature experiences an average drop to a wintry 39°F (3.9°C) in April.Humidity
April is the least humid month, with an average relative humidity of 77%.Rainfall
In East William Penn, during April, the rain falls for 17.4 days and regularly aggregates up to 3.23" (82mm) of precipitation. Throughout the year, there are 171 rainfall days, and 34.25" (870mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In East William Penn, Pennsylvania, during April, snow falls for 1.8 days and regularly aggregates up to 0.43" (11mm) of snow. Throughout the year, there are 48.5 snowfall days, and 27.72" (704mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 20min.On the first day of April, sunrise is at 6:46 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 8:00 pm EDT.
Sunshine
The average sunshine in April is 7.9h.UV index
The average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: During April, 3 as the daily maximum UV index converts into the following advice:
Take precautions - Protection against sunburn is recommended. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. During bright days, sunglasses that offer UVA and UVB defense are recommended. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature?
What is the least humid month?
What is the average humidity in April?
How much does it rain in April?
How much does it snow in April?
How many hours of daylight does East William Penn have in April?
When is the sunrise / sunset in April in East William Penn?
How many hours of sunshine does East William Penn have in April?
How high is the UV index in April?
Average temperature in April
East William Penn, PA
- Average high temperature in April: 57.2°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.8°F).
- Average low temperature in April: 39°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure in April
East William Penn, PA
- Average pressure in April: 29.98"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in April
East William Penn, PA
- Average wind speed in April: 8.2mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in April
East William Penn, PA
- Average humidity in April: 77%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (77%).
Average rainfall in April
East William Penn, PA
- Average rainfall in April: 3.23"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in April
East William Penn, PA
- Average rainfall days in April: 17.4 days
The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is January (9.7 days).
Average snowfall in April
East William Penn, PA
- Average snowfall in April: 0.43"
The month with the highest snowfall is January (7.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
East William Penn, PA
- Average snowfall days in April: 1.8 days
The month with the highest number of snowfall days is January (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
East William Penn, PA
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in April: 7h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 18min).
Average sunshine days in April
East William Penn, PA
- Average sunshine days in April: 10.5 days
The month with the most sunshine days is November (15.8 days).
The month with the least sunshine days is May (9.1 days).
Average UV index in April
East William Penn, PA
- Average UV index in April: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in April
East William Penn, PA
- Average cloud cover in April: 48
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in April
East William Penn, PA
- Average visibility in April: 6mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
East William Penn, Pennsylvania, USA
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