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's arrival in Allentown coincides with a rise in the average high-temperature, moving from March's chilly 45.9°F (7.7°C) to a mild 58.3°F (14.6°C). Throughout the month of April, Allentown expects an average low of 40.5°F (4.7°C).Humidity
April and July, with an average relative humidity of 76%, are the least humid months.Rainfall
In Allentown, during April, the rain falls for 14.9 days and regularly aggregates up to 2.44" (62mm) of precipitation. Throughout the year, there are 145.1 rainfall days, and 27.24" (692mm) of precipitation is accumulated.Snowfall
Months with snowfall in Allentown are January through May, October through December. In Allentown, in April, snow falls for 0.3 days, with typically accumulated 0.2" (5mm) of snow. In Allentown, during the entire year, snow falls for 20.4 days and aggregates up to 13.82" (351mm) of snow.Daylight
In April, the average length of the day is 13h and 19min.On the first day of the month, sunrise is at 6:44 am and sunset at 7:27 pm. On the last day of April, in Allentown, Pennsylvania, sunrise is at 6:00 am and sunset at 7:57 pm EDT.
Sunshine
In April, the average sunshine in Allentown is 7.9h.UV index
In Allentown, the average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 4 during April translates into the following directions:
Heed the precautions - Suggestions to avoid sunburn are made. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
What is the average April temperature in Allentown?
What is the least humid month in Allentown?
What is the average humidity in April in Allentown?
How much does it rain in Allentown in April?
How much does it snow in Allentown in April?
How many hours of daylight does Allentown have in April?
When are sunrise and sunset in April in Allentown?
How many hours of sunshine does Allentown have in April?
How high is the UV index in April in Allentown?
Average temperature in April
Allentown, PA
- Average high temperature in April: 58.3°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 (34°F).
- Average low temperature in April: 40.5°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in April
Allentown, 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
Allentown, PA
- Average wind speed in April: 7.9mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in April
Allentown, PA
- Average humidity in April: 76%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall in April
Allentown, PA
- Average rainfall in April: 2.44"
The wettest month (with the highest rainfall) is July (3.03").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in April
Allentown, PA
- Average rainfall days in April: 14.9 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in April
Allentown, PA
- Average snowfall in April: 0.2"
The month with the highest snowfall is March (4.37").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Allentown, PA
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is February (6.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Allentown, 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 24min).
Average sunshine days in April
Allentown, PA
- Average sunshine days in April: 13.4 days
The month with the most sunshine days is January (20.5 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in April
Allentown, 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
Allentown, 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 34).
Average visibility in April
Allentown, PA
- Average visibility in April: 6mi
The months with the highest visibility are April, July and November (6mi).
The months with the lowest visibility are January, February, March, May, June, August, September, October and December (5mi).
Allentown, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location
