April weather forecastHackettstown, NJ
April
Weather in April
April in Hackettstown, New Jersey, is a mild spring month, with an average temperature varying between 57.9°F (14.4°C) and 40.1°F (4.5°C).Temperature
April indicates a change in the average high-temperature, moving up from a chilly 45.5°F (7.5°C) in March to a refreshing 57.9°F (14.4°C). During April, an average low-temperature of 40.1°F (4.5°C) is observed.Humidity
With an average relative humidity of 76%, April is the least humid month.Rainfall
In Hackettstown, during April, the rain falls for 11 days and regularly aggregates up to 0.94" (24mm) of precipitation. In Hackettstown, New Jersey, during the entire year, the rain falls for 106.9 days and collects up to 9.84" (250mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Hackettstown, in April, during 0.7 snowfall days, 0.04" (1mm) of snow is typically accumulated. In Hackettstown, during the entire year, snow falls for 21.7 days and aggregates up to 3.94" (100mm) of snow.Daylight
The average length of the day in April is 13h and 20min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:24 pm. On the last day of April, sunrise is at 5:57 am and sunset at 7:55 pm EDT.
Sunshine
In Hackettstown, the average sunshine in April is 8.1h.UV index
In April, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In April, a regular UV index of 4 translates into these guidelines:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Hackettstown, NJ
- Average high temperature in April: 57.9°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in April: 40.1°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in April
Hackettstown, NJ
- Average pressure in April: 29.98"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
Hackettstown, NJ
- Average wind speed in April: 7.7mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in April
Hackettstown, NJ
- Average humidity in April: 76%
The months with the highest relative humidity are February, October and December (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in April
Hackettstown, NJ
- Average rainfall in April: 0.94"
The wettest month (with the highest rainfall) is July (1.18").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in April
Hackettstown, NJ
- Average rainfall days in April: 11 days
The month with the highest number of rainy days is May (12.2 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in April
Hackettstown, NJ
- Average snowfall in April: 0.04"
The month with the highest snowfall is February (0.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Hackettstown, NJ
- Average snowfall days in April: 0.7 days
The month with the highest number of snowfall days is February (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Hackettstown, NJ
- Average daylight in April: 13h and 18min
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: 8h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in April
Hackettstown, NJ
- Average sunshine days in April: 16.8 days
The month with the most sunshine days is January (21.5 days).
The month with the least sunshine days is May (15.4 days).
Average UV index in April
Hackettstown, NJ
- 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
Hackettstown, NJ
- Average cloud cover in April: 47
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in April
Hackettstown, NJ
- Average visibility in April: 6mi
The months with the highest visibility are January, March, April, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August, September and October (5mi).
