April weather forecastAllentown, NJ
April
Weather in April
April is a moderate spring month in Allentown, New Jersey, with an average temperature ranging between max 60.4°F (15.8°C) and min 43.9°F (6.6°C).Temperature
April's arrival signals an increase in average high-temperatures, moving from March's frosty 48.7°F (9.3°C) to a moderate 60.4°F (15.8°C). Throughout the nights in April, Allentown experiences an average low-temperature of 43.9°F (6.6°C).Humidity
April is the least humid month, with an average relative humidity of 73%.Rainfall
In Allentown, during April, the rain falls for 14.1 days and regularly aggregates up to 2.2" (56mm) of precipitation. In Allentown, during the entire year, the rain falls for 152.9 days and collects up to 28.78" (731mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In Allentown, in April, during 0.3 snowfall days, 0.08" (2mm) of snow is typically accumulated. In Allentown, during the entire year, snow falls for 17.7 days and aggregates up to 8.43" (214mm) of snow.Daylight
In Allentown, the average length of the day in April is 13h and 18min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:23 pm. On the last day of April, sunrise is at 5:58 am and sunset at 7:52 pm EDT.
Sunshine
The average sunshine in April is 8.4h.UV index
In Allentown, the average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 4 during April leads to these advisories:
Prioritize safety - Suggestions to prevent sun damage are offered. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Allentown, NJ
- Average high temperature in April: 60.4°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in April: 43.9°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in April
Allentown, NJ
- Average pressure in April: 29.99"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
Allentown, NJ
- Average wind speed in April: 8.6mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in April
Allentown, NJ
- Average humidity in April: 73%
The month with the highest relative humidity is October (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in April
Allentown, NJ
- Average rainfall in April: 2.2"
The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in April
Allentown, NJ
- Average rainfall days in April: 14.1 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in April
Allentown, NJ
- Average snowfall in April: 0.08"
The month with the highest snowfall is March (3.11").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in April
Allentown, NJ
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Allentown, NJ
- Average daylight in April: 13h and 18min
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: 8h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in April
Allentown, NJ
- Average sunshine days in April: 14.3 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11 days).
Average UV index in April
Allentown, NJ
- Average UV index in April: 4
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Allentown, NJ
- Average cloud cover in April: 44
The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in April
Allentown, NJ
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
