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 sees a rise in the average high-temperature, climbing from a frosty 46°F (7.8°C) in March to a mild 58.5°F (14.7°C). An average low-temperature of 40.5°F (4.7°C) is observed during April nights.Humidity
The months with the lowest humidity are April and July, with an average relative humidity of 76%.Rainfall
In April, the rain falls for 15.3 days. Throughout April, 2.87" (73mm) of precipitation is accumulated. In Arlington Knolls, during the entire year, the rain falls for 162.5 days and collects up to 31.69" (805mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Arlington Knolls, in April, snow falls for 0.3 days, with typically accumulated 0.2" (5mm) of snow. In Arlington Knolls, during the entire year, snow falls for 32.3 days and aggregates up to 17.24" (438mm) of snow.Daylight
In Arlington Knolls, Pennsylvania, the average length of the day in April is 13h and 19min.On the first day of April, sunrise is at 6:44 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 7:57 pm EDT.
Sunshine
In Arlington Knolls, the average sunshine in April is 7.9h.UV index
In Arlington Knolls, the average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 4 in April translates into this advice:
Prioritize safety - Recommendations to avert sunburn are shared. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Consider carefully! The reflective quality of snow can almost 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 are April temperatures?
What is the least humid month?
What is the average humidity in April?
How many days does it rain in April?
How many days does it snow in April?
What is the average length of the day in April?
What time are sunrise and sunset in April?
How long on average sun shines in April in Arlington Knolls?
How high is the UV index in April?
Average temperature in April
Arlington Knolls, PA
- Average high temperature in April: 58.5°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in April: 40.5°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in April
Arlington Knolls, PA
- Average pressure in April: 29.99"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 April
Arlington Knolls, PA
- Average wind speed in April: 7.9mph
The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in April
Arlington Knolls, PA
- Average humidity in April: 76%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall in April
Arlington Knolls, PA
- Average rainfall in April: 2.87"
The wettest month (with the highest rainfall) is July (3.19").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in April
Arlington Knolls, PA
- Average rainfall days in April: 15.3 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (9.9 days).
Average snowfall in April
Arlington Knolls, PA
- Average snowfall in April: 0.2"
The month with the highest snowfall is March (4.88").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Arlington Knolls, PA
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is February (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Arlington Knolls, 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 18min).
- Average sunshine in April: 7h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in April
Arlington Knolls, PA
- Average sunshine days in April: 12.6 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is February (11.7 days).
Average UV index in April
Arlington Knolls, PA
- Average UV index in April: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in April
Arlington Knolls, PA
- Average cloud cover in April: 47
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in April
Arlington Knolls, PA
- Average visibility in April: 6mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Arlington Knolls, Pennsylvania, USA
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