April weather forecastSouth River, NJ
April
Weather in April
April is a moderate spring month in South River, New Jersey, with an average temperature fluctuating between 44.2°F (6.8°C) and 59°F (15°C).Temperature
The arrival of April brings a change in South River's weather, with average high-temperatures moving from March's frosty 47.3°F (8.5°C) to a moderate 59°F (15°C). During April, South River observes a consistent average nighttime temperature of 44.2°F (6.8°C).Humidity
April and August, with an average relative humidity of 73%, are the least humid months.Rainfall
In South River, in April, during 14.3 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. Throughout the year, there are 154 rainfall days, and 30.75" (781mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. April is the last month it regularly snows. During 0.2 snowfall days, in April, South River aggregates 0.12" (3mm) of snow. In South River, New Jersey, during the entire year, snow falls for 18.1 days and aggregates up to 8.35" (212mm) of snow.Daylight
The average length of the day in April in South River is 13h and 19min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:22 pm. On the last day of April, sunrise is at 5:56 am and sunset at 7:52 pm EDT.
Sunshine
In South River, the average sunshine in April is 8.4h.UV index
In South River, 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 ordinary individuals.Note: In April, the maximum UV index of 4 suggests these recommendations:
Make use of precautions - It is urged to ward off sun damage. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
South River, NJ
- Average high temperature in April: 59°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in April: 44.2°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in April
South River, 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
South River, NJ
- Average wind speed in April: 9.1mph
The windiest months (with the highest average wind speed) are January and March (9.6mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).
Average humidity in April
South River, NJ
- Average humidity in April: 73%
The months with the highest relative humidity are February, May, October and December (77%).
The months with the lowest relative humidity are April and August (73%).
Average rainfall in April
South River, NJ
- Average rainfall in April: 2.36"
The wettest month (with the highest rainfall) is July (3.58").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in April
South River, NJ
- Average rainfall days in April: 14.3 days
The month with the highest number of rainy days is July (17.4 days).
The months with the least rainy days are January and November (8.5 days).
Average snowfall in April
South River, NJ
- Average snowfall in April: 0.12"
The month with the highest snowfall is March (3.82").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
South River, NJ
- Average snowfall days in April: 0.2 days
The month with the highest number of snowfall days is February (5.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
South River, 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 18min).
- 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 42min).
Average sunshine days in April
South River, NJ
- Average sunshine days in April: 14.1 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is July (10.5 days).
Average UV index in April
South River, 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, March, November and December (UV index 2).
Average cloud cover in April
South River, NJ
- Average cloud cover in April: 45
The months with the most cloud cover are February and December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 31).
Average visibility in April
South River, 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).
